Parameters obtained by hepatobiliary scintigraphy have significant correlation with biochemical factors early after liver transplantation.

BACKGROUND: Early postoperative hepatobiliary scintigraphy after liver transplantation is performed worldwide, but data on its significance for graft function are currently limited. PURPOSE: To examine the correlation between the result of early postoperative hepatobiliary scintigraphy and pre- and postoperative biochemical parameters in liver transplantation (LTx) patients. MATERIAL AND METHODS: Six parameters of hepatobiliary scintigraphy using (99m)Tc mebrofenin were statistically analyzed in 108 LTx patients: 1) half-life of the activity of elimination of mebrofenin from the blood; 2) total clearance of mebrofenin from the blood due to all possible routes; 3) half-life of the activity due to liver uptake; 4) clearance of mebrofenin from the blood due to liver uptake; 5) time to maximal uptake in the liver; and 6) the hepatic extraction fraction (HEF) and biochemical data. Analysis between patients with preoperative normal liver function, familial amyloid polyneuropathy (FAP), and end-stage liver disease (non-FAP) was also performed. RESULTS: Univariate and multivariate analysis revealed that total bilirubin postoperative day 3 correlated with all three scintigraphic parameters, and peak aspartate aminotransferase and alanine aminotransferase correlated with HEF. The analysis between patients with FAP and non-FAP revealed no significant difference of scintigraphic data between the two groups. CONCLUSION: A significant correlation between early postoperative scintigraphic results and biochemical parameters was demonstrated.

[Experience on clinical application of positron emission tomography with a new radiopharmaceutical preparation sodium 11C-butyrate in differential diagnosis of pathological volume in brain formation]. / Opyt klinicheskogo primeneniia pozitronnoi émissionnoi tomografii s novym radiofarmatsevticheskim preparatov 11C-butiratom natriia v differentsial'noi diagnostike ob"emnykh obrazovanii golovnogo mozga.

The study was aimed to investigate the possibilities of the application of a new radiopharmaceutical--"Sodium butyrate, [1-(11)C]" (11C-Butyrate) for differential diagnosis of pathological volume brain formations. Positron emission tomography (PET) ("Ecat Exact 47", Siemens) of the brain was performed in 24 patients (14 male & 10 female, aged 19-56). The scanning was carried out as static scan 4-5 min after intravenous administration of 250-350 Mbq 11C-Butyrate and proceeded within 15-20 min. In addition PET with 18F-FDG was performed in all patients. The data had been verified histologically and morphologically. In 15 out of 24 patients the brain malignant tumor has been discovered, in 4 patients--benign tumors, in 5--postoperative cysts. Results of the studies showed that the ratio tumor/normal tissue in case of 11C-Butyrate and 18F-FDG application proved to be comparable for all studied hystological types of tumors. Malignant tumors in these cases had been visualized as a hot sports-fokci of increased uptake 11C-Butyrate (ratio > 1). The obtained data testify to the possibility of 11C-Butyrate application for differential diagnosis of the pathological volumic brain formation.

[Application of new radiopharmaceutical "Sodium 11c-butyrate" and positron emission tomography in patients with coronary artery disease]. / Primenenie pozitronnoi émissionnoi tomografii s novym diofarmatsevticheskim preparatom 11C-butirat natriia dlia otsenki sostoianiia miokarda u patsientom s IBS.

UNLABELLED: The aim of this study was to examine the diagnostic value of Sodium 11C-Butyrate (11C-Butyrate) in assessing perfusion and oxydative metabolism in patients with coronary artery disease (CAD). 41 patients (39 male and 9 female, mean age 48 +/- 11) with CAD were investigated. PET-scans were performed twice: at 2-7 min and 25-31 min after i.v. injection of 250-400 MBq 11C-Butyrate. Regional perfusion was evaluated by the uptake of radioactivity in the myocardium at the first scan, intensity of beta-oxidation--by decreasing the uptake level at the second scan. RESULTS: Myocardium of the left ventricle was good visualized at the first scan. It was demonstrated fast elimination of radioactivity in segments with normal oxidative metabolism of 11C-Butyrate at the second scan. Fixed defects were seen in the scar segments both at first and second scans. Decreased uptake of 11C-Butyrate at the first scan and diminished rate of agent elimination caused by depressed beta-oxidation at the second scan were revealed in ischemic segments. CONCLUSION: Application of PET with 11C-Butyrate in patients with CAD allows estimate hypoperfused segments, evaluate heart oxidative metabolism and provides differential diagnosis of scar and ischemia.