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Technical Developments |
1 From the Department of RadiologyMRI, New York University Medical Center, 530 First Ave, HCC Basement, New York, NY 10016 (V.S.L., D.R., P.L., J.C.W.); and Siemens Medical Systems, Chicago, Ill (J.M.B., O.P.S.). Received July 5, 2001; revision requested August 22; revision received September 26; accepted October 22. Address correspondence to V.S.L. (e-mail: lee@mri.med.nyu.edu).
In 12 healthy volunteers and eight patients with cardiac disease, cine magnetic resonance (MR) imaging in the heart was performed with real-time true fast imaging with steady-state precession (FISP), which permitted evaluation of the entire left ventricle in one breath hold (91 msec per frame, 13 frames per section position, nine short-axis section positions per breath hold). Contrast-to-noise ratios (CNRs) and left ventricular mass and function measurements with this technique were compared in all subjects with single-section true FISP imaging and, in the volunteers only, with segmented fast low-angle shot (FLASH) MR imaging. Myocardium-to-blood CNR was significantly higher for both true FISP sequences compared with the FLASH sequence. Measurements of resting left ventricular function with real-time true FISP imaging were comparable with those derived from a series of separate breath-hold single-section true FISP acquisitions.
© RSNA, 2002
Index terms: Heart, MR, 51.121412, 51.121416 Heart, ventricles, 51.92 Heart, volume, 51.92 Magnetic resonance (MR), cine study, 51.121412, 51.121416 Magnetic resonance (MR), pulse sequences, 51.121412, 51.121416 Magnetic resonance (MR), volume measurement, 51.121412, 51.121416
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