Dose attenuation through a titanium alloy hip prosthesis.
The problem of dose perturbation due to hip prostheses during pelvic irradiation can be significant. Dose attenuation by a commonly used titanium alloy hip prosthesis was measured. Depending on the energy of the radiation beam and the thickness along the prosthesis, the attenuation was between 32% and 64%. This attenuation effect should be considered in treatment planning, especially in a patient with bilateral hip prostheses and when undergoing treatment for prostate cancer where the tumor typically lies between prostheses.
Eng
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Department of Radiology, University of Texas Health Science Center at San Antonio, USA. tyeng@pol.net
D000497:Alloys; D006622:Hip Prosthesis; D006801:Humans; D011474:Prosthesis Design; D011879:Radiotherapy Dosage; D014025:Titanium
D000497:Alloys; D014025:Titanium