THE RELATIVE BIOLOGICAL EFFECTIVENESS OF 22-Mevp X-RAYS, COBALT-60 GAMMA RAYS, AND 200-kvep X-RAYS. VIII. DETERMINED BY THE GROWTH CAPACITY OF TUMOR CELLS IN VITRO

Technical Report · Sun Dec 31 23:00:00 EST 1961

OSTI ID:4646949

Humphrey, R M; Sinclair, W K

A determination of the RBE of Co/sup 60/ gamma rays and 22-Mevp x rays versus 200-Kvcp x rays was made with growth capacity of Ehrlich ascites tumor cells in vitro as the biological test object. A series of 7 experiments, in which the growth was scored at 4 days after irradiation and compared to the growth of the nonirradiated controls, was conducted. The RBE values were derived from the slopes of the response curves for each individual experiment. The average RBE's are 0.86 for Co/sup 60/ gamma rays versus 200-Kvcp x rays; 0.86 for 22-Mevp x rays versus 200-Kvcp x rays, and 1.03 for 22-Mevp x rays versus Co/ sup 60/ gamma rays. (auth)

• Research Organization: Texas. Univ., Houston. M.D. Anderson Hospital and Tumor Inst.; Argonne National Lab., Ill.
• NSA Number: NSA-17-040549
• OSTI ID: 4646949
• Report Number(s): TID-18210
• Country of Publication: United States
• Language: English

Related Subjects

BIOLOGY
BIOLOGY AND MEDICINE
COBALT 60
DIAGRAMS
EFFICIENCY
EHRLICH ASCITES
ENERGY RANGE
GAMMA RADIATION
IRRADIATION
NUMERICALS
QUANTITATIVE ANALYSIS
RADIATION DOSES
RADIATION EFFECTS
RADIATION INJURIES
RADIATION SOURCES
RADIOBIOLOGY
RBE
STANDARDS
SUSPENSIONS
TESTING
TISSUES
TUMORS
X RADIATION