Influence of hip prostheses on high energy photon dose distributions.
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.
Sibata
C H
CH
Cleveland Clinic Foundation, OH 44195.
Mota
H C
HC
Higgins
P D
PD
Gaisser
D
D
Saxton
J P
JP
Shin
K H
KH
D000497:Alloys; D006622:Hip Prosthesis; D006801:Humans; D010386:Pelvic Neoplasms / Q000532:radiotherapy*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D011881:Radiotherapy, Computer-Assisted; D011882:Radiotherapy, High-Energy
D000497:Alloys