Computer programs for output and depth dose from hyperbolic equations
Journal Article
·
· Med. Phys.; (United States)
A compact and accurate equation has been developed that describes the output field size over the range from 4 x 4 to 35 x 35 cm2. An accuracy of +/- 0.2% has been demonstated for teletherapy machines with energies from 250 kVp to 6 MV. The same accuracy down to a depth of at least 30 cm. The relationship is described by a hyperbola whose x and y axes are displaced by corresponding values X0 and Y0 producing the equation y = Y0 - C/(X0 + x), where y = output and x = field size. By substituting three separate values for y and x into three simultaneous equations, values for Y0, X0 and c can be derived.
- OSTI ID:
- 5628506
- Journal Information:
- Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 8:1; ISSN MPHYA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurements of dose from secondary radiation outside a treatment field
Improved lung dose calculation using tissue-maximum ratios in the Batho correction
Output factors and dose calculations for blocked x-ray fields
Journal Article
·
Mon Aug 01 00:00:00 EDT 1983
· Int. J. Radiat. Oncol., Biol. Phys.; (United States)
·
OSTI ID:5744347
Improved lung dose calculation using tissue-maximum ratios in the Batho correction
Journal Article
·
· Med. Phys.; (United States)
·
OSTI ID:6340654
Output factors and dose calculations for blocked x-ray fields
Journal Article
·
Thu May 01 00:00:00 EDT 1986
· Med. Phys.; (United States)
·
OSTI ID:5870980
Related Subjects
550603 -- Medicine-- External Radiation in Therapy-- (1980-)
560161* -- Radionuclide Effects
Kinetics
& Toxicology-- Man
62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
COMPUTER CODES
DEPTH DOSE DISTRIBUTIONS
DOSES
EXTERNAL IRRADIATION
IRRADIATION
MEDICINE
NUCLEAR MEDICINE
PATIENTS
RADIATION DOSE DISTRIBUTIONS
RADIATION DOSES
RADIOLOGY
RADIOTHERAPY
SPATIAL DOSE DISTRIBUTIONS
THERAPY
560161* -- Radionuclide Effects
Kinetics
& Toxicology-- Man
62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
COMPUTER CODES
DEPTH DOSE DISTRIBUTIONS
DOSES
EXTERNAL IRRADIATION
IRRADIATION
MEDICINE
NUCLEAR MEDICINE
PATIENTS
RADIATION DOSE DISTRIBUTIONS
RADIATION DOSES
RADIOLOGY
RADIOTHERAPY
SPATIAL DOSE DISTRIBUTIONS
THERAPY