Influence of hip prostheses on high energy photon dose distributions.
basic_science · Level V
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Abstract
Radiotherapy treatment of patients having a hip prosthesis is a common problem facing dosimetrists and physicists when the treatment plan requires irradiation of the pelvic area. To quantify the perturbation of these devices, attenuation studies were done with 6 and 18 MV photon beams using various hip prostheses models with varying size and composition. These studies have shown that an attenuation of as much as 50% can be found in a single beam profile under the prosthesis. We have studied the capability of a dose planning system to predict the transmission of these devices as compared with measurements.
Medical subject headings
- Hip Prosthesis
- Pelvic Neoplasms
- Radiotherapy Planning, Computer-Assisted
- Radiotherapy, Computer-Assisted