Abstract |
Reports on clinical study of Cf-252 pelvic brachytherapy are reviewed and show that complication frequency is low. Low dose rate (LDR) neutron brachytherapy has been shown to be effective against cervical and advanced pelvic cancers; and produces 5 year cures without a high frequency of normal tissue complications. This is attributed to a high relative biological effectiveness (RBE) for the bulky, hypoxic tumor which along with an oxygen enhancement ratio (OER) advantage and dose-rate independent effects, produces rapid tumor regression and good local tumor control. Adjacent normal tissues which are oxygenated have lower RBE values than that of hypoxic tumors. Cf-252 brachytherapy increases the dose differential, therapeutic gain and the probability of local tumor control, since the high RBE of Cf-252 for hypoxic tumor is much less in normal tissues. Cf-252 radiation concentrated in the tumor, and for this reason, has had much fewer attendant normal tissue complications compared to neutron beam therapy.
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Authors | Y Maruyama, J M Feola, J L Beach |
Journal | International journal of radiation oncology, biology, physics
(Int J Radiat Oncol Biol Phys)
Vol. 9
Issue 11
Pg. 1715-21
(Nov 1983)
ISSN: 0360-3016 [Print] United States |
PMID | 6358159
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, Non-P.H.S., Review)
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Chemical References |
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Topics |
- Brachytherapy
(methods)
- Californium
(administration & dosage)
- Female
- Humans
- Neutrons
- Oxygen
- Pelvic Neoplasms
(radiotherapy)
- Radiotherapy Dosage
- Relative Biological Effectiveness
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