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Journal of Cardiovascular Magnetic Resonance

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https://www.readbyqxmd.com/read/29925397/right-heart-catheterization-using-metallic-guidewires-and-low-sar-cardiovascular-magnetic-resonance-fluoroscopy-at-1-5-tesla-first-in-human-experience
#1
Adrienne E Campbell-Washburn, Toby Rogers, Annette M Stine, Jaffar M Khan, Rajiv Ramasawmy, William H Schenke, Delaney R McGuirt, Jonathan R Mazal, Laurie P Grant, Elena K Grant, Daniel A Herzka, Robert J Lederman
BACKGROUND: Cardiovascular magnetic resonance (CMR) fluoroscopy allows for simultaneous measurement of cardiac function, flow and chamber pressure during diagnostic heart catheterization. To date, commercial metallic guidewires were considered contraindicated during CMR fluoroscopy due to concerns over radiofrequency (RF)-induced heating. The inability to use metallic guidewires hampers catheter navigation in patients with challenging anatomy. Here we use low specific absorption rate (SAR) imaging from gradient echo spiral acquisitions and a commercial nitinol guidewire for CMR fluoroscopy right heart catheterization in patients...
June 21, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29925388/determination-of-aortic-stiffness-using-4d-flow-cardiovascular-magnetic-resonance-a-population-based-study
#2
Andreas Harloff, Hanieh Mirzaee, Thomas Lodemann, Paul Hagenlocher, Thomas Wehrum, Judith Stuplich, Anja Hennemuth, Jürgen Hennig, Sebastian Grundmann, Werner Vach
BACKGROUND: Increased aortic stiffness is an independent predictor of cardiovascular disease. Optimal measurement is highly beneficial for the detection of atherosclerosis and the management of patients at risk. Thus, it was our purpose to selectively measure aortic stiffness using a novel imaging method and to provide reference values from a population-based study. METHODS: One hundred twenty six inhabitants of Freiburg, Germany, between 20 and 80 years prospectively underwent 3 Tesla cardiovascular magnetic resonance (CMR) of the thoracic aorta...
June 21, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29909774/cardiovascular-magnetic-resonance-assessment-of-acute-cardiovascular-effects-of-voluntary-apnoea-in-elite-divers
#3
L Eichhorn, J Doerner, J A Luetkens, J M Lunkenheimer, R C Dolscheid-Pommerich, F Erdfelder, R Fimmers, J Nadal, B Stoffel-Wagner, H H Schild, A Hoeft, B Zur, C P Naehle
BACKGROUND: Prolonged breath holding results in hypoxemia and hypercapnia. Compensatory mechanisms help maintain adequate oxygen supply to hypoxia sensitive organs, but burden the cardiovascular system. The aim was to investigate human compensatory mechanisms and their effects on the cardiovascular system with regard to cardiac function and morphology, blood flow redistribution, serum biomarkers of the adrenergic system and myocardial injury markers following prolonged apnoea. METHODS: Seventeen elite apnoea divers performed maximal breath-hold during cardiovascular magnetic resonance imaging (CMR)...
June 18, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29909772/impact-of-surgical-pulmonary-valve-replacement-on-ventricular-strain-and-synchrony-in-patients-with-repaired-tetralogy-of-fallot-a-cardiovascular-magnetic-resonance-feature-tracking-study
#4
Sowmya Balasubramanian, David M Harrild, Basavaraj Kerur, Edward Marcus, Pedro Del Nido, Tal Geva, Andrew J Powell
BACKGROUND: In patients with repaired tetralogy of Fallot (TOF), a better understanding of the impact of surgical pulmonary valve replacement (PVR) on ventricular mechanics may lead to improved indications and outcomes. Therefore, we used cardiovascular magnetic resonance (CMR) feature tracking analysis to quantify ventricular strain and synchrony in repaired TOF patients before and after PVR. METHODS: Thirty-six repaired TOF patients (median age 22.4 years) prospectively underwent CMR a mean of 4...
June 18, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29898740/prognostic-value-of-myocardial-strain-and-late-gadolinium-enhancement-on-cardiovascular-magnetic-resonance-imaging-in-patients-with-idiopathic-dilated-cardiomyopathy-with-moderate-to-severely-reduced-ejection-fraction
#5
Seung-Hoon Pi, Sung Mok Kim, Jin-Oh Choi, Eun Kyoung Kim, Sung-A Chang, Yeon Hyeon Choe, Sang-Chol Lee, Eun-Seok Jeon
BACKGROUND: It has been reported that left ventricular (LV) myocardial strain and late gadolinium enhancement (LGE) on cardiovascular magnetic resonance (CMR) imaging have prognostic value in patients with heart failure (HF). However, previous studies included patients with various systolic functions. This study aimed to investigate the prognostic value of LV myocardial strain and LGE on CMR imaging in patients with idiopathic dilated cardiomyopathy (DCM) with reduced ejection fraction (EF < 40%)...
June 14, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29898736/3d-whole-brain-vessel-wall-cardiovascular-magnetic-resonance-imaging-a-study-on-the-reliability-in-the-quantification-of-intracranial-vessel-dimensions
#6
Na Zhang, Fan Zhang, Zixin Deng, Qi Yang, Marcio A Diniz, Shlee S Song, Konrad H Schlick, M Marcel Maya, Nestor Gonzalez, Debiao Li, Hairong Zheng, Xin Liu, Zhaoyang Fan
BACKGROUND: One of the potentially important applications of three-dimensional (3D) intracranial vessel wall (IVW) cardiovascular magnetic resonance (CMR) is to monitor disease progression and regression via quantitative measurement of IVW morphology during medical management or drug development. However, a prerequisite for this application is to validate that IVW morphologic measurements based on the modality are reliable. In this study we performed comprehensive reliability analysis for the recently proposed whole-brain IVW CMR technique...
June 14, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29898733/age-related-changes-of-right-atrial-morphology-and-inflow-pattern-assessed-using-4d-flow-cardiovascular-magnetic-resonance-results-of-a-population-based-study
#7
Thomas Wehrum, Thomas Lodemann, Paul Hagenlocher, Judith Stuplich, Ba Thanh Truc Ngo, Sebastian Grundmann, Anja Hennemuth, Jürgen Hennig, Andreas Harloff
BACKGROUND: To assess age-related changes of blood flow and geometry of the caval veins and right atrium (RA) using 4D flow cardiovascular magnetic resonance (CMR) data obtained in a population-based study. METHODS: An age-stratified sample (n = 126) of the population of the city of Freiburg, Germany, underwent transthoracic echocardiography and electrocardiogram-triggered and navigator-gated 4D flow CMR at 3 Tesla covering the caval veins and right heart...
June 14, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29880054/quantitative-assessment-of-symptomatic-intracranial-atherosclerosis-and-lenticulostriate-arteries-in-recent-stroke-patients-using-whole-brain-high-resolution-cardiovascular-magnetic-resonance-imaging
#8
Mengnan Wang, Fang Wu, Yujiao Yang, Huijuan Miao, Zhaoyang Fan, Xunming Ji, Debiao Li, Xiuhai Guo, Qi Yang
BACKGROUND: It has been shown that intracranial atherosclerotic stenosis (ICAS) has heterogeneous features in terms of plaque instability and vascular remodeling. Therefore, quantitative information on the changes of intracranial atherosclerosis and lenticulostriate arteries (LSAs) may potentially improve understanding of the pathophysiological mechanisms underlying stroke and may guide the treatment and work-up strategies. Our present study aimed to use a novel whole-brain high-resolution cardiovascular magnetic resonance imaging (WB-HRCMR) to assess both ICAS plaques and LSAs in recent stroke patients...
June 7, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29879996/quantification-of-myocardial-infarct-area-based-on-t-raffn-relaxation-time-maps-comparison-with-cardiovascular-magnetic-resonance-late-gadolinium-enhancement-t-1%C3%AF-and-t-2-in-vivo
#9
Elias Yla-Herttuala, Svetlana Laidinen, Hanne Laakso, Timo Liimatainen
BACKGROUND: Two days after myocardial infarction (MI), the infarct consists mostly on necrotic tissue, and the myocardium is transformed through granulation tissue to scar in two weeks after the onset of ischemia in mice. In the current work, we determined and optimized cardiovascular magnetic resonance (CMR) methods for the detection of MI size during the scar formation without contrast agents in mice. METHODS: We characterized MI and remote areas with rotating frame relaxation time mapping including relaxation along fictitious field in nth rotating frame (RAFFn), T1ρ and T2 relaxation time mappings at 1, 3, 7, and 21 days after MI...
June 7, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29792210/quantitative-cardiovascular-magnetic-resonance-extracellular-volume-native-t1-and-18f-fdg-pet-cmr-imaging-in-patients-after-revascularized-myocardial-infarction-and-association-with-markers-of-myocardial-damage-and-systemic-inflammation
#10
Karl P Kunze, Ralf J Dirschinger, Hans Kossmann, Franziska Hanus, Tareq Ibrahim, Karl-Ludwig Laugwitz, Markus Schwaiger, Christoph Rischpler, Stephan G Nekolla
BACKGROUND: Characterization of tissue integrity and inflammatory processes after acute myocardial infarction (AMI) using non-invasive imaging is predictive of patient outcome. Quantitative cardiovascular magnetic resonance (CMR) techniques such as native T1 and extracellular volume (ECV) mapping as well as 18 F-FDG positron emission tomography (PET) imaging targeting inflammatory cell populations are gaining acceptance, but are often applied without assessing their quantitative potential...
May 24, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29783986/impact-of-the-cone-operation-on-left-ventricular-size-function-and-dyssynchrony-in-ebstein-anomaly-a-cardiovascular-magnetic-resonance-study
#11
Rebecca S Beroukhim, Linyuan Jing, David M Harrild, Brandon K Fornwalt, Abba Mejia-Spiegeler, Jonathan Rhodes, Sitaram Emani, Andrew J Powell
BACKGROUND: In addition to tricuspid regurgitation (TR) and right ventricular (RV) enlargement, patients with Ebstein anomaly are at risk for left ventricular (LV) dysfunction and dyssynchrony. We studied the impact of the cone tricuspid valve reconstruction operation on LV size, function, and dyssynchrony. METHODS: All Ebstein anomaly patients who had both pre- and postoperative cardiovascular magnetic resonance (CMR) studies were retrospectively identified. From cine images, RV and LV volumes and ejection fractions (EF) were calculated, and LV circumferential and longitudinal strain were measured by feature tracking...
May 21, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29730991/feasibility-of-cardiovascular-magnetic-resonance-to-detect-oxygenation-deficits-in-patients-with-multi-vessel-coronary-artery-disease-triggered-by-breathing-maneuvers
#12
Kady Fischer, Kyohei Yamaji, Silvia Luescher, Yasushi Ueki, Bernd Jung, Hendrik von Tengg-Kobligk, Stephan Windecker, Matthias G Friedrich, Balthasar Eberle, Dominik P Guensch
BACKGROUND: Hyperventilation with a subsequent breath-hold has been successfully used as a non-pharmacological vasoactive stimulus to induce changes in myocardial oxygenation. The purpose of this pilot study was to assess if this maneuver is feasible in patients with multi-vessel coronary artery disease (CAD), and if it is effective at detecting coronary artery stenosis > 50% determined by quantitative coronary angiography (QCA). METHODS: Twenty-six patients with coronary artery stenosis (QCA > 50% diameter stenosis) underwent a contrast-free cardiovascular magnetic resonance (CMR) exam in the time interval between their primary coronary angiography and a subsequent percutaneous coronary intervention (PCI, n = 24) or coronary artery bypass (CABG, n = 2) revascularization procedure...
May 7, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29720202/optimization-of-late-gadolinium-enhancement-cardiovascular-magnetic-resonance-imaging-of-post-ablation-atrial-scar-a-cross-over-study
#13
Henry Chubb, Shadman Aziz, Rashed Karim, Christian Sohns, Orod Razeghi, Steven E Williams, John Whitaker, James Harrison, Amedeo Chiribiri, Tobias Schaeffter, Matthew Wright, Mark O'Neill, Reza Razavi
BACKGROUND: Cardiovascular magnetic resonance (CMR) imaging may be used to visualize post-ablation atrial scar (PAAS), and three-dimensional late gadolinium enhancement (3D LGE) is the most widely employed technique for imaging of chronic scar. Detection of PAAS provides a unique non-invasive insight into the effects of the ablation and may help guide further ablation procedures. However, there is evidence that PAAS is often not detected by CMR, implying a significant sensitivity problem, and imaging parameters vary between leading centres...
May 3, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29706134/additive-value-of-3t-cardiovascular-magnetic-resonance-coronary-angiography-for-detecting-coronary-artery-disease
#14
Lijun Zhang, Xiantao Song, Li Dong, Jianan Li, Ruiyu Dou, Zhanming Fan, Jing An, Debiao Li
BACKGROUND: The purpose of the work was to evaluate the incremental diagnostic value of free-breathing, contrast-enhanced, whole-heart, 3 T cardiovascular magnetic resonance coronary angiography (CE-MRCA) to stress/rest myocardial perfusion imaging (MPI) and late gadolinium enhancement (LGE) imaging for detecting coronary artery disease (CAD). METHODS: Fifty-one patients with suspected CAD underwent a comprehensive cardiovascular magnetic resonance (CMR) examination (CE-MRCA, MPI, and LGE)...
April 30, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29695254/atherosclerosis-t1-weighted-characterization-catch-evaluation-of-the-accuracy-for-identifying-intraplaque-hemorrhage-with-histological-validation-in-carotid-and-coronary-artery-specimens
#15
Wen Liu, Yibin Xie, Chuan Wang, Yanni Du, Christopher Nguyen, Zhenjia Wang, Zhaoyang Fan, Li Dong, Yi Liu, Xiaoming Bi, Jing An, Chengxiong Gu, Wei Yu, Debiao Li
BACKGROUND: Coronary high intensity plaques (CHIPs) detected using cardiovascular magnetic resonance (CMR) coronary atherosclerosis T1-weighted characterization with integrated anatomical reference (CATCH) have been shown to be positively associated with high-risk morphology observed on intracoronary optical coherence tomography (OCT). This study sought to validate whether CHIPs detected on CATCH indicate the presence of intraplaque hemorrhage (IPH) through ex vivo imaging of carotid and coronary plaque specimens, with histopathology as the standard reference...
April 26, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29695249/aortic-flow-patterns-and-wall-shear-stress-maps-by-4d-flow-cardiovascular-magnetic-resonance-in-the-assessment-of-aortic-dilatation-in-bicuspid-aortic-valve-disease
#16
José Fernando Rodríguez-Palomares, Lydia Dux-Santoy, Andrea Guala, Raquel Kale, Giuliana Maldonado, Gisela Teixidó-Turà, Laura Galian, Marina Huguet, Filipa Valente, Laura Gutiérrez, Teresa González-Alujas, Kevin M Johnson, Oliver Wieben, David García-Dorado, Arturo Evangelista
BACKGROUND: In patients with bicuspid valve (BAV), ascending aorta (AAo) dilatation may be caused by altered flow patterns and wall shear stress (WSS). These differences may explain different aortic dilatation morphotypes. Using 4D-flow cardiovascular magnetic resonance (CMR), we aimed to analyze differences in flow patterns and regional axial and circumferential WSS maps between BAV phenotypes and their correlation with ascending aorta dilatation morphotype. METHODS: One hundred and one BAV patients (aortic diameter ≤ 45 mm, no severe valvular disease) and 20 healthy subjects were studied by 4D-flow CMR...
April 26, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29681243/association-between-myocardial-extracellular-volume-and-strain-analysis-through-cardiovascular-magnetic-resonance-with-histological-myocardial-fibrosis-in-patients-awaiting-heart-transplantation
#17
Yue Cui, Yukun Cao, Jing Song, Nianguo Dong, Xiangchuang Kong, Jing Wang, Yating Yuan, Xiaolei Zhu, Xu Yan, Andreas Greiser, Heshui Shi, Ping Han
BACKGROUND: Cardiovascular magnetic resonance (CMR)-derived extracellular volume (ECV) and tissue tracking strain analyses are proposed as non-invasive methods for quantifying myocardial fibrosis and deformation. This study sought (1) to histologically validate myocardial ECV against the collagen volume fraction (CVF) measured from tissue samples of patients undergoing heart transplantation and (2) to detect the correlations between myocardial systolic strain and the myocardial ECV and histological CVF in patients undergoing heart transplantation...
April 23, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29669563/a-comparison-of-both-dense-and-feature-tracking-techniques-with-tagging-for-the-cardiovascular-magnetic-resonance-assessment-of-myocardial-strain
#18
J Jane Cao, Nora Ngai, Lynette Duncanson, Joshua Cheng, Kathleen Gliganic, Qizhi Chen
BACKGROUND: Myocardial strain is increasingly recognized as an important assessment for myocardial function. In addition, it also improves outcome prediction. However, there is lack of standardization in strain evaluation by cardiovascular magnetic resonance (CMR). In this study we compared strain values using multiple techniques and multiple vendor products. METHODS: Prospectively recruited patients with cardiomyopathy of diverse etiology (N = 77) and healthy controls (N = 10) underwent CMR on a 1...
April 19, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29609642/a-comprehensive-characterization-of-myocardial-and-vascular-phenotype-in-pediatric-chronic-kidney-disease-using-cardiovascular-magnetic-resonance-imaging
#19
Mun Hong Cheang, Nathaniel J Barber, Abbas Khushnood, Jakob A Hauser, Gregorz T Kowalik, Jennifer A Steeden, Michael A Quail, Kjell Tullus, Daljit Hothi, Vivek Muthurangu
BACKGROUND: Children with chronic kidney disease (CKD) have increased cardiovascular mortality. Identifying high-risk children who may benefit from further therapeutic intervention is difficult as cardiovascular abnormalities are subtle. Although transthoracic echocardiography may be used to detect sub-clinical abnormalities, it has well-known problems with reproducibility that limit its ability to accurately detect these changes. Cardiovascular magnetic resonance (CMR) is the reference standard method for assessing blood flow, cardiac structure and function...
March 29, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29576016/correction-to-simple-motion-correction-strategy-reduces-respiratory-induced-motion-artifacts-for-k-t-accelerated-and-compressed-sensing-cardiovascular-magnetic-resonance-perfusion-imaging
#20
Ruixi Zhou, Wei Huang, Yang Yang, Xiao Chen, Daniel S Weller, Christopher M Kramer, Sebastian Kozerke, Michael Salerno
Figure 1 of this original publication contained a minor error as one of the lines in the "Reconstruction pipline" was not visible. The updated Fig. 1 is published in this correction article.
March 26, 2018: Journal of Cardiovascular Magnetic Resonance
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