Semiautomated renal region-of-interest selection method: validation in a dog model
Hornof, W.J.; Cowgill, L.D.; Conrad, G.R.; Fisher, P.
American Journal of Physiologic Imaging 3(3): 133-138
1988
ISSN/ISBN: 0885-8276 PMID: 3056464 Document Number: 308730
A successful method of automated region-of-interest (ROI) selection by polar edge search for use in technetium-99m-diethylenetriaminepentacetate (99mTc-DTPA) renography is presented in a dog model. The accuracy of the resultant ROI was tested by comparing renal uptake within the ROI to simultaneously monitored arterial 99mTc-DTPA concentration. The automatically selected ROI resulted in renal uptake curves that better matched arterial clearance than either systematically larger and smaller ROIs or a manually chosen ROI.