Published February 1983
| Version v1
Journal article
A simple equivalent tissue-air ratio method for calculating absorbed dose in a heterogeneous medium
Description
Density correction factors for 60Co gamma rays and 8-MV x rays were measured with an ionization chamber in water-equivalent phantoms containing simulated lung or bone inhomogeneities larger or smaller than the beam (beam sizes, 5 x 5 to 30 x 30 cm). Measurements were compared with values calculated from the effective SSD method, the generalized Batho power law method, and a simplified equivalent tissue-air-ratio (SETAR) method. The results indicate that the SETAR method seems adequate for most clinical applications
Additional details
Publishing Information
- Journal Title
- Radiology
- Journal Volume
- 146
- Journal Issue
- 2
- Series
- Radiology.
- Journal Page Range
- 527-529
- ISSN
- 0033-8419
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 15002570
- Subject category
- S07: ISOTOPES AND RADIATION SOURCES;
- Descriptors DEI
- COBALT 60; CORRECTIONS; GAMMA DOSIMETRY; GAMMA RADIATION; IONIZATION CHAMBERS; PHANTOMS; PLANNING; RADIATION DOSES; RADIOTHERAPY; TISSUE-EQUIVALENT DETECTORS; X RADIATION; X-RAY DOSIMETRY
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COBALT ISOTOPES; DOSIMETRY; ELECTROMAGNETIC RADIATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MEASURING INSTRUMENTS; MEDICINE; MINUTES LIVING RADIOISOTOPES; MOCKUP; NUCLEI; ODD-ODD NUCLEI; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; STRUCTURAL MODELS; THERAPY; YEARS LIVING RADIOISOTOPES