[Comparative study of pulmonary magnetic resonance angiography (MRA)].
Imaging was performed using a 1.0 Tesla superconducting MR system with a body coil. Two-dimensional(2D) turbo FLASH sequence and/or three-dimensional(3D) FISP sequence were carried out in 46 volunteers with 113 pulmonary MRA. The total MRAs were divided into 4 groups and analysed. The results showed: After Gd-DTPA was injected, the signal-to-noise ratio(SNR) of pulmonary 2D- and 3D-TOF MRA was increased in 46 normal pulmonary MR angiography cases(P < 0.01); the number of left and right pulmonary artery divisions identified was much greater than that before Gd-DTPA injection both in 2D- and 3D-MOF(except lingual segment of left lobe). It is suggested that Gd-DTPA may markedly promote the efficiency of pulmonary MRA.
Li
G
G
Department of Radiology, Xiangya Hospital, Hunan Medical University, Changsha 410008.
Zeng
J Z
JZ
Wang
X Y
XY
Wang
R W
RW
Li
J L
JL
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000473:pathology; D011897:Random Allocation
D003287:Contrast Media; D019786:Gadolinium DTPA