Radiotherapy of the rhabdomyosarcoma R1H of the rat: recovery from radiation injury in tumour and skin.
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Radiotherapy of the rhabdomyosarcoma R1H of the rat: recovery from radiation injury in tumour and skin. / Würschmidt, F; Becker, S; Maurer, T; Omniczynski, M; Schelp, R; Vogler, H; Beck-Bornholdt, Hans-Peter.
in: RADIOTHER ONCOL, Jahrgang 23, Nr. 2, 2, 1992, S. 105-110.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Radiotherapy of the rhabdomyosarcoma R1H of the rat: recovery from radiation injury in tumour and skin.
AU - Würschmidt, F
AU - Becker, S
AU - Maurer, T
AU - Omniczynski, M
AU - Schelp, R
AU - Vogler, H
AU - Beck-Bornholdt, Hans-Peter
PY - 1992
Y1 - 1992
N2 - The response of the rhabdomyosarcoma R1H of the rat to fractionated irradiation has been reported to be almost independent of the dose per fraction in the range from 0.43 to 10 Gy. To elucidate whether recovery from radiation injury is impaired in fractionated irradiation or not, tumours were exposed on 5 days per week over 6 weeks either to a single daily dose or to two daily fractions separated by an interfraction interval of 2 h. Tumour response was assessed by net growth delay. Skin damage was scored for comparison. A significant reduction in tumour response (p less than 0.009) and skin damage (p less than 0.001) was observed when the daily dose was administered in a twice daily irradiation regimen, indicating that recovery from radiation injury does occur in the course of fractionated irradiation in our tumour system. A tumour response was almost independent of the dose per fraction for time intervals between fractions of at least 8 h, a possible explanation might be that recovery is compensated by improved reoxygenation.
AB - The response of the rhabdomyosarcoma R1H of the rat to fractionated irradiation has been reported to be almost independent of the dose per fraction in the range from 0.43 to 10 Gy. To elucidate whether recovery from radiation injury is impaired in fractionated irradiation or not, tumours were exposed on 5 days per week over 6 weeks either to a single daily dose or to two daily fractions separated by an interfraction interval of 2 h. Tumour response was assessed by net growth delay. Skin damage was scored for comparison. A significant reduction in tumour response (p less than 0.009) and skin damage (p less than 0.001) was observed when the daily dose was administered in a twice daily irradiation regimen, indicating that recovery from radiation injury does occur in the course of fractionated irradiation in our tumour system. A tumour response was almost independent of the dose per fraction for time intervals between fractions of at least 8 h, a possible explanation might be that recovery is compensated by improved reoxygenation.
M3 - SCORING: Zeitschriftenaufsatz
VL - 23
SP - 105
EP - 110
JO - RADIOTHER ONCOL
JF - RADIOTHER ONCOL
SN - 0167-8140
IS - 2
M1 - 2
ER -