[Detection of A-P shunt by MR angiography].
Magnetic Resonance Angiography using a time-of-flight method was performed on two cases with arterial-portal shunting (A-P shunt). Each case was examined both with and without presaturation applied above the diaphragms. Signal intensity in the portal vein on these cases decreased with presaturation. This presaturation normally eliminates signal from inflowing spins in the artery but never effect on that in portal vein. Therefore the decrease of signal intensity in the portal vein with presaturation indicates the arterial inflow to the portal vein.
Takahashi
T
T
Department of Radiology, Kyoto Prefectural University of Medicine.
Sato
O
O
Naruse
S
S
Ushijima
Y
Y
Nakamura
T
T
Yamada
K
K
Furuya
S
S
Tatei
T
T
Yamashita
M
M
Murakami
K
K
D001164:Arteriovenous Fistula / Q000175:diagnosis*; D006499:Hepatic Artery; D006801:Humans; D008279:Magnetic Resonance Imaging; D011169:Portal Vein