Published June 1986 | Version v1
Journal article Metadata-only

Trouble in source driving system of a 60Co teletherapy unit

Creators

  • 1. Seoul National Univ. (Republic of Korea). Coll. of Medicine

Description

An asymmetry in dose profile of a 60Co teletherapy unit was found by means of water-phantom measurement. The reason of that trouble was confirmed to be the abnormal ON position of the source, which is resulted from the high friction between contiguous surfaces of the spring for driving the source to OFF position. Lubrication in the spring improved the mobility a little, but was not a radical repair. The radical repair was to replace the old spring by new one. Periodic maintenance for source driving system and periodic measurement of field aymmetry are required for prevention of abnormal ON position of 60Co source. (Author)

Additional details

Publishing Information

Journal Title
Radiat. Prot.
Journal Volume
11
Journal Issue
1
Series
Radiat. Prot.
Journal Page Range
65-69
CODEN
BBHCD

INIS

Country of Publication
Korea, Republic of
Country of Input or Organization
Korea, Republic of
INIS RN
18052854
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
COBALT 60; RADIATION DOSE DISTRIBUTIONS; RADIATION SOURCES; RADIOTHERAPY
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COBALT ISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MEDICINE; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; THERAPY; YEARS LIVING RADIOISOTOPES