Determination of absorbed dose in a proton beam for purposes of charged-particle radiation therapy. [160 MeV protons]

Journal Article · Sun Jul 01 04:00:00 EDT 1979 · Radiat. Res.; (United States)

DOI:https://doi.org/10.2307/3575020· OSTI ID:5678630

Verhey, L J ^[1]; Koehler, A M; McDonald, J C; Goitein, M; Ma, I C; Schneider, R J; Wagner, M

---

1. Massachusetts General Hospital, Boston

Four methods are described by which absorbed dose has been measured in a proton beam extracted from the 160-MeV Harvard cyclotron. The standard dosimetry, used to determine doses for patient treatments, is based upon an absolute measurement of particle flux using a Faraday cup. Measurements have also been made using a parallel-plate ionization chamber; a thimble ionization chamber carying a /sup 60/Co calibration traceable to NBS; and a tissue-equivalent calorimeter. The calorimeter, which provides an independent check of the dosimetry, agreed with the standard dosimetry at five widely different depths within a range from 0.8 to 2.6%.

• OSTI ID: 5678630
• Journal Information: Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 79:1; ISSN RAREA
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
654001 -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
655002* -- Medical Physics-- Radiation Source Calibration & Standardization
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
BEAMS
CALIBRATION
DOSES
DOSIMETRY
ENERGY RANGE
MEASURING INSTRUMENTS
MEDICINE
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MEDICINE
NUCLEON BEAMS
PARTICLE BEAMS
PROTON BEAMS
PROTON DOSIMETRY
RADIATION DETECTORS
RADIATION DOSES
RADIOLOGY
RADIOTHERAPY
THERAPY
TISSUE-EQUIVALENT DETECTORS