Title :
Planimetric volumetry of the prostate: influence of the step size
Author :
Aarnink, R.G. ; Giesen, R.J.B. ; Huynen, A.L. ; de la Rosette, J.J.M.C.H. ; Debruyne, F.M.J. ; Wijkstra, H.
Author_Institution :
Dept. of Urology, Univ. Hospital Nijmegen, Netherlands
Abstract :
Planimetric volumetry is often used in clinical practice for accurate prostate volume determination. The prostate volume is determined by discretization of the 3D prostate shape. The area of the prostate is calculated in consecutive ultrasonographic cross-sections. The area is multiplied with the distance between the cross-sections and the total volume is determined by summation of all contributions. The accuracy of this method depends, among other things, on this distance. This paper describes influences of the distance on the accuracy of volume determination using a prostate model. This theoretical influence is compared to clinical prostate volume determinations for 56 patients using planimetric volumetry with different step sizes
Keywords :
biomedical ultrasonics; error analysis; integration; shape measurement; volume measurement; 3D prostate shape; accuracy; accurate prostate volume determination; clinical practice; consecutive ultrasonographic cross-sections; discretization; distance; planimetric volumetry; prostate; prostate area; prostate model; step size; total volume; urology; Ellipsoids; Error analysis; Hospitals; Image edge detection; In vivo; Medical treatment; Prostate cancer; Shape; Ultrasonography;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.412182
