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Single- and double-plane iridium-192 interstitial implants: Implantation guidelines and dosimetry

Journal Article · · Med. Phys.; (United States)
DOI:https://doi.org/10.1118/1.595308· OSTI ID:6016100
Computerized dosimetric studies of single- and double-plane iridium-192 (Ir-192) planar implants were performed. With respect to dose homogeneity, we found that the optimal source and ribbon separation for single-plane implants was 1.0 cm. For double-plane implants, the preferred ribbon and plane separation was 1.5 cm, maintaining a 1-cm separation for the sources. Using these separations, standard dose rate curves for single- and double-plane Ir-192 implants were generated by computer calculations. These standard curves are useful for quickly and fairly accurately estimating the dose from any size planar implant, without requiring more time-consuming individual computer dosimetry. We believe that the curves will prove to be of practical clinical value to physicists and radiotherapists.
Research Organization:
Department of Radiation Therapy, Kaiser--Permanente Medical Center, Los Angeles, California 90027
OSTI ID:
6016100
Journal Information:
Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 10:4; ISSN MPHYA
Country of Publication:
United States
Language:
English