Published January 1980 | Version v1
Journal article

Comparioson of the effects of neutron and/or photon irradiation on spontaneous squamous-cell carcinoma in mice

  • 1. National Inst. of Radiological Sciences, Chiba, Japan

Description

The effect of 30-MeV D+ → Be NIRS cyclotron neutrons on a spontaneous NR-S1 squamous-cell carcinoma was studied. The TD50 (number of tumor cells required for transplantation in half the sites) and tumor growth delay time (TGD) were determined. The RBE of 200-kVp x rays at the 10% survival level was 1.9 for aerobic cells and 2.0 for hypoxic cells; the OER at the same level was 1.7. Tumor cells irradiated with neutrons were unable to repair potentially lethal damage, in contrast to x-irradiated tumor cells. The RBE of 50-MeV D+ → Be neutrons was inversely related to deuteron energy for hypoxic cells. The relationship between TGD and peak skin reaction indicated no benefit from mixed beams or 5 neutron doses

Additional details

Publishing Information

Journal Title
Radiology
Journal Volume
134
Journal Issue
1
Series
Radiology.
Journal Page Range
219-225
ISSN
0033-8419