We measured directly the partial pressure of oxygen (pO 2) in new fibrosarcoma (NFSa) tumors grown in C3H/He mice using microcoaxial O 2 electrodes in vivo. The pO 2 in tumors was monitored after a single dose of X-ray or carbon-12 irradiation. After irradiation, tumor volume temporally shrinked, and pO 2 simultaneously increased. Carbon-12 irradiation reoxygenated tumors between the 1st and 9th day after the irradiation, while x-ray irradiation reoxygenated tumors between the 3rd and 8th day. We found that reoxygenation period after carbon-12 irradiation started earlier and continued longer than X-ray irradiation.
|Title of host publication||American Society of Mechanical Engineers, Bioengineering Division (Publication) BED|
|Number of pages||2|
|Publication status||Published - 1998|
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