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https://www.readbyqxmd.com/read/27865184/changes-of-left-ventricular-mechanics-after-trans-catheter-aortic-valve-implantation-and-surgical-aortic-valve-replacement-for-severe-aortic-stenosis-a-tissue-tracking-cardiac-magnetic-resonance-study
#1
Gaetano Nucifora, John-Paul Tantiongco, Gareth Crouch, Jayme Bennetts, Ajay Sinhal, Phillip J Tully, Craig Bradbrook, Robert A Baker, Joseph B Selvanayagam
BACKGROUND: Left ventricular (LV) mechanics are impaired in patients with severe aortic stenosis (AS). The aim of the present study was to assess their changes early and late after trans-catheter aortic valve implantation (TAVI) and surgical aortic valve replacement (AVR) using cardiac magnetic resonance (CMR) tissue-tracking imaging. METHODS: In 59 patients with severe AS undergoing either TAVI (n=35) or surgical AVR (n=24), CMR with late gadolinium enhancement (LGE) imaging was performed before and early post-procedure to evaluate LV function and mass, and presence/extent of LGE...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27861188/controversies-in-quantification-of-mitral-valve-regurgitation-role-of-cardiac-magnetic-resonance-imaging
#2
Kim A Connelly, Edwin C Ho, Howard Leong-Poi
PURPOSE OF REVIEW: Mitral regurgitation remains a common problem, and when severe, is associated with significant morbidity and mortality. At present, echocardiography remains the primary modality for assessing both mechanism and severity of mitral regurgitation. However, recent studies demonstrate that the echocardiographic assessment of mitral regurgitation severity may be subject to variability as a result of semiquantitative parameters, dependence upon loading conditions and significant interobserver variability...
November 18, 2016: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/27837302/longitudinal-validation-of-the-diastolic-to-systolic-time-velocity-integral-ratio-as-a-doppler-derived-measure-of-pulmonary-regurgitation-in-patients-with-repaired-tetralogy-of-fallot
#3
Misha Bhat, Elizabeth Goldmuntz, Mark A Fogel, Jack Rychik, Laura Mercer-Rosa
Pulmonary regurgitation (PR) is a common residual lesion and major determinant of outcome following surgical repair for tetralogy of Fallot. We sought to longitudinally study a previously described echocardiographic index as a correlate of PR measured by cardiac magnetic resonance imaging (CMR). We conducted a retrospective longitudinal study of patients with baseline and follow-up echocardiogram and CMR. The baseline studies were obtained as part of a research protocol, while the follow-up studies were performed for clinical purposes...
November 11, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27832567/comparison-of-bioreactance-non-invasive-cardiac-output-measurements-with-cardiac-magnetic-resonance-imaging
#4
F Trinkmann, C Schneider, J D Michels, K Stach, C Doesch, S O Schoenberg, M Borggrefe, J Saur, T Papavassiliu
Impedance cardiography measurement of cardiac output gained wide interest due to its ease of use and non-invasiveness. However, validation studies of different algorithms yielded diverging results. Bioreactance (BR) as a recent adaption differs fundamentally as the flow signal is derived from phase shifts. Our aim was to assess the accuracy and reproducibility of BR, as compared to the non-invasive gold standard--cardiac magnetic resonance imaging (CMR). We prospectively included 32 stable patients. BR was performed twice in the supine position and averaged over 30 seconds...
November 2016: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/27815793/cardiovascular-magnetic-resonance-in-patients-with-magnetic-resonance-conditional-pacemaker-systems-at-1-5%C3%A2-t-influence-of-pacemaker-related-artifacts-on-image-quality-including-first-pass-perfusion-aortic-and-mitral-valve-assessment-flow-measurement-short
#5
REVIEW
Oliver Klein-Wiele, Marietta Garmer, Martin Busch, Serban Mateiescu, Rhyan Urbien, Gianluca Barbone, Kaffer Kara, Michael Schulte-Hermes, Frauke Metz, Birgit Hailer, Dietrich Grönemeyer
There are only limited data on the impact of device-related artifacts on image quality in cardiovascular magnetic resonance imaging (CMR) in patients with pacemakers (PM). Adenosine stress perfusion, T1-weighted imaging and flow measurement as well as valve characterization have not been evaluated previously concerning artifact burden. We aimed to assess image quality in all routinely used CMR sequences. We analyzed 2623 myocardial segments in CMR scans of 61 patients with MR conditional PM (mean age 72.1 ± 11...
November 4, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27793103/the-sphinx-s-riddle-cardiovascular-involvement-in-autoimmune-rheumatic-disease
#6
REVIEW
Sophie Mavrogeni, George Markousis-Mavrogenis, Genovefa Kolovou
Factors leading to Cardiovascular Disease (CVD) in Autoimmune Rheumatic Diseases (ARD) include: a) atherosclerosis and macro-microvascular coronary artery disease b) pericardial, myocardial and vascular inflammation c) heart valve disease d) heart failure and e) pulmonary hypertension.Cardiology utilizes various non-invasive imaging modalities, such as rest/stress Electrocardiogram (ECG), echocardiography, nuclear imaging and more recently Cardiovascular Magnetic Resonance (CMR) to detect ischemic or inflammatory disease in ARD...
October 28, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27692661/usefulness-of-3-tesla-cardiac-magnetic-resonance-imaging-in-the-assessment-of-aortic-stenosis-severity-in-routine-clinical-practice
#7
Franck Levy, Laura Iacuzio, Filippo Civaia, Stephane Rusek, Carine Dommerc, Nicolas Hugues, Clara Alexandrescu, Vincent Dor, Christophe Tribouilloy, Gilles Dreyfus
BACKGROUND: Recently, 1.5-Tesla cardiac magnetic resonance imaging (CMR) was reported to provide a reliable alternative to transthoracic echocardiography (TTE) for the quantification of aortic stenosis (AS) severity. Few data are available using higher magnetic field strength MRI systems in this context. AIMS: To evaluate the feasibility and reproducibility of the assessment of aortic valve area (AVA) using 3-Tesla CMR in routine clinical practice, and to assess concordance between TTE and CMR for the estimation of AS severity...
November 2016: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/27666627/cloud-processed-4d-cmr-flow-imaging-for-pulmonary-flow-quantification
#8
Raluca G Chelu, Kevin W Wanambiro, Albert Hsiao, Laurens E Swart, Teun Voogd, Allard T van den Hoven, Matthijs van Kranenburg, Adriaan Coenen, Sara Boccalini, Piotr A Wielopolski, Mika W Vogel, Gabriel P Krestin, Shreyas S Vasanawala, Ricardo P J Budde, Jolien W Roos-Hesselink, Koen Nieman
OBJECTIVES: In this study, we evaluated a cloud-based platform for cardiac magnetic resonance (CMR) four-dimensional (4D) flow imaging, with fully integrated correction for eddy currents, Maxwell phase effects, and gradient field non-linearity, to quantify forward flow, regurgitation, and peak systolic velocity over the pulmonary artery. METHODS: We prospectively recruited 52 adult patients during one-year period from July 2014. The 4D flow and planar (2D) phase-contrast (PC) were acquired during same scanning session, but 4D flow was scanned after injection of a gadolinium-based contrast agent...
October 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27627806/patient-specific-mri-based-right-ventricle-models-using-different-zero-load-diastole-and-systole-geometries-for-better-cardiac-stress-and-strain-calculations-and-pulmonary-valve-replacement-surgical-outcome-predictions
#9
Dalin Tang, Pedro J Del Nido, Chun Yang, Heng Zuo, Xueying Huang, Rahul H Rathod, Vasu Gooty, Alexander Tang, Zheyang Wu, Kristen L Billiar, Tal Geva
BACKGROUND: Accurate calculation of ventricular stress and strain is critical for cardiovascular investigations. Sarcomere shortening in active contraction leads to change of ventricular zero-stress configurations during the cardiac cycle. A new model using different zero-load diastole and systole geometries was introduced to provide more accurate cardiac stress/strain calculations with potential to predict post pulmonary valve replacement (PVR) surgical outcome. METHODS: Cardiac magnetic resonance (CMR) data were obtained from 16 patients with repaired tetralogy of Fallot prior to and 6 months after pulmonary valve replacement (8 male, 8 female, mean age 34...
2016: PloS One
https://www.readbyqxmd.com/read/27619332/an-unusual-finding-in-the-right-atrium
#10
Chee Loong Chow, Sylvia S M Chen, William van Gaal
CLINICAL INTRODUCTION: A 66-year-old asymptomatic patient underwent a routine transthoracic echocardiogram prior to commencement of clozapine, and was found to have a mobile echogenic structure in the right atrium, which was later confirmed on transoesophageal echocardiogram to be adjacent to the insertion of inferior vena cava.Follow-up cardiovascular MRI (CMR) revealed a mobile, avascular 2.1×2.2 cm(2) mass with regular and smooth borders, adjacent to the eustachian valve (Figure 1 panel A: coronal view; online supplementary movie 1)...
September 12, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27599727/flow-measurement-at-the-aortic-root-impact-of-location-of-through-plane-phase-contrast-velocity-mapping
#11
Litten Bertelsen, Jesper Hastrup Svendsen, Lars Køber, Ketil Haugan, Søren Højberg, Carsten Thomsen, Niels Vejlstrup
BACKGROUND: Cardiovascular magnetic resonance (CMR) is considered the gold standard of cardiac volumetric measurements. Flow in the aortic root is often measured at the sinotubular junction, even though placing the slice just above valve level may be more precise. It is unknown how much flow measurements vary at different levels in the aortic root and which level corresponds best to left ventricle volumetry. METHODS: All patients were older than 70 years presenting with at least one of the following diagnoses: diabetes, hypertension, prior stroke and/or heart failure...
September 7, 2016: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/27565842/right-ventricular-function-following-surgical-aortic-valve-replacement-and-transcatheter-aortic-valve-implantation-a-cardiovascular-mr-study
#12
Tarique Al Musa, Akhlaque Uddin, Timothy A Fairbairn, Laura E Dobson, Christopher D Steadman, Ananth Kidambi, David P Ripley, Peter P Swoboda, Adam K McDiarmid, Bara Erhayiem, Pankaj Garg, Daniel J Blackman, Sven Plein, Gerald P McCann, John P Greenwood
OBJECTIVE: The response of the RV following treatment of aortic stenosis is poorly defined, reflecting the challenge of accurate RV assessment. Cardiovascular magnetic resonance (CMR) is the established reference for imaging of RV volumes, mass and function. We sought to define the impact of transcatheter aortic valve implantation (TAVI) and surgical aortic valve replacement (SAVR) upon RV function in patients treated for severe aortic stenosis using CMR. METHODS: A 1...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27515954/diffuse-myocardial-fibrosis-in-patients-with-mitral-valve-prolapse-and-ventricular-arrhythmia
#13
An H Bui, Sébastien Roujol, Murilo Foppa, Kraig V Kissinger, Beth Goddu, Thomas H Hauser, Peter J Zimetbaum, Long H Ngo, Warren J Manning, Reza Nezafat, Francesca N Delling
OBJECTIVE: We aimed to investigate the association of diffuse myocardial fibrosis by cardiac magnetic resonance (CMR) T1 with complex ventricular arrhythmia (ComVA) in mitral valve prolapse (MVP). METHODS: A retrospective analysis was performed on 41 consecutive patients with MVP referred for CMR between 2006 and 2011, and 31 healthy controls. Arrhythmia analysis was available in 23 patients with MVP with Holter/event monitors. Left ventricular (LV) septal T1 times were derived from Look-Locker sequences after administration of 0...
August 11, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27501895/morphologic-and-functional-abnormalities-in-patients-with-ebstein-s-anomaly-with-cardiac-magnetic-resonance-imaging-correlation-with-tricuspid-regurgitation
#14
Xi Liu, Qin Zhang, Zhi-Gang Yang, Ying-Kun Guo, Ke Shi, Hua-Yan Xu, Ling-Yi Wen, Rui Li, Jing Chen
PURPOSE: The aim of this study was to assess the correlations of functional and dimensional parameters with the severity of tricuspid regurgitation in patients with Ebstein's anomaly (EA) by using cardiac magnetic resonance (CMR) imaging. MATERIALS AND METHODS: Thirty-three patients with EA without previous cardiac surgery and 25 normal individuals were recruited and underwent both cardiac MR imaging and preoperative transthoracic echocardiography. The left ventricular (LV) functional parameters and dimensions of the right ventricle (RV) and LV were measured using 3...
September 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27491900/cardiovascular-magnetic-resonance-to-evaluate-aortic-regurgitation-after-transcatheter-aortic-valve-replacement
#15
Henrique B Ribeiro, Stefan Orwat, Salim S Hayek, Éric Larose, Vasilis Babaliaros, Abdellaziz Dahou, Florent Le Ven, Sergio Pasian, Rishi Puri, Omar Abdul-Jawad Altisent, Francisco Campelo-Parada, Marie-Annick Clavel, Philippe Pibarot, Stamatios Lerakis, Helmut Baumgartner, Josep Rodés-Cabau
BACKGROUND: Residual aortic regurgitation (AR) following transcatheter aortic valve replacement (TAVR) is associated with greater mortality; yet, determining AR severity post-TAVR using Doppler echocardiography remains challenging. Cardiovascular magnetic resonance (CMR) is purported as a more accurate means of quantifying AR; however, no data exist regarding the prognostic value of AR as assessed by CMR post-TAVR. OBJECTIVES: This study sought to evaluate the effect of AR assessed with CMR on clinical outcomes post-TAVR...
August 9, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27460767/prognostic-value-of-t1-mapping-in-tavr-patients-extra-cellular-volume-as-a-possible-predictor-for-peri-and-post-tavr-adverse-events
#16
Jonathan Nadjiri, Hanna Nieberler, Eva Hendrich, Albrecht Will, Costanza Pellegrini, Oliver Husser, Christian Hengstenberg, Andreas Greiser, Stefan Martinoff, Martin Hadamitzky
The benefit of a transcatheter aortic valve replacement (TAVR) can differ in patients, and therapy bears severe risks. High-degree aortic stenosis can lead to cardiac damage such as diffuse myocardial fibrosis, evaluable by extra-cellular volume (ECV) in CMR. Therefore, fibrosis might be a possible risk factor for unfavorable outcome after TAVR. We sought to assess the prognostic value of T1-mapping and ECV to predict adverse events during and after TAVR. The study population consisted of patients undergoing clinically indicated TAVR by performing additional CMR with native and contrast-enhanced T1-mapping sequences for additional evaluation of ECV...
November 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27429910/the-role-of-cardiovascular-magnetic-resonance-in-the-assessment-of-severe-aortic-stenosis-and-in-post-procedural-evaluation-following-transcatheter-aortic-valve-implantation-and-surgical-aortic-valve-replacement
#17
REVIEW
Tarique Al Musa, Sven Plein, John P Greenwood
Degenerative aortic stenosis (AS) is the most common valvular disease in the western world with a prevalence expected to double within the next 50 years. International guidelines advocate the use of cardiovascular magnetic resonance (CMR) as an investigative tool, both to guide diagnosis and to direct optimal treatment. CMR is the reference standard for quantifying both left and right ventricular volumes and mass, which is essential to assess the impact of AS upon global cardiac function. Given the ability to image any structure in any plane, CMR offers many other diagnostic strengths including full visualisation of valvular morphology, direct planimetry of orifice area, the quantification of stenotic jets and in particular, accurate quantification of valvular regurgitation...
June 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/27418610/prevalence-and-prognostic-significance-of-right-ventricular-systolic-dysfunction-in-patients-undergoing-transcatheter-aortic-valve-implantation
#18
Alistair C Lindsay, Katie Harron, Richard J Jabbour, Ritesh Kanyal, Thomas M Snow, Paramvir Sawhney, Francisco Alpendurada, Michael Roughton, Dudley J Pennell, Alison Duncan, Carlo Di Mario, Simon W Davies, Raad H Mohiaddin, Neil E Moat
BACKGROUND: Cardiovascular magnetic resonance (CMR) can provide important structural information in patients undergoing transcatheter aortic valve implantation. Although CMR is considered the standard of reference for measuring ventricular volumes and mass, the relationship between CMR findings of right ventricular (RV) function and outcomes after transcatheter aortic valve implantation has not previously been reported. METHODS AND RESULTS: A total of 190 patients underwent 1...
July 2016: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/27390538/morphological-and-functional-evaluation-of-quadricuspid-aortic-valves-using-cardiac-computed-tomography
#19
Inyoung Song, Jung Ah Park, Bo Hwa Choi, Sung Min Ko, Je Kyoun Shin, Hyun Keun Chee, Jun Seok Kim
OBJECTIVE: The aim of this study was to identify the morphological and functional characteristics of quadricuspid aortic valves (QAV) on cardiac computed tomography (CCT). MATERIALS AND METHODS: We retrospectively enrolled 11 patients with QAV. All patients underwent CCT and transthoracic echocardiography (TTE), and 7 patients underwent cardiovascular magnetic resonance (CMR). The presence and classification of QAV assessed by CCT was compared with that of TTE and intraoperative findings...
July 2016: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/27371413/predictors-of-change-in-functional-health-status-in-adults-with-repaired-tetralogy-of-fallot
#20
Jimmy C Lu, Sunkyung Yu, Ray Lowery, Janaki Sagi, Amanda C Delong, Prachi P Agarwal, Maryam Ghadimi Mahani, Adam L Dorfman
Left ventricular (LV) ejection fraction (EF) and right ventricular (RV) ejection fraction by cardiovascular magnetic resonance (CMR) are associated with functional health status in patients with repaired tetralogy of Fallot (TOF) in cross-sectional studies, but few longitudinal data are available. This study aimed to determine predictors of subsequent decrease in functional health status in midterm follow-up. Patients with repaired TOF who had previously completed CMR and assessment with the Short Form 36 version 2 (SF-36) were recruited for repeat CMR, SF-36, and exercise test, if they had not had interval pulmonary valve replacement (PVR)...
October 2016: Pediatric Cardiology
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