Prostatic thermoluminescent dosimeter analysis in a patient treated with 18 MV X rays through a prosthetic hip

Journal Article · Fri Jan 15 04:00:00 EST 1993 · International Journal of Radiation Oncology, Biology and Physics; (United States)

DOI:https://doi.org/10.1016/0360-3016(93)90358-3· OSTI ID:6613860

Hazuka, M B; Stroud, D N; Adams, J; Ibbott, G S; Kinzie, J J ^[1]

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1. Univ. of Colorado, Denver (United States)

External beam radiation therapy with high energy photon beams through hip protheses has been shown to cause dose inhomogeneities for target volumes in the pelvis. In this work, measurements of dose using thermoluminescent dosimetry were compared with dose calculations from a computerized treatment planning system in a patient with prostatic carcinoma and a cobalt-chromium-molybdenum hip prosthesis. A 39% decrement in dose at isocenter was demonstrated for an 18 MV photon beam passing through the prosthesis. A discrepancy of only 3.1% was shown between measured and calculated dose when the tissue-maximum ratio (TMR) method of heterogeneity correction was used. However, it is recognized that several sources of error are possible when heterogeneity corrections are performed for high density prostheses and these are discussed below. The results of this work stress the importance of accurate data for use with the ratio of TMR's' algorithm in order that accurate treatment planning can be performed.

• OSTI ID: 6613860
• Journal Information: International Journal of Radiation Oncology, Biology and Physics; (United States), Journal Name: International Journal of Radiation Oncology, Biology and Physics; (United States) Vol. 25:2; ISSN IOBPD3; ISSN 0360-3016
• Country of Publication: United States
• Language: English

Related Subjects

550603 -- Medicine-- External Radiation in Therapy-- (1980-)
560101* -- Biomedical Sciences
Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-)
61 RADIATION PROTECTION AND DOSIMETRY
62 RADIOLOGY AND NUCLEAR MEDICINE
BODY
BODY AREAS
CARCINOMAS
DISEASES
DOSIMETRY
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
MEASURING METHODS
MEDICAL SUPPLIES
MEDICINE
NEOPLASMS
NUCLEAR MEDICINE
OPTIMIZATION
PELVIS
PROSTHESES
RADIATIONS
RADIOLOGY
RADIOTHERAPY
THERAPY
THERMOLUMINESCENT DOSIMETRY
X RADIATION