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https://www.readbyqxmd.com/read/28210769/preprocedural-risk-assessment-prior-to-ppvi-with-cmr-and-cardiac-ct
#1
Ladonna Malone, Brian Fonseca, Thomas Fagan, Jane Gralla, Neil Wilson, Micheal DiMaria, Uyen Truong, Lorna P Browne
Percutaneous pulmonary valve intervention (PPVI) is a less invasive and less costly approach to pulmonary valve replacement compared with the surgical alternative. Potential complications of PPVI include coronary compression and pulmonary arterial injury/rupture. The purpose of this study was to characterize the morphological risk factors for PPVI complication with cardiac MRI and cardiac CTA. A retrospective review of 88 PPVI procedures was performed. 44 patients had preprocedural cardiac MRIs or CTAs available for review...
February 16, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28173819/cardiovascular-magnetic-resonance-evaluation-of-symptomatic-severe-aortic-stenosis-association-of-circumferential-myocardial-strain-and-mortality
#2
Tarique Al Musa, Akhlaque Uddin, Peter P Swoboda, Timothy A Fairbairn, Laura E Dobson, Anvesha Singh, Pankaj Garg, Christopher D Steadman, Bara Erhayiem, Ananth Kidambi, David P Ripley, Adam K McDiarmid, Philip Haaf, Daniel J Blackman, Sven Plein, Gerald P McCann, John P Greenwood
BACKGROUND: It is unknown whether circumferential strain is associated with prognosis after treatment of aortic stenosis (AS). We aimed to characterise strain in severe AS, using myocardial tagging cardiovascular magnetic resonance (CMR), prior to and following Transcatheter Aortic Valve Implantation (TAVI) and Surgical Aortic Valve Replacement (SAVR), and determine whether abnormalities in strain were associated with outcome. METHODS: CMR was performed pre- and 6 m post-intervention in 98 patients (52 TAVI, 46 SAVR; 77 ± 8 years) with severe AS...
February 8, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28153348/cardiac-magnetic-resonance-imaging-versus-transthoracic-echocardiography-for-prediction-of-outcomes-in-chronic-aortic-or-mitral-regurgitation
#3
Andrew W Harris, Eric V Krieger, Minkyu Kim, Peter J Cawley, David S Owens, Christian Hamilton-Craig, Jeffrey Maki, Catherine M Otto
In subjects with aortic regurgitation (AR) or mitral regurgitation (MR), transthoracic echocardiography (TTE) is recommended for surveillance. Few prospective studies have directly compared the ability of TTE and cardiac magnetic resonance (CMR) to predict clinical outcomes in AR and MR. We hypothesized that, given its higher reproducibility, CMR would predict the need for valve surgery or heart failure (HF) hospitalization better than TTE. Quantitative TTE and CMR were performed on the same day for 51 subjects: 29 with chronic AR and 22 with chronic, primary MR for quantification of valve regurgitation...
January 5, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28129367/differences-in-aortic-valve-and-left-ventricular-parameters-related-to-the-severity-of-myocardial-fibrosis-in-patients-with-severe-aortic-valve-stenosis
#4
Inyoung Song, Sung Min Ko, Jeong Geun Yi, Hyun Keun Chee, Jun Seok Kim
OBJECTIVE: This study investigated the morphological and functional characteristics of the aortic valve and the left ventricular (LV) systolic functional parameters and myocardial mass related to the severity of myocardial fibrosis (MF) in patients with severe aortic valve stenosis (AS). MATERIALS AND METHODS: We retrospectively enrolled 81 patients (48 men; mean age: 59±12 years) with severe AS who underwent transthoracic echocardiography (TTE), cardiac computed tomography (CCT), and cardiovascular magnetic resonance (CMR) within 1 month and subsequent aortic valve surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28127033/advanced-imaging-in-valvular-heart-disease
#5
REVIEW
Jeroen J Bax, Victoria Delgado
Although echocardiography remains the mainstay imaging technique for the evaluation of patients with valvular heart disease (VHD), innovations in noninvasive imaging in the past few years have provided new insights into the pathophysiology and quantification of VHD, early detection of left ventricular (LV) dysfunction, and advanced prognostic assessment. The severity grading of valve dysfunction has been refined with the use of Doppler echocardiography, cardiac magnetic resonance (CMR), and CT imaging. LV ejection fraction remains an important criterion when deciding whether patients should be referred for surgery...
January 27, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28117280/post-procedural-myocardial-infarction-following-surgical-and-trans-catheter-aortic-valve-replacement
#6
Laura E Dobson, Tarique A Musa, Akhlaque Uddin, Timothy A Fairbairn, Peter P Swoboda, David P Ripley, Pankaj Garg, Betsy Evans, Christopher J Malkin, Daniel J Blackman, Sven Plein, John P Greenwood
AIMS: Myocardial injury assessed using cardiac biomarker release is ubiquitous following surgical (SAVR) and trans-catheter aortic valve implantation (TAVI), preventing accurate discrimination between focal myocardial infarction (MI) and global injury. Cardiovascular magnetic resonance (CMR) late gadolinium enhancement (LGE) imaging was used to compare rates of new MI following SAVR and TAVI. METHODS AND RESULTS: Identical CMR scans were obtained at baseline and 6m post- procedure in ninety-six patients undergoing SAVR (n=39) and TAVI (n=57)...
January 25, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28110433/a-comprehensive-analysis-of-cardiac-valve-plane-displacement-in-healthy-adults-age-stratified-normal-values-by-cardiac-magnetic-resonance
#7
Marco M Ochs, Thomas Fritz, Florian André, Johannes Riffel, Derliz Mereles, Matthias Müller-Hennessen, Evangelos Giannitsis, Hugo A Katus, Matthias G Friedrich, Sebastian J Buss
Cardiac valve plane displacement (CVPD) reflects longitudinal LV function. The purpose of the present study was to determine regional heterogeneity of CVPD in healthy adults to provide normal values by cardiac magnetic resonance (CMR). We measured the anterior aortic plane systolic excursion (AAPSE); the anterior, anterolateral, inferolateral, inferior, and inferoseptal mitral annular plane systolic excursion (MAPSE); and the lateral tricuspid annulus plane systolic excursion (TAPSE). Systolic excursion was measured as the distance from peak end-diastolic to peak end-sysstolic annular position (peak-to-peak) in cine images acquired in 2-, 3- and 4-chamber views...
January 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28043462/right-ventricular-outflow-tract-reconstruction-with-a-polytetrafluoroethylene-monocusp-valve-a-20-year-experience
#8
Mohineesh Kumar, Mark W Turrentine, Mark D Rodefeld, Teresa Bell, John W Brown
In patients with tetralogy of Fallot (TOF), pulmonary atresia (PA), and other congenital right ventricular outflow tract (RVOT) malformations, polytetrafluoroethylene (PTFE) monocusp outflow tract patches (MOTP) relieve obstruction and provide pulmonary valve competence. The purpose of this study was to determine whether our PTFE-MOTP was an acceptable short- and mid-term remedy for patients with TOF or PA as assessed by freedom from severe pulmonary regurgitation and freedom from reoperation. From 1994-2014, 171 patients (mean age 1...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28017384/myocardial-fibrosis-and-cardiac-decompensation-in-aortic-stenosis
#9
Calvin W L Chin, Russell J Everett, Jacek Kwiecinski, Alex T Vesey, Emily Yeung, Gavin Esson, William Jenkins, Maria Koo, Saeed Mirsadraee, Audrey C White, Alan G Japp, Sanjay K Prasad, Scott Semple, David E Newby, Marc R Dweck
OBJECTIVES: Cardiac magnetic resonance (CMR) was used to investigate the extracellular compartment and myocardial fibrosis in patients with aortic stenosis, as well as their association with other measures of left ventricular decompensation and mortality. BACKGROUND: Progressive myocardial fibrosis drives the transition from hypertrophy to heart failure in aortic stenosis. Diffuse fibrosis is associated with extracellular volume expansion that is detectable by T1 mapping, whereas late gadolinium enhancement (LGE) detects replacement fibrosis...
December 8, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28005218/impact-of-surgical-pulmonary-valve-replacement-on-ventricular-mechanics-in-children-with-repaired-tetralogy-of-fallot
#10
D Yim, L Mertens, C T Morgan, M K Friedberg, L Grosse-Wortmann, A Dragulescu
Impaired ventricular myocardial mechanics are observed in patients with repaired tetralogy of Fallot (rTOF). Effects of pulmonary valve replacement (PVR) on ventricular remodeling are controversial. The objective was to assess the impact of surgical PVR on ventricular mechanics in pediatric patients after rTOF. Speckle-tracking analysis was performed in 50 rTOF children, aged 12.6 ± 3.3 years, pre-operatively and 14.5 ± 2.2 months post-PVR. Early post-operative studies 2.2 ± 0.6 months post-PVR were performed in 28 patients...
December 22, 2016: International Journal of Cardiovascular Imaging
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
#11
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...
February 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/27861188/controversies-in-quantification-of-mitral-valve-regurgitation-role-of-cardiac-magnetic-resonance-imaging
#12
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...
March 2017: 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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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