منابع مشابه
Robust myocardial T2 and T2* mapping at 3T
PURPOSE Intramyocardial hemorrhage and area at risk are both prognostic markers in acute myocardial infarction (AMI). Myocardial T2 and T2 * mapping have been used to detect such tissue changes at 1.5T but these techniques are challenging at 3.0T due to additional susceptibility variation. We studied T2 and T2 * myocardial mapping techniques at 3.0T on a system employing B1 shimming and compare...
متن کاملOptimising acquisition parameters for myocardial T2 mapping using T2-prep at 3T
Background T2 mapping using T2-prepared SSFP at 1.5T has been shown to be sensitive to oedema in acute myocardial infarction[1]. At 3T, other studies have addressed the problem of the T2 prep module’s sensitivity to the increased B1 inhomogeneity[2]. However, a second problem is that the lengthened T1 at 3T can reduce the contrast between normal and oedematous myocardium, as well as introducing...
متن کاملSingle-breathhold Myocardial T2 and T2* Quantification in Normal Volunteer Subjects at 3T
H. GUO, J. S. CHEUNG, D. KIM, P-L. KHONG, G. M. BRITTENHAM, AND E. X. WU LABORATORY OF BIOMEDICAL IMAGING AND SIGNAL PROCESSING, THE UNIVERSITY OF HONG KONG, HONG KONG, CHINA, PEOPLE'S REPUBLIC OF, DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING, THE UNIVERSITY OF HONG KONG, HONG KONG, CHINA, PEOPLE'S REPUBLIC OF, DEPARTMENT OF RADIOLOGY, NEW YORK UNIVERSITY SCHOOL OF MEDICINE, NEW YORK, UN...
متن کاملSelf-navigated three-dimensional cardiac T2 mapping at 3T
Background Cardiac T2 mapping using a variable T2 preparation module (T2Prep) has recently gained attention for its ability to quantify the extent of edema (Giri, JCMR 2009). Due to time constraints, the T2 maps are commonly acquired as one or several two-dimensional slices, while the underlying pathology has a three-dimensional (3D) structure. The next logical step would therefore be to exploi...
متن کاملSegment-based myocardial T1 and T2 mapping at 3T: feasibility and normal values
Methods Sixty healthy volunteers (30 males / 30 females, 20 in each age group: 20-39 years, 40-59 years, 60-80 years) underwent T1 and T2 mapping of the left ventricle in 3 short axis slices. For T2 maps, 3 single shot steady state free precession (SSFP) images with different T2 preparation times (0, 24, 55ms) were acquired (TE 1.0 ms, TR 2.4 ms, voxel 1.9 x 1.9x6 mm). For T1 maps, Modified Loo...
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ژورنال
عنوان ژورنال: Journal of Cardiovascular Magnetic Resonance
سال: 2012
ISSN: 1532-429X
DOI: 10.1186/1532-429x-14-s1-p306