| 摘要 |
PCT No. PCT/DE96/00174 Sec. 371 Date Aug. 6, 1997 Sec. 102(e) Date Aug. 6, 1997 PCT Filed Feb. 1, 1996 PCT Pub. No. WO96/24859 PCT Pub. Date Aug. 15, 1996A process and measuring device for determining the tissue-equivalent dose in radiotherapy. First, the radiation dose is measured according to the process at a site by at least two sensors i and j. The sensors are designed such that the associated measuring signals Si and Sj display different energy dependency of the detection sensitivity to ionizing radiation, a dose-independent quotient Qij=Si/Sj being formed from this difference. The tissue-equivalent dose D is then calculated from this dose-independent value. The advantages of this process are that the sensor material does not have to be adapted to the tissue and can therefore be freely selected, and the tissue-equivalent dose is determined highly accurately. The measuring device comprises three parallel fiber-optic sensors disposed equidistant in a plane, the outer sensors being identical and differing from the central sensor by differing energy dependency of the detection sensitivity to ionizing radiation.
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