CT-based optimized planning for transperineal prostate implant with customized template.
A computerized planning procedure has been developed for CT-guided transperineal prostate implants. The segment for custom planning of perineal needle orientations allows placement of I-125 seeds in the entire prostate gland while avoiding the pubic bones. Least-squares optimization (LSO) is used to obtain the seed-loading pattern along the needles. The optimized seed distribution produces a better fit between treatment and target volumes than that obtained from our previous manual technique. Also, the present semi-automatic technique reduces planning time by about a factor of 10 compared to that of the manual approach.
Roy
J N
JN
Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY 10021.
Wallner
K E
KE
Chiu-Tsao
S T
ST
Anderson
L L
LL
Ling
C C
CC
D001918:Brachytherapy / Q000295:instrumentation*; D006801:Humans; D008297:Male; D011471:Prostatic Neoplasms / Q000532:radiotherapy*; D011880:Radiotherapy Planning, Computer-Assisted; D014057:Tomography, X-Ray Computed