MR-ANGIOGRAPHY OF THE RENAL-ARTERY - COMPARISON OF BREATH-HOLD 2-DIMENSIONAL PHASE-CONTRAST CINE TECHNIQUE WITH THE PHASED-ARRAY COIL AND BREATH-HOLD 2-DIMENSIONAL TIME-OF-FLIGHT TECHNIQUE WITH THE BODY COIL
T. Masui et al., MR-ANGIOGRAPHY OF THE RENAL-ARTERY - COMPARISON OF BREATH-HOLD 2-DIMENSIONAL PHASE-CONTRAST CINE TECHNIQUE WITH THE PHASED-ARRAY COIL AND BREATH-HOLD 2-DIMENSIONAL TIME-OF-FLIGHT TECHNIQUE WITH THE BODY COIL, European journal of radiology, 25(1), 1997, pp. 62-66
Breath-hold 2D phase-contrast (PC) cine MR angiography with a phased-a
rray coli and 2D time-of-flight (TOF) MR angiography were performed in
the renal arteries and their findings were compared. Breath-hold 2D t
hin slice PC and TOF MR angiography were performed in 10 normal volunt
eers for renal arteries. A PC technique with k-space segmentation was
utilized with the phased-array coil. A PC technique provided visualiza
tion of the renal artery more distally than a TOF technique (4.8 +/- 0
.5 cm vs. 3.7 +/- 0.8 cm). With cardiac triggering, distal renal arter
ies were well demonstrated in PC MR angiography. On PC images, up- or
downward movements of the mid to distal renal arteries with aortic pul
satility were recognized. The qualify of the images was better with th
e PC than with the TOF technique (3.4 vs. 2.7). The mid to distal port
ions of the renal arteries translationally move with aortic pulsatilit
y. To consistently visualize and evaluate them on MR angiography, card
iac triggering might he required to reduce the effects of pulsatile mo
tions of the renal artery in the use of a phased-array coil. (C), 1997
Elsevier Science Ireland Ltd.