What's New in Cardiac MRI? — July 23, 2026
AI-summarised digest of 45 PubMed articles on Cardiac MRI published in the last 7 days.
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What’s New in Cardiac MRI?
July 23, 2026 · 45 articles · 15 research themes · covering July 16, 2026 – July 23, 2026
Overview
Across this week’s set, a dominant thread is the push toward mechanism-based cardiovascular risk stratification using advanced imaging. Multiple studies connect cardiac MRI-derived phenotypes—such as biological “heart age” from CMR radiomics/ECG features, left atrial strain and right atrioventricular coupling indices, and stress perfusion + LGE patterns—to prognosis and clinical decision-making. In parallel, HFpEF-focused work emphasizes that HFpEF pathophysiology is broader than isolated diastolic dysfunction, and mechanistic links (e.g., coronary microvascular dysfunction to impaired LV relaxation and elevated LVEDP) are being used to refine how patients are categorized and risk-ranked.
A second major theme is improved detection of transient or confounded cardiac events—especially arrhythmias and conduction-related risk. Reviews and case-based reports highlight gaps in standard monitoring (e.g., paroxysmal events in Anderson–Fabry disease), the diagnostic value of CMR when coronary disease is excluded (pediatric Takotsubo), and the importance of considering conduction abnormalities (LBBB) and phenocopies (e.g., pre-excitation patterns in evolving HCM, metabolic cardiomyopathy mimicking HCM/Brugada). Complementing this, several studies evaluate how new quantitative markers (RA strain in ARVC, ML-enhanced prediction in HCM, and CMR/CT strain agreement in myocarditis) can reduce missed diagnoses or improve confidence in imaging-derived metrics.
Finally, the digest shows rapid methodological progress in cardiac imaging—particularly AI/physics-informed reconstruction, segmentation, and motion tracking for CMR, plus expanding hemodynamic capabilities (4D flow, vascular shear stress, and reservoir–flow coupling). These advances are paired with translational workflow innovations, including in-scanner ECG during stress CMR and early clinical experience with MRI-guided ablation. Outside cardiology, the inclusion of public health mortality trend analyses and an environmental sediment baseline study underscores how cardiovascular outcomes and risk factors are being studied both clinically and at the population level.
HFpEF, Diastolic Dysfunction & Heart Failure Mechanisms
Clinical phenotype and outcomes of low-risk HCM patients who maintained stable exercise habits during follow-up.
This study assessed clinical phenotype and outcomes in low-risk hypertrophic cardiomyopathy (HCM) patients who maintained stable exercise habits during follow-up, comparing sedentary, mild, and vigorous exercise groups. The key finding was that reliably documented, stable exercise participation identified a subgroup with a more favorable clinical profile and informs outcome comparisons across activity levels. These results help refine risk stratification and counseling for low-risk HCM patients regarding long-term exercise engagement.
Pelliccia A, Ferrera A, Daniello CD et al. · International journal of cardiology · (2026) · View on PubMed ↗
Understanding HFpEF Through Imaging: Strengths, Limitations, and Current State of the Art.
This JACC Cardiovascular Imaging State-of-the-Art review summarized current imaging approaches to understand and diagnose heart failure with preserved ejection fraction (HFpEF), emphasizing how echocardiography and other noninvasive modalities relate to invasive hemodynamics. The key finding was that HFpEF pathophysiology extends beyond isolated diastolic dysfunction and that multimodality imaging is needed to capture the broader mechanisms driving exertional and resting congestion. This is significant because it guides clinicians toward more sensitive, mechanism-based imaging strategies for HFpEF evaluation.
Harada T, Naser JA, Ghanbari F et al. · JACC. Cardiovascular imaging · (2026) · View on PubMed ↗
Left ventricular end-diastolic pressure in women with ischemia and no obstructive coronary artery disease: The women’s ischemia syndrome evaluation - Coronary microvascular dysfunction study (WISE-CVD).
This study evaluated 253 women with ischemia and no obstructive coronary artery disease (INOCA) using invasive coronary functional testing to measure resting left ventricular end-diastolic pressure (LVEDP) and coronary microvascular dysfunction, with a predefined subset undergoing cardiac MRI (CMRI). Coronary microvascular dysfunction was associated with impaired LV relaxation, which the authors propose as a mechanism contributing to elevated LVEDP. These findings support a CMD–HFpEF pathophysiology link and suggest that invasive hemodynamic assessment and CMRI may help refine risk stratification in women with INOCA.
Ranasinghe S, Tjoe B, Chang J et al. · International journal of cardiology · (2026) · View on PubMed ↗ · Free PDF ↗
Cardiomyopathy Genetics & Rare Disease Phenotypes
Phenotypic Expansion of GYG1-Related Disease Presenting as Hypertrophic Cardiomyopathy With Brugada Phenocopy.
A 31-year-old man with glycogen storage disease type XV (GSD-XV) due to biallelic pathogenic variants in GYG1 was evaluated for cardiac involvement that mimicked hypertrophic cardiomyopathy and Brugada syndrome. Key findings included a spontaneous Type-1 Brugada ECG pattern with complete right bundle branch block, nonobstructive LV hypertrophy with preserved ejection fraction, and speckle-tracking evidence of markedly reduced global longitudinal strain with heterogeneous distribution. Clinically, this expands the phenotypic spectrum of GYG1-related disease and highlights that Brugada phenocopy and cardiomyopathy can be part of ultra-rare metabolic cardiomyopathy.
Arat N, Cetincelik U, Gülten ZA et al. · American journal of medical genetics. Part A · (2026) · View on PubMed ↗
A Slc5a6-deficient mouse model reveals metabolically driven cardiomyopathy with therapeutic potential for vitamin-based intervention.
This study investigated the role of the sodium-dependent multivitamin transporter encoded by SLC5A6 in cardiomyopathy by generating a cardiac-specific Slc5a6 knockout (Slc5a6cKO) mouse model and testing vitamin supplementation. The key finding was that Slc5a6cKO mice developed progressive metabolically driven dilated cardiomyopathy with impaired coenzyme A synthesis and premature death, and that vitamin-based intervention had therapeutic potential. Scientifically, it links SLC5A6-dependent biotin/pantothenic acid uptake to energy metabolism failure in DCM and suggests a targeted nutritional strategy for related cardiomyopathies.
Fullerton MO, Phillips LC, Redgrave RE et al. · JCI insight · (2026) · View on PubMed ↗ · Free PDF ↗
Myocardial fat fraction in Becker muscular dystrophy and women carrying pathogenic DMD gene variants assessed by Dixon cardiac MRI.
This cross-sectional study used Dixon cardiac MRI to quantify myocardial fat fraction (FF) in 20 patients with Becker muscular dystrophy (BMD) and in women carrying pathogenic DMD gene variants, and then related FF to left ventricular ejection fraction (LVEF), age, and skeletal muscle FF. The key aim was to determine whether myocardial fatty replacement parallels skeletal muscle disease progression in dystrophinopathies. The findings are significant for understanding cardiac involvement in DMD-spectrum disease and for using Dixon CMR myocardial FF as a potential biomarker of cardiac pathology.
Lyu Z, Teitsdóttir B, Joensen H et al. · Journal of neuromuscular diseases · (2026) · View on PubMed ↗ · Free PDF ↗
Pleiotropic Phenotype of RYR2 Exon 3 Deletion: Biventricular Noncompaction and Malignant Arrhythmias.
This case report described a 33-year-old woman with an RYR2 exon 3 deletion (E3DS) presenting with pregnancy-associated premature ventricular contractions and later developing biventricular noncompaction and malignant arrhythmias. The key findings included sinus node dysfunction, nonsustained polymorphic ventricular tachycardia, postpartum persistent bradyarrhythmia, complete supranodal atrioventricular block, extensive right atrial low-voltage on electrophysiology, and confirmation of biventricular noncompaction on cardiac MRI. The report highlights that RYR2 exon 3 deletion can produce a combined structural cardiomyopathy–arrhythmia phenotype, emphasizing the need for early cardiac imaging and rhythm evaluation in ryanodinopathy.
Faucher L, Cardi T, Fitouchi S et al. · JACC. Case reports · (2026) · View on PubMed ↗ · Free PDF ↗
Arrhythmia Risk, Sudden Cardiac Death & Monitoring
Atypical Pediatric Presentation of Takotsubo Syndrome.
This JACC Case Reports article describes a 17-year-old boy with atypical pediatric Takotsubo syndrome triggered by emotional distress and exertion. The key findings were ST-segment elevation, markedly elevated troponin, apical wall motion abnormalities, normal coronary angiography, and cardiac MRI demonstrating apical hypokinesis with myocardial edema and late gadolinium enhancement, alongside severe hyperglycemia consistent with new-onset type 2 diabetes. The case is significant because it broadens recognized pediatric TS triggers and highlights the diagnostic role of CMR when coronary disease is excluded.
Kash B, Nguyen A, Robinson J et al. · JACC. Case reports · (2026) · View on PubMed ↗
Incremental Diagnostic Value of Right Atrial Strain in Arrhythmogenic Right Ventricular Cardiomyopathy: A Cardiac MRI Study.
This cardiac MRI study evaluated right atrial (RA) phasic strain as an incremental diagnostic marker in arrhythmogenic right ventricular cardiomyopathy (ARVC) among 38 ARVC patients with preserved RV function, 38 with reduced RV function, and 38 healthy controls. The key finding was that even when RV function was preserved, ARVC patients showed impaired RA reservoir and conduit strain and reduced RA passive emptying fraction compared with controls. Clinically, this supports adding RA strain metrics to improve detection and risk stratification in ARVC before overt RV dysfunction.
Xu W, Zhao J, Song Y et al. · Academic radiology · (2026) · View on PubMed ↗
Machine learning algorithms for predicting arrhythmic events in Hypertrophic Cardiomyopathy: limited enhancement beyond late gadolinium enhancement.
This study developed and tested a machine learning model using clinical, echocardiographic, and cardiac MRI variables—including late gadolinium enhancement (LGE) quantified by the +6 SD method—to predict arrhythmic events in 531 hypertrophic cardiomyopathy (HCM) patients from an international multicenter registry. The model’s performance showed limited incremental enhancement beyond LGE for predicting a composite endpoint of sudden cardiac death, aborted sudden cardiac death, and sustained ventricular tachycardia. Clinically, this suggests that in HCM risk stratification, conventional LGE-based metrics may remain difficult to outperform with additional ML features alone.
Certo Pereira J, Amador R, Vieira A et al. · The international journal of cardiovascular imaging · (2026) · View on PubMed ↗
Diagnostic Approach to Cardiac Sarcoidosis.
This review article synthesized current evidence and consensus guidance on diagnosing cardiac sarcoidosis, emphasizing that no single test achieves both high sensitivity and specificity. It highlights how different major consensus documents use varying diagnostic thresholds and can produce discordant diagnoses for the same patient, despite the condition’s high risk of arrhythmias, heart failure, and sudden cardiac death. Scientifically and clinically, it underscores the need for a multimodality diagnostic approach and careful interpretation of guideline-specific criteria.
Lehtonen J, Birnie DH · Circulation · (2026) · View on PubMed ↗
The Innocent Delta Wave in Progressive Cardiomyopathy - Culprit vs Bystander.
This case report describes a 34-year-old man with recurrent palpitations and dyspnea who developed an acute ischemic stroke, with ECG showing atrial fibrillation and echocardiography demonstrating an HCM phenotype with moderate LV systolic dysfunction. The authors highlight the presence of a short PR interval with ventricular pre-excitation after cardioversion and a family history of HCM with high-grade conduction disease requiring pacemaker implantation. The report is significant as it illustrates how an “innocent delta wave” may be a bystander finding in progressive cardiomyopathy rather than the primary driver of risk, informing interpretation of pre-excitation patterns in HCM.
Ansari AG, Shanmugam S, Vijay J et al. · The American journal of cardiology · (2026) · View on PubMed ↗
Exercise-Provoked Wide-Complex Tachycardia and Extreme Duke Score: Orthodromic Reciprocating Tachycardia Unmasked by Electrophysiology Study.
This JACC Case Reports report describes a 44-year-old man whose exercise-provoked wide-complex tachycardia with left bundle branch block morphology was initially concerning for ventricular tachycardia but was ultimately unmasked as orthodromic reciprocating tachycardia. The key finding was that electrophysiology study identified a concealed left posterior accessory pathway as the mechanism, despite negative angiography and cardiac MRI for obstructive/structural disease. This is important because it highlights how stress-test ECG features and scoring (e.g., extreme Duke treadmill score) can mimic VT and underscores the role of electrophysiology study for definitive diagnosis.
Ray N, Petty A, Money D et al. · JACC. Case reports · (2026) · View on PubMed ↗ · Free PDF ↗
Fabry disease cardiomyopathy: Time for a closer heart rhythm monitoring?
This narrative review examined arrhythmia risk in Anderson–Fabry disease (FD) cardiomyopathy and evaluated how well current monitoring strategies (e.g., 24-hour Holter) detect lethal paroxysmal events. The key finding is that standard intermittent monitoring tools often miss paroxysmal, asymptomatic arrhythmias, leaving a diagnostic gap in identifying patients at risk for sudden cardiac death (SCD). The review supports the need for closer heart rhythm monitoring and improved risk stratification approaches in FD to better capture transient arrhythmic triggers.
Mugnai G, Genovese D, De Michieli L et al. · Heart failure reviews · (2026) · View on PubMed ↗
Cardiac Imaging Biomarkers (CMR/CT) & Quantitative Metrics
Comparison of semi-automatic myocardial scar segmentation methods on black-blood late gadolinium enhancement images.
In 20 patients with ischemic heart disease, the study compared semi-automatic myocardial scar segmentation methods using co-registered bright-blood and black-blood late gadolinium enhancement (LGE) images (including SPOT and reference PSIR acquisitions) on a 1.5-T system. The key finding was that segmentation performance differed across semi-automatic approaches, with black-blood LGE intended to improve scar–blood interface contrast and reduce operator dependence. This is significant because it informs which semi-automatic pipeline may improve reproducibility and efficiency of scar quantification for prognosis and therapy planning.
Génisson T, Narceau K, Richard T et al. · Magnetic resonance imaging · (2026) · View on PubMed ↗
Validation of Feature-Tracking Cardiac CT for Left Ventricular Strain Assessment in Pediatric Acute Myocarditis: Comparison With Cardiac MRI.
This validation study compared feature-tracking cardiac CT (FT-CCT) with cardiac MRI (CMR) for left ventricular (LV) strain assessment in 45 children with acute myocarditis who underwent both CCTA and CMR. The key finding was that FT-CCT demonstrated excellent intermodality agreement for strain measures and assessed diagnostic performance for detecting late gadolinium enhancement (LGE), including evaluation of heart-rate effects. This is clinically important because it supports FT-CCT as a pragmatic alternative for myocardial injury/strain assessment when CMR is delayed after clinically indicated coronary CT angiography.
Yang L, Cao Y, Peng Y · Journal of computer assisted tomography · (2026) · View on PubMed ↗
Influence of left bundle branch block on left atrial strain parameters in patients with ischaemic and non-ischaemic dilated cardiomyopathy.
In a retrospective single-center analysis, the authors assessed how left bundle branch block (LBBB) affects left atrial (LA) strain parameters measured by cardiovascular MRI in four groups: controls without dilated cardiomyopathy (DCM) or LBBB, LBBB without DCM, DCM without LBBB, and DCM with LBBB. LA volumes and strain were quantified semi-automatically using cvi42® and Segment® software, and the study specifically tested whether LBBB alters LA strain metrics in ischemic and non-ischemic DCM contexts. This is significant because conduction abnormalities like LBBB may confound CMR-derived LA strain used for prognostication in DCM.
Petersen A, Kamieniarz P, Meteva D et al. · The international journal of cardiovascular imaging · (2026) · View on PubMed ↗ · Free PDF ↗
SMARCA4, STK11, and KEAP1 co-inactivation associates with poor prognosis and upregulation of the TGF-β pathway in lung adenocarcinoma.
This study analyzed co-inactivation of the chromatin remodeler SMARCA4 with STK11 and KEAP1 in lung adenocarcinoma (LUAD) and assessed associations with prognosis and TGF-β pathway activity. Co-inactivation correlated with poor clinical outcomes and was linked to upregulation of the TGF-β pathway. These findings suggest that multi-gene loss involving SMARCA4/STK11/KEAP1 defines a more aggressive LUAD biology and may identify patients who could benefit from TGF-β–pathway–targeted strategies.
Costa EA, Mello BP, Wohlhieter C et al. · Translational oncology · (2026) · View on PubMed ↗ · Free PDF ↗
Advancing Heart Ageing in Ischemic Heart Disease: Insights from CMR and ECG Analysis.
This study investigated how ischemic heart disease (IHD) relates to biological heart ageing in 2,142 prevalent IHD patients by estimating heart age using cardiac magnetic resonance (CMR) radiomics and electrocardiogram (ECG)-derived phenotypes, while accounting for conventional imaging indices and vascular risk factors. The key finding was that IHD is associated with an increased heart age gap (HAG), indicating accelerated biological heart ageing, and that conventional imaging and vascular risk factors contribute to this relationship. This supports CMR+ECG-based “biological heart age” as a noninvasive biomarker for cardiovascular ageing risk stratification in IHD.
Salih AM, Rauseo E, Galazzo IB et al. · Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · (2026) · View on PubMed ↗ · Free PDF ↗
Fully Automatic Left Atrial Strain Quantification via Multi-task Learning on Cardiac Cine MRI.
This multi-center retrospective study developed a fully automatic left atrial (LA) strain quantification method using multi-task learning directly from two-chamber and four-chamber cine cardiac MRI, using a groupwise registration network plus a segmentation network with spatiotemporal cross-attention and synergistic losses. The key finding was that the model enables reproducible, scalable LA strain measurement that performs competitively against conventional feature-tracking approaches (including optical-flow-based methods). This is clinically significant because it can reduce contouring/temporal-drift errors and improve feasibility of LA strain as a routine imaging biomarker.
Zhao Y, Chen H, Gong Y et al. · Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · (2026) · View on PubMed ↗ · Free PDF ↗
Spatial phenotyping of epicardial adipose tissue from cardiac MRI.
This study developed a deep learning framework to spatially phenotype epicardial adipose tissue (EAT) from cardiac MRI by combining automated whole-heart segmentation with spatial statistical modeling to produce chamber-resolved EAT distribution. The key finding was that an asymmetric multi-modal CNN-Transformer network can automatically segment the four chambers and EAT and then quantify EAT distribution across the heart. This is significant because it enables more precise mapping of EAT, which may improve understanding of how regional adiposity contributes to cardiovascular disease risk.
Feng F, Long T, Hasaballa AI et al. · Medical image analysis · (2026) · View on PubMed ↗
Associations of thoracic muscle area factor and visceral adiposity with cardiac function in patients with overweight or obesity.
This cross-sectional study in 154 overweight/obese patients used cardiac magnetic resonance to test independent and interactive associations between thoracic axial skeletal muscle mass (TASM) factor and visceral adiposity with cardiac function. The key finding was that higher TASM factor correlated positively with left ventricular ejection fraction (EF) and global circumferential strain (GCS), while visceral fat showed adverse associations with cardiac function measures (and the analyses supported interactive effects). This is clinically relevant because it links modifiable body-composition phenotypes (muscle and visceral fat) to CMR-measured cardiac performance and natriuretic peptide biology.
Gao L, Cheng L, Liu W et al. · Nutrition, metabolism, and cardiovascular diseases : NMCD · (2026) · View on PubMed ↗
Cardiac Imaging Methods & AI/ML Reconstruction/Segmentation
The Future of Imaging in Heart Failure: Toward Precision Phenotyping, Integration, and Intelligence.
This narrative review synthesized emerging imaging technologies for heart failure (HF) with an emphasis on precision phenotyping, integration, and intelligence rather than modality-siloed descriptive assessment. The key finding was that advances in artificial intelligence (AI) and multimodal integration are increasingly enabling automated acquisition, predictive modeling, and patient-specific characterization. This matters clinically because it frames how imaging could move toward more etiologic stratification and decision support in heterogeneous HF populations.
Hundertmark MJ · Current heart failure reports · (2026) · View on PubMed ↗
Training Deep Learning Based Dynamic MR Image Reconstruction Using Synthetic Fractals.
This work investigated training deep learning models for dynamic MRI reconstruction using synthetically generated fractal data derived from quaternion Julia fractals, compared against models trained on natural videos and cardiac MRI data. The authors trained a 3D U-Net artifact-suppression network on fractal-generated fully sampled and radially undersampled k-space pairs and evaluated it on held-out dynamic MRI data. The study supports synthetic fractal data as a privacy- and licensing-friendly way to train dynamic MRI reconstruction models that can generalize to real imaging tasks.
Raman A, Jaubert O, Wrobel M et al. · Magnetic resonance in medicine · (2026) · View on PubMed ↗ · Free PDF ↗
Cardiac motion tracking with bidirectional latent neural ODEs from cine cardiac MRI.
This study developed an unsupervised cardiac motion tracking framework for cine cardiac MRI using bidirectional latent neural ordinary differential equations (latent neural ODEs). By evolving motion-sensitive features in a continuous-time latent space, the method aimed to reduce accumulated temporal errors and improve physical consistency compared with discrete-time learning approaches. Scientifically and clinically, continuous-time latent ODE tracking could improve reliability of cine-MRI–derived motion metrics used for functional assessment and disease analysis.
Ruan D, Zhou K, Zhu C et al. · Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society · (2026) · View on PubMed ↗
Integrating physics guidance into deep learning for cine cardiovascular segmentation.
This study proposed PGE-UNet, a cine cardiovascular magnetic resonance (CMR) segmentation framework that integrates radiofrequency-related physics guidance into a deep learning model. The key finding is that adding explicit physics constraints improved physically plausible segmentation outputs under realistic acquisition variability while maintaining efficient performance for ventricular quantification tasks. This approach could enhance robustness and clinical trustworthiness of automated cine CMR segmentation for deriving volumes and ejection fraction.
Tran-Nguyen MA, Luong QK, Kha MB et al. · Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society · (2026) · View on PubMed ↗
Cardiac MRI Reconstruction Using Diffusion Priors and Multi-Scale Transformer-Based Feature Modeling.
This paper studied a diffusion-based multi-scale feature fusion transformer (DMFT) for cardiac MRI reconstruction, focusing on improving undersampled reconstruction quality relative to prior transformer-based approaches. The key contribution is a diffusion prior combined with multi-scale transformer feature modeling to better recover high-frequency details and produce more consistent structures under undersampling. Clinically, this could improve the reliability and interpretability of cardiac MRI reconstructions in real-world, time- and dose-constrained imaging workflows.
Lyu J, Zhao B, Al-Hazzaa SAF et al. · IEEE journal of biomedical and health informatics · (2026) · View on PubMed ↗
Cardiac MRI Hemodynamics & Flow (4D flow, WSS, Coupling)
Identifying abnormal patterns of wall shear stress in mild-to-moderate aortic dilation and tricuspid valves using permutation tests.
This study applied permutation testing to identify abnormal regional patterns of aortic wall shear stress (WSS) derived from 4D flow MRI in 46 patients with mild-to-moderate ascending aortic dilation with tricuspid valves versus age- and sex-matched controls. By using permutation tests, the authors addressed the multiple-comparisons problem inherent in patch-wise WSS mapping. The approach is significant because it improves statistical rigor when detecting localized hemodynamic differences that may relate to disease progression.
Trenti C, Boito D, Hammaréus F et al. · Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · (2026) · View on PubMed ↗ · Free PDF ↗
Cardiovascular 4D Flow MRI for multidirectional hemodynamic assessment: a single-centre observational study.
This single-center observational study assessed feasibility and clinical utility of cardiovascular 4D flow MRI for multidirectional hemodynamic visualization and quantification in 30 cardiovascular MRI cases acquired on a Siemens MAGNETOM Skyra 3.0T system. The key finding was that time-resolved, velocity-encoded 4D flow MRI with retrospective ECG gating and respiratory compensation enables quantitative assessment of complex, multidirectional flow patterns. This supports 4D flow CMR as a practical tool for hemodynamic characterization that may enhance diagnosis and management planning.
Ye Y, Zeng T, Chen Y et al. · Biomedizinische Technik. Biomedical engineering · (2026) · View on PubMed ↗ · Free PDF ↗
Feasibility of early detection of left ventricular diastolic dysfunction in hypertensive patients using four-dimensional flow cardiac magnetic resonance.
This retrospective study evaluated whether early left ventricular diastolic dysfunction (LVDD) in 66 hypertensive patients—stratified by left ventricular hypertrophy (LVH) and LVDD status defined by multiparametric echocardiography (E/e’, E/A, and LA diameter)—can be detected using four-dimensional flow cardiac magnetic resonance (4D flow CMR). The key finding was that 4D flow-derived left ventricular kinetic energy (KE) parameters differ in ways that distinguish early LVDD phenotypes in hypertension, including in subgroups with or without LVH. This is clinically important because it suggests 4D flow CMR may detect diastolic impairment earlier than conventional measures.
Peng K, Zhao J, Wang Z et al. · European journal of radiology · (2026) · View on PubMed ↗
Impact of transcatheter aortic valve replacement on blood flow in the ascending aorta and brachiocephalic artery.
This prospective study evaluated how transcatheter aortic valve replacement (TAVR) changes blood flow in the ascending aorta (AAo) and brachiocephalic artery (BCA) using 4D flow cardiovascular magnetic resonance before and after TAVR in patients with aortic stenosis. The key finding was that post-TAVR flow rate increases in these vessels depend on the pre-TAVR flow rate, indicating a patient-specific hemodynamic response. This is clinically significant because it may help predict vascular flow improvement after TAVR and refine post-procedural risk assessment for cerebral perfusion-related outcomes.
Yamasaki K, Tsuneta S, Kanaya M et al. · Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · (2026) · View on PubMed ↗ · Free PDF ↗
Valvular Heart Disease Imaging & Quantification
RACI: A Novel Prognostic Marker in Functional Tricuspid Regurgitation.
This study evaluated the prognostic value of the right atrioventricular coupling index (RACI)—the ratio of right atrial (RA) volume to right ventricular end-diastolic volume on cardiac MRI—in 633 patients with moderate-or-greater functional tricuspid regurgitation (TR). Patients were stratified by an optimal Youden-index cutoff (RACI <0.62 vs ≥0.62), and the primary outcome was all-cause mortality. The results indicate that a higher RACI identifies patients at increased mortality risk, potentially adding a new CMR-derived marker for functional TR prognosis.
Zhang RS, Falco G, Li E et al. · Circulation. Cardiovascular imaging · (2026) · View on PubMed ↗
Quantification of Single Valve Regurgitation in the Pediatric Population Using 3-Dimensional Echocardiography: Reproducibility and Comparison with Cardiac Magnetic Resonance Imaging.
This study evaluated whether three-dimensional echocardiography (3DE) can quantify single-valve regurgitation fraction (RF) in pediatric patients (<18 years) with mild regurgitation of one valve, using cardiac magnetic resonance imaging (CMR) as the reference standard. 3DE measurements showed reproducibility and agreement with CMR-based RF quantification for pediatric single-valve regurgitation. Clinically, this supports 3DE as a practical alternative to CMR for follow-up quantification of regurgitation in children, potentially reducing the need for CMR.
Kuebler JD, Moleon-Shea M, Lu M et al. · Pediatric cardiology · (2026) · View on PubMed ↗
Ischemia, Coronary Microvascular Dysfunction & Prognosis
Stress CMR ischemic burden and long-term mortality in left ventricular systolic dysfunction: a multicenter registry study.
This multicenter registry study examined whether stress perfusion CMR ischemic burden and late gadolinium enhancement (LGE) provide incremental prognostic value for all-cause mortality in patients with left ventricular systolic dysfunction (LVEF <50%). Using vasodilator stress perfusion CMR data from consecutive patients at three French centers (2008–2024), the authors modeled associations with Cox regression and evaluated incremental value beyond clinical factors and LVEF. The findings support the use of stress CMR tissue/ischemia characterization to refine long-term risk stratification in LV systolic dysfunction.
Pfeffer A, Garot J, Duhamel S et al. · European heart journal. Cardiovascular Imaging · (2026) · View on PubMed ↗
Stress Testing & In-Scanner/Physiology-Integrated Imaging
Feasibility of 12-lead ECG reconstruction at rest and during adenosine stress perfusion inside a 3-Tesla MR scanner.
This feasibility study evaluated whether 12-lead electrocardiograms (ECGs) can be reconstructed inside a 3-T MRI scanner at rest and during adenosine stress perfusion using an MR-compatible electrode patch setup plus artifact-removal post-processing. In-bore ECGs were recorded prior to and during adenosine infusion and compared against reference 12-lead ECGs recorded outside the MR environment to assess reconstruction accuracy. Scientifically, it supports the feasibility of measuring ECG intervals and ischemia-related ST/T changes during vasodilator stress CMR without ionizing radiation.
Falconer D, Mehri M, Bhiri M et al. · The international journal of cardiovascular imaging · (2026) · View on PubMed ↗ · Free PDF ↗
Inflammatory/Drug-Induced Myocarditis & Diagnostic Challenges
Mesalazine-Induced Myocarditis: A Challenging Diagnostic Journey.
This clinical case report described mesalazine-induced myocarditis, emphasizing diagnostic considerations in patients who develop acute chest pain and elevated cardiac biomarkers shortly after starting mesalazine. Cardiac MRI was highlighted as pivotal for diagnosis, and prompt discontinuation of mesalazine led to rapid clinical recovery. The report underscores the need for early recognition of drug-induced myocarditis to prevent progression to severe complications.
Bouayed MZ, Benaini I, Koulali H et al. · Clinical case reports · (2026) · View on PubMed ↗ · Free PDF ↗
[Diagnostic and therapeutic challenges in pediatric takotsubo syndrome: a case report].
This case report describes a 15-year-old adolescent with Barlow syndrome and severe mitral regurgitation who underwent mechanical mitral valve replacement and was later found to have findings suggestive of endocarditis. The key clinical challenge highlighted is differentiating pediatric takotsubo syndrome from other causes of acute hemodynamic deterioration in the postoperative setting, particularly when endocarditis is suspected. The report underscores the need for heightened diagnostic awareness and careful differential diagnosis when transient cardiomyopathy mimics postoperative cardiac complications in children.
Maza-Caneva OC, Villa-Vargas RA, Restrepo-Hincapié AC et al. · Archivos de cardiologia de Mexico · (2026) · View on PubMed ↗ · Free PDF ↗
Ablation & Interventional Cardiac MRI (iCMR)
Interventional Cardiac Magnetic Resonance-Guided Flutter Ablation: Technical Evolution and Procedural Insights from Early Clinical Use.
This report described early clinical experience with interventional cardiac MRI (iCMR)-guided cavotricuspid isthmus (CTI) ablation, analyzing 35 consecutive patients treated between September 2022 and February 2025. Procedures were performed on a 1.5T MRI scanner with an active catheter system, focusing on feasibility, procedural efficiency, and clinical outcomes for typical atrial flutter ablation. Clinically, it supports the technical evolution of radiation-free CTI ablation using real-time soft-tissue visualization in the MRI environment.
Hopman LHGA, Mahmoodi S, van Luijk RD et al. · Heart rhythm · (2026) · View on PubMed ↗ · Free PDF ↗
Aortic Remodeling & Vascular Physiology
Phase-contrast cardiac MRI assessment of aortic reservoir-flow coupling across adult age groups.
This single-center observational study used 3.0-T phase-contrast cardiac MRI to quantify aortic reservoir–flow coupling in 252 adults stratified into younger (18–33 years), middle-aged (34–60 years), and older (>60 years) groups. The study found age-related differences in how aortic reservoir function couples with stroke-volume input and regional flow organization, indicating that diameter-only assessment misses important remodeling–flow interactions. These findings support more physiologically grounded, MRI-based phenotyping of thoracic aortic remodeling across the adult lifespan for improved risk stratification.
Lv J, Ye Y, Zeng T et al. · Biomedizinische Technik. Biomedical engineering · (2026) · View on PubMed ↗
Congenital/Pediatric/CHD Care & Screening
SCMR Survey of Centers Performing CMR in Pediatric/Congenital Heart Disease: 2024 Update.
This SCMR international survey assessed practice trends for cardiovascular magnetic resonance (CMR) in pediatric and congenital heart disease across 124 responding centers in 2024 (with prior comparisons to 2014 and 2018). The key finding was an increase in the number of participating centers over time, reflecting expanding CMR availability and evolving practice patterns. Scientifically and operationally, the update helps benchmark service capacity and guides future standardization and resource planning for pediatric/CHD CMR.
Buddhe S, Soriano BD, Wilson HC et al. · Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · (2026) · View on PubMed ↗
Clinical spectrum and ascertainment pathways in pediatric female dystrophinopathy.
This single-center retrospective case series characterized the clinical spectrum and ascertainment pathways of pediatric female dystrophinopathy in 35 girls with genetically confirmed DMD gene variants. The study documented how presentations ranged from asymptomatic at evaluation to skeletal muscle and cardiac involvement, and it analyzed inheritance patterns and subclinical muscle findings alongside how patients were identified (symptom-driven vs other routes). These data improve recognition of subtle childhood dystrophinopathy in girls and inform more systematic screening and counseling for DMD-related cardiomuscular disease.
Jiao H, Bai J, Li P et al. · Italian journal of pediatrics · (2026) · View on PubMed ↗ · Free PDF ↗
Reverse Remodeling in Pediatric Myocarditis With DCM Phenotype Impact of rASD and PAB.
This retrospective pediatric study evaluated a staged, pathophysiology-guided strategy for myocarditis with dilated cardiomyopathy (DCM) phenotype in 31 children <3 years with biopsy-proven myocarditis, assessing the impact of left atrial decompression and pulmonary artery banding (PAB) on reverse remodeling. The key finding was that selected infants/young children treated with this staged approach showed myocardial recovery consistent with reverse remodeling, with outcomes influenced by the presence/role of rASD (relevant atrial septal defect context as described) and PAB. This is scientifically and clinically important because it suggests a targeted surgical staging approach may improve early outcomes and reduce progression to end-stage heart failure in high-risk pediatric myocarditis.
Logeswaran T, Akintürk H, Schranz D et al. · JACC. Advances · (2026) · View on PubMed ↗ · Free PDF ↗
Public Health: Tobacco/Diabetes Mortality Trends
Demographic and regional disparities in co-occurring diabetes and cerebrovascular disease mortality: A 24-year national retrospective analysis.
Using a 24-year retrospective analysis of CDC WONDER death records (1999–2023), this study examined demographic and regional disparities in mortality where both diabetes mellitus (DM) and cerebrovascular disease (CVD) were listed. The key finding was that DM–CVD co-occurring mortality varied by population characteristics and geography, identifying groups and regions at higher risk. This is significant for public health because it supports targeted interventions to reduce preventable DM-related cerebrovascular deaths.
Faheem MSB, Hassan ST, Asghar T et al. · Journal of the National Medical Association · (2026) · View on PubMed ↗
Ischemic heart disease mortality with documented tobacco use in the United States, 1999-2023: a nationwide population-based analysis.
This nationwide U.S. population-based analysis quantified ischemic heart disease (IHD) mortality trends from 1999–2023 among adults (≥25 years) with documented tobacco use disorder. Using CDC mortality data with ICD-10 I20–I25 as the underlying IHD category and ICD-10 F17 as a contributing cause, the study estimated age-adjusted mortality rates and annual percent changes via joinpoint regression. The results provide evidence on how tobacco-associated IHD mortality has evolved over time, supporting public health targeting of tobacco use to reduce IHD deaths.
Ibrahim AA, Tariq Z, Samad A et al. · Archives of public health = Archives belges de sante publique · (2026) · View on PubMed ↗ · Free PDF ↗
Environmental Contaminants & Sediment Baselines
Mapping chemical footprints: A baseline assessment for organochlorine pesticides and polychlorinated biphenyls in coastal sediments of Greece (eastern Mediterranean Sea).
This study assessed baseline contamination in coastal sediments of Greece by measuring 24 organochlorine pesticides and 25 polychlorinated biphenyls (PCBs) across 48 coastal areas sampled in March 2023 and March 2024. The authors report comprehensive pollution levels and infer potential sources of these persistent, bioaccumulative contaminants based on the measured chemical profiles. Establishing this baseline is scientifically significant because sediments can act as long-term archives and secondary sources that remobilize organochlorines into marine ecosystems.
Parinos C, Skavantzou T, Plakidi E et al. · Marine pollution bulletin · (2026) · View on PubMed ↗ · Free PDF ↗
Generated automatically on July 23, 2026. Covers PubMed articles published July 16, 2026 – July 23, 2026. Summaries are AI-generated; always consult the original publication for clinical or research decisions.