Factor analysis in successive hepatobiliary imaging of native and transplant livers.
A young male suffering from fulminant hepatic failure of unknown origin had an auxiliary partial orthotopic liver transplantation performed. The aim of the present study was to test the performance of factor analysis of medical image sequences (FAMIS) in the post-transplantation monitoring of the graft and native liver functions.


METHODS
Four successive hepatobiliary studies within 63 days following transplantation using 99mTc-mebrofenin were performed (on days 13,20,34,63). The 60 one-minute dynamic series were subjected to two successive FAMIS procedures.


RESULTS
For all studies, except the first, FAMIS was able to extract three factor couples (factor images and factors or curves) those of the native liver, the graft liver and the biliary region. The factors time evolution in uptake and excretion components showed the correlations between clinical status and scintigraphic results and helped interpretation of biochemical tests.


CONCLUSIONS
The possible utility of systematic liver transplant monitoring by radionuclide hepatobiliary imaging in identification of complications requiring medical or surgical intervention in graft livers was demonstrated. Furthermore, our study showed the functional recovery potential of the native liver in patients suffering from fulminant hepatitis.
Petras
S
S
INSERM U66, CHU Pitie-Salpêtrierè, Paris, France.
Aurengo
A
A
Le
D
D
Di Paola
M
M
Jeanguillaume
C
C
Galle
P
P
D000293:Adolescent; D000814:Aniline Compounds; D005163:Factor Analysis, Statistical; D005998:Glycine; D006084:Graft Rejection / Q000000981:diagnostic imaging; D006501:Hepatic Encephalopathy / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D007098:Imino Acids; D008099:Liver / Q000000981:diagnostic imaging*; D008100:Liver Abscess / Q000000981:diagnostic imaging; D016031:Liver Transplantation / Q000000981:diagnostic imaging* / Q000379:methods; D008297:Male; D015609:Organotechnetium Compounds; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D012086:Reoperation; D013997:Time Factors
D000814:Aniline Compounds; D007098:Imino Acids; D015609:Organotechnetium Compounds; C034837:technetium Tc 99m mebrofenin; D005998:Glycine