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Development and application of a dosimetric methodology of therapeutic X radiation beams using a tandem system; Desenvolvimento e aplicacao de metodologia dosimetrica de feixes terapeuticos de raios X com sistema tandem

Abstract

In radiotherapy the use of orthovoltage X radiation beams is still recommended; to obtain satisfactory results, a periodic control is necessary to check the performance of the ionization chambers and the radiation beams characteristics. This control is performed by using standard dosimetric procedures, as for example the determination of half-value layers and the absorbed dose rates. A Tandem system was established in this work using a pair of ionization chambers (a thimble type and a superficial type) used for measures in a medical institution, in substitution to the routine conventional procedure of determination of half-value layers using absorbers. The results obtained show the application of this method in dosimetric procedures of orthovoltage beams (radiotherapy) as a complement for a quality control program. (author)
Publication Date:
Jul 01, 2001
Product Type:
Thesis/Dissertation
Report Number:
INIS-BR-4170
Resource Relation:
Other Information: TH: Dissertacao (M.Sc.); 60 refs., figs., tabs
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CALIBRATION; CALIBRATION STANDARDS; ELECTROMETERS; EXPERIMENTAL DATA; GAMMA RADIATION; IONIZATION CHAMBERS; QUALITY CONTROL; RADIATION DOSES; X RADIATION
OSTI ID:
20943324
Research Organizations:
Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
TRN: BR0746713096797
Availability:
Available from INIS in electronic form
Submitting Site:
BRN
Size:
96 pages
Announcement Date:
Dec 13, 2007

Citation Formats

Sartoris, Carla Eri. Development and application of a dosimetric methodology of therapeutic X radiation beams using a tandem system; Desenvolvimento e aplicacao de metodologia dosimetrica de feixes terapeuticos de raios X com sistema tandem. Brazil: N. p., 2001. Web.
Sartoris, Carla Eri. Development and application of a dosimetric methodology of therapeutic X radiation beams using a tandem system; Desenvolvimento e aplicacao de metodologia dosimetrica de feixes terapeuticos de raios X com sistema tandem. Brazil.
Sartoris, Carla Eri. 2001. "Development and application of a dosimetric methodology of therapeutic X radiation beams using a tandem system; Desenvolvimento e aplicacao de metodologia dosimetrica de feixes terapeuticos de raios X com sistema tandem." Brazil.
@misc{etde_20943324,
title = {Development and application of a dosimetric methodology of therapeutic X radiation beams using a tandem system; Desenvolvimento e aplicacao de metodologia dosimetrica de feixes terapeuticos de raios X com sistema tandem}
author = {Sartoris, Carla Eri}
abstractNote = {In radiotherapy the use of orthovoltage X radiation beams is still recommended; to obtain satisfactory results, a periodic control is necessary to check the performance of the ionization chambers and the radiation beams characteristics. This control is performed by using standard dosimetric procedures, as for example the determination of half-value layers and the absorbed dose rates. A Tandem system was established in this work using a pair of ionization chambers (a thimble type and a superficial type) used for measures in a medical institution, in substitution to the routine conventional procedure of determination of half-value layers using absorbers. The results obtained show the application of this method in dosimetric procedures of orthovoltage beams (radiotherapy) as a complement for a quality control program. (author)}
place = {Brazil}
year = {2001}
month = {Jul}
}