Premium
Black blood dual phase turbo FLASH MR imaging of the heart
Author(s) -
Sinha Shantanu,
Sinha Usha
Publication year - 1996
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880060312
Subject(s) - image quality , flip angle , cardiac cycle , materials science , biomedical engineering , harp , physics , computer science , nuclear medicine , magnetic resonance imaging , medicine , artificial intelligence , image (mathematics) , radiology , cardiology , quantum mechanics
An MR imaging scheme for dark blood cardiac images acquired simultaneously in e∼d diastolic and end systolic phases, in breath‐hold times, is presented. The sequence consists of a magnetization preparation period followed by two segmented k‐space acquisitions. Image quality was investigated with respect to different sequence parameters (optimal values are indicated in brackets): ( a ) echo time (TE)/repetition time (TR)/flip angle (FA) (3/6.2 msec/20°); ( b ) number of lines/segments in the acquisition window (11 lines/segment); ( c ) location of acquisition windows and inversion time; and ( d ) thickness of slice „reinverted” during preparation (1.53 times the acquisition slice thickness). The image quality of the basal slices at end systole was critically dependent on the last parameter. High quality short axis views of the heart, with good blood signal suppression, were acquired with the optimized sequence on four volunteers from apex to base at two phases in 10 breath‐holds.