[Rectal shielding for a Selectron-ring applicator system (HDR- and LDR-afterloading)].
In order to decrease the morbidity rate after combined radiotherapy of the cervix carcinoma, a tungsten shield 3 and 5 mm thick for the rectum has been developed by the authors which is applied with the ring and pin applicator of the Selectron unit (LDR- and HDR-afterloading). The isodose curves were measured in a plexiglas phantom, and the radiation dose at the reference points was determined by means of a ionization dosimeter. The phantom measurements were performed with the same arrangement of sources as applied in radiotherapy. The measurements showed a dose reduction at point Rmax of 33% (HDR) and 44% (LDR) with the tungsten shield 5 mm thick.
Universitätsklinik für Frauenheilkunde, Innsbruck.
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H
Hetzel
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Kamleitner
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M
McCoy
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Frommhold
D001918:Brachytherapy / Q000295:instrumentation* / Q000379:methods; D002277:Carcinoma / Q000532:radiotherapy; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008961:Models, Structural; D011832:Radiation Injuries / Q000517:prevention & control; D011835:Radiation Protection / Q000295:instrumentation*; D011879:Radiotherapy Dosage; D012007:Rectum; D014414:Tungsten; D002583:Uterine Cervical Neoplasms / Q000532:radiotherapy
D014414:Tungsten
Rektumabschirmung für ein Selectron-Ringapplikator-System (HDR- und LDR-Afterloading).