Subclavian MR arteriography: reduction of susceptibility artifact with short echo time and dilute gadopentetate dimeglumine.
At arterial phase gadolinium-enhanced magnetic resonance (MR) angiography, artifactual stenosis of the subclavian artery is sometimes seen adjacent to the subclavian vein on the side of the contrast material injection. Experiments in phantoms and in 19 patients showed increased artifact with longer echo time and higher concentration of injected contrast material. An effective method to substantially decrease this susceptibility artifact was threefold dilution of gadopentetate dimeglumine and use of a short echo time (1 msec).
Neimatallah
M A
MA
Department of Radiology, University of Michigan, Ann Arbor, USA.
Chenevert
T L
TL
Carlos
R C
RC
Londy
F J
FJ
Dong
Q
Q
Prince
M R
MR
Kim
H M
HM
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016477:Artifacts; D002648:Child; D002675:Child, Preschool; D003287:Contrast Media / Q000008:administration & dosage*; D005260:Female; D019786:Gadolinium DTPA / Q000008:administration & dosage; D006801:Humans; D007223:Infant; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D019047:Phantoms, Imaging; D013348:Subclavian Artery / Q000033:anatomy & histology*; D013350:Subclavian Vein / Q000033:anatomy & histology
D003287:Contrast Media; D019786:Gadolinium DTPA