-transparent.png){kind=logo}
The ratio of hepatic arterial-to-portal venous blood flow can be determined from the analysis of a first-pass bolus through the liver by a number of techniques. This study examines the validity of four radiotracer techniques in an animal model. Thirty-four flow studies (3 mCi 99mTc-DTPA/study) were performed in seven anesthetized pigs. Images were acquired for 200 sec and time-activity curves were generated from lung, liver and kidney ROIs. These curves were analyzed using a slope-based (HPI), a height-based (mHAR) and two deconvolution-based methods employing exponential or gamma variate fits. There was an excellent correlation (r greater than 0.9) between results obtained with flow probes and the radiotracer techniques, with the exception of the HPI technique (r = 0.75). The mHAR and deconvolution techniques were inaccurate at very low and high arterial flows, due respectively to noise limitations and hemodynamic instability in the animal. Nevertheless, these techniques appear to be the most promising for routine clinical use.
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
December 1981,
The Journal of surgical research,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
January 1971,
Angiology,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
September 1972,
Surgery,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
May 1983,
Radiology,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
January 1996,
HPB surgery : a world journal of hepatic, pancreatic and biliary surgery,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
April 2005,
Liver international : official journal of the International Association for the Study of the Liver,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
October 1981,
Radiology,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
August 1992,
The Journal of trauma,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
April 1988,
Journal of nuclear medicine : official publication, Society of Nuclear Medicine,
M K O'Connor, and
R F Krom, and
E G Carton, and
L Sanchez-Urdazpal, and
J E Juni, and
D M Ferguson, and
R F Wiesner
November 1981,
American journal of surgery,
