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Simple experimentally derived algorithm for computer calculated dose rates associated with /sup 137/Cs gynecologic insertions

Journal Article:

Abstract

A simple mathematical algorithm is derived from experimental data for dose rates from /sup 137/Cs sources in a finite tissue equivalent medium corresponding to the female pelvis. An analytical expression for a point source of /sup 137/Cs along with a simple numerical integration routine allows for rapid as well as accurate dose rate calculations at points of interest for gynecologic insertions. When compared with theoretical models assuming an infinite unit density medium, the measured dose rates are found to be systematically lower at distances away from a single source; 5 per cent at 2 cm and 10 per cent at 7 cm along the transverse axis. Allowance in the program for print out of dose rates from individual sources to a given point and the feature of source strength modification allows for optimization in terms of increasing the difference in dose rate between reference treatment points and sensitive structures such as the bladder, rectum and colon.
Authors:
Wrede, D E; Dawalibi, H [1] 
  1. King Faisal Specialist Hospital and Research Centre, Department of Medical Physics. Riyadh (Saudi Arabia)
Publication Date:
Jan 01, 1980
Product Type:
Journal Article
Reference Number:
AIX-12-575525; EDB-81-018106
Resource Relation:
Journal Name: Acta Radiol.: Oncol., Radiat Phys., Biol.; (Sweden); Journal Volume: 19:1
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; 61 RADIATION PROTECTION AND DOSIMETRY; DOSE RATES; COMPUTER CALCULATIONS; RADIATION SOURCES; ALGORITHMS; CALIBRATION; CESIUM 137; CRITICAL ORGANS; DEPTH DOSE DISTRIBUTIONS; GYNECOLOGY; PELVIS; PHANTOMS; TISSUE-EQUIVALENT MATERIALS; WOMEN; ALKALI METAL ISOTOPES; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BODY; BODY AREAS; CESIUM ISOTOPES; FEMALES; ISOTOPES; MAMMALS; MAN; MATERIALS; MATHEMATICAL LOGIC; MEDICINE; MOCKUP; NUCLEI; ODD-EVEN NUCLEI; ORGANS; PRIMATES; RADIATION DOSE DISTRIBUTIONS; RADIOISOTOPES; SPATIAL DOSE DISTRIBUTIONS; STRUCTURAL MODELS; VERTEBRATES; YEARS LIVING RADIOISOTOPES; 550604* - Medicine- Unsealed Radionuclides in Therapy- (1980-); 655003 - Medical Physics- Dosimetry
OSTI ID:
6760593
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: AROND
Submitting Site:
INIS
Size:
Pages: 37-40
Announcement Date:

Journal Article:

Citation Formats

Wrede, D E, and Dawalibi, H. Simple experimentally derived algorithm for computer calculated dose rates associated with /sup 137/Cs gynecologic insertions. Sweden: N. p., 1980. Web.
Wrede, D E, & Dawalibi, H. Simple experimentally derived algorithm for computer calculated dose rates associated with /sup 137/Cs gynecologic insertions. Sweden.
Wrede, D E, and Dawalibi, H. 1980. "Simple experimentally derived algorithm for computer calculated dose rates associated with /sup 137/Cs gynecologic insertions." Sweden.
@misc{etde_6760593,
title = {Simple experimentally derived algorithm for computer calculated dose rates associated with /sup 137/Cs gynecologic insertions}
author = {Wrede, D E, and Dawalibi, H}
abstractNote = {A simple mathematical algorithm is derived from experimental data for dose rates from /sup 137/Cs sources in a finite tissue equivalent medium corresponding to the female pelvis. An analytical expression for a point source of /sup 137/Cs along with a simple numerical integration routine allows for rapid as well as accurate dose rate calculations at points of interest for gynecologic insertions. When compared with theoretical models assuming an infinite unit density medium, the measured dose rates are found to be systematically lower at distances away from a single source; 5 per cent at 2 cm and 10 per cent at 7 cm along the transverse axis. Allowance in the program for print out of dose rates from individual sources to a given point and the feature of source strength modification allows for optimization in terms of increasing the difference in dose rate between reference treatment points and sensitive structures such as the bladder, rectum and colon.}
journal = {Acta Radiol.: Oncol., Radiat Phys., Biol.; (Sweden)}
volume = {19:1}
journal type = {AC}
place = {Sweden}
year = {1980}
month = {Jan}
}