Continuous three-dimensional radiation dosimetry in tissue-equivalent phantoms using electron paramagnetic resonance in L-. cap alpha. -alanine

Journal Article · Wed Jul 01 00:00:00 EDT 1987 · Med. Phys.; (United States)

OSTI ID:6460574

Wielopolski, L; Maryanski, M; Ciesielski, B; Forman, A; Reinstein, L E; Meek, A G

A new tissue-equivalent phantom material has been developed which also acts as a dosimeter. The new phantom material has a similar elemental composition to that of soft tissue and has a density 1.1 g/cm/sup 3/. The phantom has an agar-gel base, and contains crystallized L-..cap alpha..-alanine which traps radiation-induced free radicals. Samples from the phantom were analyzed by an electron paramagnetic resonance (EPR) spectrometer and the intensity of the EPR signal was related to the absorbed dose. When calibrated, the phantom material acts as a dosimeter, with applications in radiation therapy.

• Research Organization: Brookhaven National Laboratory, Medical Department, Upton, New York 11973
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6460574
• Journal Information: Med. Phys.; (United States), Vol. 14:4
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
DOSIMETRY
TISSUE-EQUIVALENT MATERIALS
PHANTOMS
RADIATION DOSE DISTRIBUTIONS
AGAR
ALANINE-L
ELECTRON SPIN RESONANCE
RADICALS
TRAPPING
ALANINE-ALPHA
ALANINES
AMINO ACIDS
CARBOHYDRATES
CARBOXYLIC ACIDS
COLLOIDS
DISPERSIONS
MAGNETIC RESONANCE
MATERIALS
MOCKUP
ORGANIC ACIDS
ORGANIC COMPOUNDS
POLYSACCHARIDES
RESONANCE
SACCHARIDES
STRUCTURAL MODELS
655003* - Medical Physics- Dosimetry