Journal of Cardiovascular Magnetic Resonance最新文献

{"title":"Three-dimensional motion corrected free-breathing simultaneous multislice-balanced steady state free precession myocardium perfusion imaging.","authors":"Naledi Adam, Ronald Mooiweer, Andrew Tyler, Karl Kunze, Radhouene Neji, Peter Speier, Daniel Stäb, John Ng, Shino Kuriakose, Reza Razavi, Muhummad Sohaib Nazir, Amedeo Chiribiri, Sébastien Roujol","doi":"10.1016/j.jocmr.2025.101897","DOIUrl":"10.1016/j.jocmr.2025.101897","url":null,"abstract":"<p><strong>Background: </strong>To develop a 3D motion-corrected simultaneous multislice-balanced steady state free precession (SMS)-bSSFP acquisition to enable free-breathing myocardial perfusion with high spatial resolution and coverage.</p><p><strong>Methods: </strong>A fast diaphragmatic respiratory navigator (fastNAV) module (<15 ms) was implemented into an SMS-bSSFP sequence for prospective slice-tracking. The remaining 2D in-plane motion was corrected using inline image registration. This approach (SMS-fastNAV) was compared to a reference SMS perfusion with 2D in-plane motion correction only (SMS-Ref) in 10 patients at 1.5T. Each subject underwent both perfusion protocols (six slices, resolution: 1.9×1.9mm²) in a random order. The residual motion of the left ventricule (LV) was assessed by measuring the average DICE coefficient of the LV (avDICE) and the average displacement of the LV center of mass location (avCOM). Subjective assessment of image quality was also performed.</p><p><strong>Results: </strong>SMS-fastNAV led to lower residual LV motion than SMS-Ref before non-rigid image registration as shown by a higher avDICE (0.93±0.02 vs. 0.89±0.04, p<0.002) and decreased avCOM (2.82±0.89 mm vs. 4.23±1.29 mm, p=0.005). After non-rigid image registration, SMS-fastNAV also led to higher avDICE score (0.95±0.01 vs. 0.94±0.02, p<0.027) and tended to decrease avCOM (0.97±0.21 mm vs. 1.01±0.25 mm, p=0.23) with respect to SMS-Ref, suggesting a reduction in through-plane motion. There were no statistical significant differences between both approaches in terms of image quality (SMS-fastNAV: 1.79±0.50 vs. SMS-Ref: 2.00±0.59, p=0.172).</p><p><strong>Conclusion: </strong>A 3D motion correction strategy was successfully developed for free-breathing SMS-bSSFP perfusion with high spatial coverage and resolution and provides improved motion correction with respect to standard in-plane image registration only.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101897"},"PeriodicalIF":4.2,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12271901/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143981598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Feasibility of fetal cardiac output measurement by phase-contrast magnetic resonance imaging using Doppler ultrasound gating increases with gestational age.","authors":"Signe Gade Hellmuth, Ditte Staub Jørgensen, Kasper Gadsbøll, Caroline Taksøe-Vester, Ann Tabor, Olav Bjørn Petersen, Niels Vejlstrup","doi":"10.1016/j.jocmr.2025.101892","DOIUrl":"10.1016/j.jocmr.2025.101892","url":null,"abstract":"<p><strong>Background: </strong>Fetal cardiovascular magnetic resonance (CMR) is a valuable tool for assessing fetal blood flow; however, its use has primarily been focused on near-term pregnancies. This study aimed to evaluate the feasibility of Doppler ultrasound-gated two-dimensional (2D) phase-contrast CMR of the human fetus in the early, mid, and late third trimester.</p><p><strong>Methods: </strong>A total of 100 fetal MRI scans were performed at gestational age (GA) 28, 32, and 38 weeks in 38 fetuses with (n = 13) and without (n = 25) congenital heart defects. Combined ventricular output was measured by Doppler ultrasound-gated 2D phase-contrast CMR in the ascending aorta and main pulmonary artery. Success rate of acquisition, repeatability of phase-contrast measurements, and intra-/interobserver agreement were assessed at each GA.</p><p><strong>Results: </strong>Combined ventricular output was obtained in 76/100 (76%) scans. The success rate of acquisition improved with increasing GA from 15/34 (44%) at GA 28 weeks to 31/35 (89%) at GA 32 weeks (p < 0.001 compared to 28 weeks) and 30/31 (97%) at GA 38 weeks (p < 0.001 compared to 28 weeks). Repeatability of phase-contrast measurements demonstrated a moderate to strong correlation (r = 0.63-0.82, p = 0.002), with no significant bias but wide limits of agreement. The mean difference ±95% limits of agreement were 7.3 ± 245 mL/min, -13.0 ± 260 mL/min, and -3.9 ± 326 mL/min at 28, 32, and 38 weeks, respectively.</p><p><strong>Conclusion: </strong>Feasibility of fetal CMR improves with increasing GA. While Doppler-gated 2D phase-contrast CMR can effectively assess fetal combined ventricular output and allows for in-group comparisons, the precision may still be insufficient for clinical application.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101892"},"PeriodicalIF":4.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143788503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mean pulmonary artery pressure prediction with explainable multi-view cardiovascular magnetic resonance cine series deep learning model.","authors":"Li-Hsin Cheng, Xiaowu Sun, Charlie Elliot, Robin Condliffe, David G Kiely, Samer Alabed, Andrew J Swift, Rob J van der Geest","doi":"10.1016/j.jocmr.2024.101133","DOIUrl":"10.1016/j.jocmr.2024.101133","url":null,"abstract":"<p><strong>Background: </strong>Pulmonary hypertension (PH) is a heterogeneous condition and regardless of etiology impacts negatively on survival. Diagnosis of PH is based on hemodynamic parameters measured invasively at right heart catheterization (RHC); however, a non-invasive alternative would be clinically valuable. Our aim was to estimate RHC parameters non-invasively from cardiac magnetic resonance (MR) data using deep learning models and to identify key contributing imaging features.</p><p><strong>Methods: </strong>We constructed an explainable convolutional neural network (CNN) taking cardiac MR cine series from four different views as input to predict mean pulmonary artery pressure (mPAP). The model was trained and evaluated on 1646 examinations. The model's attention weight and predictive performance associated with each frame, view, or phase were used to judge its importance. Additionally, the importance of each cardiac chamber was inferred by perturbing part of the input pixels.</p><p><strong>Results: </strong>The model achieved a Pearson correlation coefficient of 0.80 and R² of 0.64 in predicting mPAP and identified the right ventricle region on short-axis view to be especially informative.</p><p><strong>Conclusion: </strong>Hemodynamic parameters can be estimated non-invasively with a CNN, using MR cine series from four views, revealing key contributing features at the same time.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101133"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11782807/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142791832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cardiovascular magnetic resonance in patients with mitral valve prolapse.","authors":"Stefano Figliozzi, Silvana Di Maio, Georgios Georgiopoulos, Bert Vandenberk, Amedeo Chiribiri, Marco Francone, Nay Aung, Steffen E Petersen, Tim Leiner, Jan Bogaert, Pier-Giorgio Masci","doi":"10.1016/j.jocmr.2024.101137","DOIUrl":"10.1016/j.jocmr.2024.101137","url":null,"abstract":"<p><p>With a prevalence of 2-3% in the general population, mitral valve prolapse (MVP) is the most common valvular heart disease. The clinical course is benign in the majority of patients, although severe mitral regurgitation, heart failure, and sudden cardiac death affect a non-negligible subset of patients. Imaging of MVP was confined to echocardiography until a few years ago when it became apparent that cardiovascular magnetic resonance (CMR) could offer comparative advantages for detecting and quantifying mitral valve abnormalities alongside tissue myocardial characterization. The present review highlights the growing body of evidence supporting the role of CMR in patients with MVP. Based on the recent literature, CMR appears not as a simple alternative to echocardiography in patients with poor acoustic windows, but as a complementary imaging modality instrumental for better quantifying mitral valve abnormalities, mitral regurgitation severity, ventricular remodeling, and myocardial tissue changes. In this respect, pivotal CMR studies highlight that mitral annular disjunction and myocardial fibrosis by late gadolinium enhancement are associated with a heightened risk of life-threatening ventricular arrhythmias (arrhythmic MVP). We also delineate how these and other markers (e.g., the severity of mitral regurgitation) could enable a personalized risk assessment in patients with MVP and implement clinical decision-making. Here, we provide a comprehensive review of the current literature, with an emphasis on the arrhythmic MVP phenotype. The review also provides some practical suggestions on how to carry out a dedicated CMR protocol in MVP and composes a thorough report to inform clinicians on key aspects of this valvular heart disease.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101137"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786644/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wide variation in shape of hypoplastic left ventricles undergoing recruitment and biventricular repair: A statistical shape modeling study.","authors":"Isabel R Barnet, Noah E Schulz, Sunil J Ghelani, David M Hoganson, Eric N Feins, Peter E Hammer, Sitaram M Emani, Lynn A Sleeper, Rebecca S Beroukhim","doi":"10.1016/j.jocmr.2024.101131","DOIUrl":"10.1016/j.jocmr.2024.101131","url":null,"abstract":"<p><strong>Background: </strong>Patients with hypoplastic left ventricles (LV) who undergo volume-loading procedures (recruitment, biventricular [BIV] repair) are at risk for adverse outcomes, including heart failure and death. We investigated pre-BIV LV shape as a predictor of outcome after BIV repair in patients with hypoplastic LVs.</p><p><strong>Methods: </strong>Baseline and post-recruitment cardiac magnetic resonance imaging and computed tomography data were analyzed in patients with hypoplastic LV (<50 mL/m²). Statistical shape modeling (SSM) was utilized to generate a model of the shape and variability of LVs. Traditional measures of LV sphericity and eccentricity were also measured. Major adverse cardiovascular events (MACE) included heart failure, transplant, and death.</p><p><strong>Results: </strong>Of 95 patients with baseline mean LV volume 29 ± 13 mL/m², 45/95 (47%) had a right dominant atrioventricular canal defect, 31/95 (33%) had a variant of hypoplastic left heart syndrome, and 18/95 (19%) had endocardial fibroelastosis (EFE). A wide variation in LV shape was found by SSM, and shape modes were associated with right ventricle (RV) and LV size, and diagnosis. BIV repair was achieved in 74/95 (78%) patients; 13/74 (18%) of BIV patients had MACE. Predictors of MACE following BIV repair included EFE, higher RV mass index, and higher RV end-diastolic volume index. No baseline or post-recruitment LV shape parameter was associated with the outcome after BIV repair.</p><p><strong>Conclusion: </strong>The shape model of hypoplastic LVs demonstrated a wide array of LV shapes. LVs gained sphericity and size and lost eccentricity with recruitment. Though the ventricles changed shape with recruitment, no specific LV shape characteristic at the baseline or post-recruitment stage was predictive of decision to proceed with BIV repair or outcome. Higher RV mass and volume may represent new biomarkers that predict outcomes following BIV repair in patients with hypoplastic LV. Further investigation could determine the reproducibility of these findings.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101131"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11780089/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142794766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elevated septal native T1 time in cardiac magnetic resonance imaging suggesting myocardial fibrosis in young kidney transplant recipients.","authors":"Tim Alexander Ubenauf, Jeannine von der Born, Rizky I Sugianto, Carl Grabitz, Elena Lehmann, Nima Memaran, Nele Kanzelmeyer, Jan Falk, Nigar Babazade, Samir Sarikouch, Diane Miriam Renz, Bernhard Magnus Wilhelm Schmidt, Anette Melk","doi":"10.1016/j.jocmr.2025.101839","DOIUrl":"10.1016/j.jocmr.2025.101839","url":null,"abstract":"<p><strong>Background: </strong>Patients after kidney transplantation (KTx) in childhood show a high prevalence of cardiac complications, but the underlying mechanism is still poorly understood. In adults, myocardial fibrosis detected in cardiovascular magnetic resonance (CMR) imaging is already an established risk factor. Data for children after KTx are not available. This study aimed to explore cardiac function and structure with focus on myocardial fibrosis and associated risk factors in KTx recipients.</p><p><strong>Methods: </strong>Forty-six KTx recipients (mean age 16.0 ± 3.5 years) and 46 age- and sex-matched healthy controls were examined with non-contrast CMR imaging. Native T1 time (nT1), a marker for myocardial fibrosis, was measured at the interventricular septum. Other parameters comprised left ventricular mass index (LVMI), left ventricular ejection fraction (LVEF), and global longitudinal strain (GLS). Multivariable linear regression analyses were used to explore associations with nT1.</p><p><strong>Results: </strong>Mean nT1 was significantly higher in KTx recipients compared to controls (1198.1 ± 48.8 vs 1154.4 ± 23.4 ms, p < 0.0001). 46% (21/46) had a nT1 above the upper limit of the normal range (mean + 2 standard deviations of controls). KTx recipients showed higher LVMI z-scores (0.1 ± 1.1 vs -0.3 ± 0.7, p = 0.026), higher LVEF (67.3 ± 3.8% vs 65.3 ± 3.6%, p = 0.012), and lower GLS (-19.0 ± 2.1% vs -20.3 ± 2.7%, p = 0.010). Higher systolic blood pressure (ß = 1.284, p = 0.001), LVMI (ß = 1.542, p < 0.001), and LVEF (ß = 3.535, p = 0.026) were associated with longer nT1 only in KTx recipients, but not in controls. Only 2 KTx recipients exhibited left ventricular hypertrophy; however, a total of 18 displayed elevated nT1 with LVMI z-score within the normal range.</p><p><strong>Conclusion: </strong>Our data suggest the presence of cardiac remodeling with myocardial fibrosis in a significant proportion of young KTx recipients. Non-contrast CMR imaging has the potential to visualize early structural cardiac changes and could become an important diagnostic adjunct in the follow-up of KTx recipients. Longitudinal studies are needed to further evaluate the importance of nT1 in early identification of those at high risk for sudden cardiac death allowing to integrate preventive strategies.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101839"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11870264/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143006143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highlights of the Cardiovascular Magnetic Resonance 2024 Conference: the first joint European Association of Cardiovascular Imaging, European Society of Cardiovascular Radiology, and Society for Cardiovascular Magnetic Resonance conference.","authors":"Jadranka Stojanovska, Robin Nijveldt, Karen Ordovas, Rozemarijn Vliegenthart, Nicole Seiberlich, Claudia Prieto, Vineeta Ojha, Kate Hanneman, Benny Lawton, Marina Hughes, Vanessa Ferreira, John Grizzard, Luigi Natale, Daniel Kim, Chiara Bucciarelli-Ducci, Steffen Petersen, Thomas A Treibel","doi":"10.1016/j.jocmr.2025.101848","DOIUrl":"10.1016/j.jocmr.2025.101848","url":null,"abstract":"<p><p>Cardiovascular Magnetic Resonance 2024 Conference (CMR2024) convened in London, UK, from 24 to 26 January 2024 and brought together 2705 learners and renowned cardiac imaging professionals to discuss and learn about the latest advancements. Organized by the Society for Cardiovascular Magnetic Resonance (SCMR) and the European Association of Cardiovascular Imaging (EACVI), in collaboration with the European Society of Cardiovascular Radiology (ESCR), CMR2024 was the largest international cardiac magnetic resonance conference to date. This conference underscored the collaboration between cardiologists, radiologists, scientists, and technologists by bringing together three major societies-SCMR, EACVI, and ESCR. Innovative session formats like 'Shark Tank' and 'Workflow, Innovations & Patients' facilitated expert opinion and practical experiences sharing in a 'TED-talk style'. With over 1168 abstract submissions and 75% acceptance rate, the programme featured multiple Early Career Award sessions, oral scientific sessions, oral case sessions, and rapid-fire sessions, all categorized by topic. Highlights included patient- and physician-centred imaging sessions, sharing referring physicians' and patients' insights of incremental value of cardiovascular magnetic resonance (CMR) in patient's management. The programme offered invited lectures in eight parallel tracks with three plenary and two keynote speakers. In addition, the interactive workshops and panel discussions provided a platform for knowledge exchange, support, and collaboration. A great emphasis was placed on collaboration between radiologists, cardiologists, scientists, and technologists, showcasing an ideal cardiac imaging marriage as a model for enhanced patient care around the globe. The event also featured exhibitions of the latest CMR technology and software, offering attendees a glimpse into the future cardiac imaging. CMR2024 emerged as a remarkable scientific, educational, and networking event, in-spiring attendees to learn and collaborate within the global CMR community.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101848"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12182811/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143414113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Feasibility of magnetic resonance imaging-guided cardiac catheterization, angioplasty, and stenting in a commercial wide-bore 0.55T scanner.","authors":"Aimee K Armstrong, Yixuan Liu, John M Kelly, Ramkumar Krishnamurthy, Jason Swinning, Yingmin Liu, Matthew Joseph, Ning Jin, Jianing Pang, Florian Maier, Axel J Krafft, Orville Bramwell, Nathan Ooms, Jesse Roll, Joshua Krieger, David C Gross, Lucien de Mos, Paul Borm, Orlando P Simonetti","doi":"10.1016/j.jocmr.2025.101858","DOIUrl":"10.1016/j.jocmr.2025.101858","url":null,"abstract":"<p><strong>Background: </strong>Low-field (0.55T) magnetic resonance imaging (MRI) may allow MRI-guided interventions using available catheterization equipment, as radiofrequency-induced heating of interventional devices is reduced at low field. The purpose of this study was to test the feasibility of real-time MRI-guided right and left heart catheterization (R&LHC) as well as angioplasty and stenting of the inferior vena cava using a commercially available 0.55T MRI system (MAGNETOM Free.Max, Siemens Healthineers AG, Erlangen, Germany) with 80 cm patient bore and maximum gradient amplitude and slew rate of 26 mT/m and 45 mT/m/ms, respectively. A secondary aim was to evaluate three different sizes of magnetic resonance (MR)-visible markers.</p><p><strong>Methods: </strong>Sheaths were placed in the femoral vein and artery of juvenile Yorkshire pigs under general anesthesia. Air-filled balloon wedge catheters and Judkins right catheters were used for R&LHC, respectively, aided by an MR-compatible guidewire. Ferumoxytol was administered as a T1-shortening contrast agent and real-time visualization was carried out with a research interactive sequence using different spatiotemporal resolution settings. IVC angioplasty was performed using balloons filled with 1% gadolinium, and IVC stenting was performed with stainless-steel stents and one platinum-iridium-covered sten.</p><p><strong>Results: </strong>RHC was successful in all eight attempts with balloon tip visibility in all real-time protocols. One pig expired with ferumoxytol infusion, but the catheterization was completed post-mortem. LHC and IVC angioplasty were attempted and successful in two and four pigs, respectively. For stenting, higher resolution, lower frame rate imaging was used. All six attempted stent implantations were successful. The MR markers on the angioplasty balloon with widths of 0.5 and 1 mm were more visible than the 0.25 mm markers. Marker placement affected distinguishability from the crimped stent. Stainless-steel stents created only minimal signal voids pre- and post-deployment; however, the platinum-iridium stent caused significant artifact obscuring wall apposition assessment.</p><p><strong>Conclusion: </strong>This study is the first to demonstrate the technical feasibility of R&LHC, IVC angioplasty, and IVC stenting using real-time MRI on a commercially available low-field scanner.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101858"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12022655/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143407768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hypothermia as an adjunctive therapy to percutaneous intervention after ST-elevation myocardial infarction-Effects on regional myocardial contractility.","authors":"Lucas de Mello Queiroz, Rafael Almeida Fonseca, Luis Augusto Palma Dallan, Thatiane Facholi Polastri, Ludhmila Abrahao Hajjar, Jose Carlos Nicolau, Roberto Kalil Filho, Karl B Kern, Sergio Timerman, Carlos E Rochitte","doi":"10.1016/j.jocmr.2025.101850","DOIUrl":"10.1016/j.jocmr.2025.101850","url":null,"abstract":"<p><strong>Background: </strong>The effects of endovascular therapeutic hypothermia (ETH) in ST-elevation myocardial infarction (STEMI) regional contractility are unknown, and its impact on segmental contractility has still not been evaluated. We sought to evaluate segmental myocardial strain after ETH adjuvant to percutaneous coronary intervention (PCI) in STEMI.</p><p><strong>Methods: </strong>We included patients who underwent 1.5T cardiovascular magnetic resonance exams 5 and 30 days after acute anterior or inferior STEMI in a previous randomized trial. Left ventricle (LV) strain was evaluated on infarcted, adjacent, and remote myocardium. Segmental circumferential (CS) and radial strains (RS) were measured using feature-tracking imaging. Repeated measures of analysis of variance were used for comparisons within time and treatment.</p><p><strong>Results: </strong>Forty patients were divided into hypothermia (ETH, n = 29) and control (n = 11) groups, with 5210 LV segments. In ETH infarcted areas, RS (11.2 ± 16 vs 14.8 ± 15.2, p = 0.001) and CS (-5.4 ± 11.1 vs -8 ± 11.1, p = 0.001) showed recovery from 5-30 days compared to controls (11.4 ± 14 vs 13.1 ± 1 6.8, p = 0.09; -6.5 ± 10.6 vs -6.4 ± 12.5, p = 0.94). In control remote areas, RS (28 ± 18 vs 31.7 ± 18.5, p = 0.001) and CS (-15.5 ± 10.7 vs -17.1 ± 9, p = 0.001) improved from 5-30 days compared to ETH (28.6 ± 18.6 vs 29 ± 20, p = 0.44; -15.2 ± 10.4 vs -15.3 ± 10.6, p = 0.82). Transmural infarcted areas in ETH improved RS (11.8 ± 13.2 vs 8.17 ± 14.7, p = 0.001) and CS (-6.1 ± 10.9 vs.-3.1 ± 11.3, p = 0.001) compared to controls, with better contractility at 30 days.</p><p><strong>Conclusion: </strong>In anterior or inferior STEMI patients, ETH adjuvant to PCI is associated with significant improvement in RS and CS of infarcted areas, including transmural segments, but not in remote area. This might further increase our pathophysiological knowledge on early LV remodeling and ultimately suggest potential clinical value.</p><p><strong>Availability of data and materials: </strong>The datasets used and/or analyzed during the current study are available from the corresponding author upon reasonable request.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101850"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11986222/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143425410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved quantification of aortic regurgitation with direct regurgitant jet measurement by four-dimensional flow cardiovascular magnetic resonance in complex congenital heart disease.","authors":"Brynn Connor, Makoto Takei, Daniel E Clark, Shiraz A Maskatia","doi":"10.1016/j.jocmr.2025.101876","DOIUrl":"10.1016/j.jocmr.2025.101876","url":null,"abstract":"<p><strong>Background: </strong>Due to the presence of complex flow states and significant jet eccentricity in patients with congenital heart disease (CHD), accurate quantification of aortic regurgitation (AR) using standard echocardiographic or conventional cardiovascular magnetic resonance (CMR) imaging measures remains challenging. Four-dimensional flow (4DF) CMR permits transvalvular flow quantification under non-laminar flow states, although it has not been well validated for AR quantification in CHD.</p><p><strong>Methods: </strong>In 186 patients with moderate or complex CHD, we evaluated the agreement between different methods of AR quantification by 4DF CMR when compared to volumetry. Regurgitant flow volumes were measured (1) conventionally on time-resolved, velocity-encoded 4DF sequences at the aortic annulus, sinotubular junction (STJ), and ascending aorta (AAo), and via (2) direct regurgitant jet quantification 5 mm proximal to the vena contracta.</p><p><strong>Results: </strong>Moderate overall agreement in AR quantification was observed between study methods (ρ=0.58-0.73). Compared with conventional flow quantification at the annulus, STJ, and AAo, direct regurgitant jet measurements showed improved correlation with volumetry (ρ=0.76), especially in patients with significant aortic dilation (r=0.95-0.97). In this latter group, regurgitant flow quantification at all other aortic levels resulted in AR severity classifications that were nearly a full grade lower (mean aortic regurgitant fraction difference: 7-12% ± 10-12%; p<0.001).</p><p><strong>Conclusion: </strong>4DF CMR permits AR quantification in complex CHD with comparable accuracy to volumetry. Under non-laminar or complex flow states, as observed with significant aortic dilation, direct regurgitant jet measurements may be preferable to regurgitant flow quantification at all other aortic levels.</p>","PeriodicalId":15221,"journal":{"name":"Journal of Cardiovascular Magnetic Resonance","volume":" ","pages":"101876"},"PeriodicalIF":6.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12053713/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143615556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}