[99mTc-MIBI used for diagnosis of portal hypertension: an experimental study].
The authors investigated the relationship between portal-systemic shunting and portal pressure in 16 CCl4-induced cirrhotic wistar rats by 99mTc-MIBI photography of heart and liver. Based on radio-counts taken at 30 minutes after 99mTc-MIBI was given per rectum 8 rats or medial clonic vein 8 rats, heart radio-counts/liver radio-counts (H/L) and portal-systemic shunting index (SI) were recorded. It was shown that 1. H/L and SI of the two cirrhotic groups were greater than those of normals (P < 0.001); 2. H/L in cirrhotic rats by rectum 99mTc-MIBI administration was more closely related to free portal pressure (FPP, r = 0.83, P < 0.01) than in those by venous route (r = 0.74, P < 0.05) and its regressive formation FPP (kPa) = 0. 24 + 4.06 (H/L) was deduced and used to calculate portal pressure of cirrhotic rats. The very good relationship between the calculated and measured portal venous pressure was shown in a group of 12 cirrhotic rats (r = 0.85, P < 0.01). These findings suggested that the rectum administration of 99mTc-MIBI may be a useful method in calculating portal pressure and portal-systemic shunting in portal hypertensive patients.
Zhang
Y
Y
People's Hospital, Beijing Medical University.
Qi
G
G
Lui
J
J
D000285:Administration, Rectal; D000818:Animals; D002251:Carbon Tetrachloride; D006321:Heart / Q000000981:diagnostic imaging; D006975:Hypertension, Portal / Q000000981:diagnostic imaging* / Q000209:etiology; D007275:Injections, Intravenous; D008099:Liver / Q000000981:diagnostic imaging*; D008106:Liver Cirrhosis, Experimental / Q000150:complications; D008297:Male; D017082:Portal Pressure; D011877:Radionuclide Imaging; D051381:Rats; D017208:Rats, Wistar; D017256:Technetium Tc 99m Sestamibi
D017256:Technetium Tc 99m Sestamibi; D002251:Carbon Tetrachloride