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Titolo:
SINGLE-SHOT VERSUS INTERLEAVED ECHO-PLANAR MR-IMAGING - APPLICATION TO VISUALIZATION OF CARDIAC-VALVE LEAFLETS
Autore:
DAVIS CP; MCKINNON GC; DEBATIN JF; DUEWELL S; VONSCHULTHESS GK;
Indirizzi:
UNIV ZURICH HOSP,DEPT MED RADIOL,RAMISTR 100 CH-8091 ZURICH SWITZERLAND UNIV ZURICH HOSP,DEPT MED RADIOL CH-8091 ZURICH SWITZERLAND
Titolo Testata:
Journal of magnetic resonance imaging
fascicolo: 1, volume: 5, anno: 1995,
pagine: 107 - 112
SICI:
1053-1807(1995)5:1<107:SVIEM->2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Keywords:
HEART; HEART, VALVES; IMAGE PROCESSING; PULSE SEQUENCES; RAPID IMAGING;
Tipo documento:
Note
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
C.P. Davis et al., "SINGLE-SHOT VERSUS INTERLEAVED ECHO-PLANAR MR-IMAGING - APPLICATION TO VISUALIZATION OF CARDIAC-VALVE LEAFLETS", Journal of magnetic resonance imaging, 5(1), 1995, pp. 107-112

Abstract

Visualization of the cardiac valves with standard magnetic resonance (MR) imaging is not adequate because of long acquisition times. Echo-planar imaging (EPI) can, however, be performed with a temporal resolution (30-50 msec) comparable to that of echocardiography. The authors evaluated the feasibility of real-time imaging of cardiac valve motion with ultrafast MR techniques, Eight healthy volunteers and three patients with mitral stenosis and regurgitation were studied with a 1.5-T whole-body imager, Two different EPI sequences were assessed: a standard single-shot gradient-echo EPI (GEPI) sequence and a fast imaging technique based on multiple-shot EPI with interleaved k-space acquisition(IGEPI). Fat-suppressed images with an in-plane resolution of 3.7 x 3.7 mm were obtained equally spaced through the cardiac cycle, Half-k-space acquisition was used, Morphologic evaluation was superior with IGEPI, owing to the better intracavitary signal homogeneity (P<.01), andthe mitral valve leaflets were easier to identify on systolic images,IGEPI provided adequate valve visibility in all three patients.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 09:24:09