The motion artifact suppression technique (MAST) in magnetic resonance imaging: clinical results.
The Motion Artifact Suppression Technique (MAST) is a method which uses a series of gradient echos that are computed to cancel velocity, acceleration and pulsatility components of involuntary motion in MR imaging. A total of 916 patient studies were performed over a nine month period using MAST sequences with a TE 40, 60, 80, 100, 120, and 26/112. There was considerable improvement in long TR, long TE images. Cerebrospinal fluid flow artifacts were reduced. Body and spine images had reduced flow and respiratory artifacts. Spin rephasing in blood vessels caused increase intraluminal signal. This might be useful for cardiovascular imaging.
Colletti
P M
PM
Department of Radiology, University of Southern California, School of Medicine, Los Angeles.
Raval
J K
JK
Benson
R C
RC
Pattany
P M
PM
Zee
C S
CS
Boswell
W D
WD
Norris
S L
SL
Ralls
P W
PW
Segall
H D
HD
D001775:Blood Circulation; D002555:Cerebrospinal Fluid / Q000502:physiology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009068:Movement; D011673:Pulsatile Flow