نتایج جستجو برای: حرکتی cmr

تعداد نتایج: 14132  

2015
Chunhua Wang Jie Zheng Jiayu Sun Yuqing Wang Rui Xia Qian Yin Wei Chen Jichun Liao Bing Zhang Fabao Gao

Background Hypertrophic cardiomyopathy (HCM) is a genetic disease characterized by heterogeneous clinical symptoms and able to be visualized by cardiac magnetic resonance (CMR). Late gadolinium enhancement (LGE) represents myocardial fibrosis. There is still a challenge for HCM patients with contrast agent contraindication. T1rho CMR has been reported to determine fibrosis in myocardial infarct...

Journal: :AJNR. American journal of neuroradiology 2013
A Murphy S P Symons J Hopyan R I Aviv

BACKGROUND AND PURPOSE Recanalization may not result in better clinical outcomes after ischemic stroke. We determined the incidence and significant predictors of CMR, defined as CT angiographic recanalization and a good clinical outcome, after IV-rtPA in acute ischemic stroke. A CMR score was devised and tested. MATERIALS AND METHODS One hundred twenty-six consecutive patients with anterior c...

Journal: :JACC: Cardiovascular Imaging 2020

2016
Kelly Jarvis Marleen Vonder Alex J Barker Susanne Schnell Michael Rose James Carr Joshua D Robinson Michael Markl Cynthia K Rigsby

BACKGROUND Peak velocity measurements are used to evaluate the significance of stenosis in patients with transposition of the great arteries after the arterial switch operation (TGA after ASO). 4D flow cardiovascular magnetic resonance (CMR) provides 3-directional velocity encoding and full volumetric coverage of the great arteries and may thus improve the hemodynamic evaluation in these patien...

2008
W P Bandettini A E Arai

Cardiovascular magnetic resonance (CMR) is an evolving technology with growing indications within the clinical cardiology setting. This review article summarises the current clinical applications of CMR. The focus is on the use of CMR in the diagnosis of coronary artery disease with summaries of validation literature in CMR viability, myocardial perfusion, and dobutamine CMR. Practical uses of ...

2011
Francisco Leyva Paul WX Foley Shajil Chalil Karim Ratib Russell EA Smith Frits Prinzen Angelo Auricchio

BACKGROUND Myocardial scarring at the LV pacing site leads to incomplete resynchronization and a suboptimal symptomatic response to CRT. We sought to determine whether the use of late gadolinium cardiovascular magnetic resonance (LGE-CMR) to guide left ventricular (LV) lead deployment influences the long-term outcome of cardiac resynchronization therapy (CRT). METHODS 559 patients with heart ...

2013
Julio Garcia Romain Capoulade Florent Le Ven Emmanuel Gaillard Lyes Kadem Philippe Pibarot Éric Larose

BACKGROUND Valve effective orifice area EOA and transvalvular mean pressure gradient (MPG) are the most frequently used parameters to assess aortic stenosis (AS) severity. However, MPG measured by cardiovascular magnetic resonance (CMR) may differ from the one measured by transthoracic Doppler-echocardiography (TTE). The objectives of this study were: 1) to identify the factors responsible for ...

2017
Juliana Serafim da Silveira Matthew Smyke Adam V. Rich Yingmin Liu Ning Jin Debbie Scandling Jennifer A. Dickerson Carlos E. Rochitte Subha V. Raman Lee C. Potter Rizwan Ahmad Orlando P. Simonetti

BACKGROUND Aortic stenosis (AS) is a common valvular disorder, and disease severity is currently assessed by transthoracic echocardiography (TTE). However, TTE results can be inconsistent in some patients, thus other diagnostic modalities such as cardiovascular magnetic resonance (CMR) are demanded. While traditional unidirectional phase-contrast CMR (1Dir PC-CMR) underestimates velocity if the...

Journal: :Journal of the American College of Cardiology 2008
Jonathan W Weinsaft Han W Kim Dipan J Shah Igor Klem Anna Lisa Crowley Rhoda Brosnan Olga G James Manesh R Patel John Heitner Michele Parker Eric J Velazquez Charles Steenbergen Robert M Judd Raymond J Kim

OBJECTIVES This study sought to assess the prevalence and markers of left ventricular (LV) thrombus among patients with systolic dysfunction. BACKGROUND Prior studies have yielded discordant findings regarding prevalence and markers of LV thrombus. Delayed-enhancement cardiovascular magnetic resonance (DE-CMR) identifies thrombus on the basis of tissue characteristics rather than just anatomi...

Journal: :Circulation. Cardiovascular imaging 2012
James A White Nowell M Fine Lorne Gula Raymond Yee Allan Skanes George Klein Peter Leong-Sit Heather Warren Terry Thompson Maria Drangova Andrew Krahn

BACKGROUND Sudden cardiac death (SCD) and sustained monomorphic ventricular tachycardia (SMVT) are frequently associated with prior or acute myocardial injury. Cardiovascular magnetic resonance (CMR) provides morphological, functional, and tissue characterization in a single setting. We sought to evaluate the diagnostic yield of CMR-based imaging versus non-CMR-based imaging in patients with re...

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