A Fiber-Optic Twin Sensor for Dose Measurements in Radiation Therapy

Harald BUEKER; Friedrich W. HAESING; Frank PFEIFFER; Hermann–Joseph SCHMITZ

doi:10.1007/BF02936010

Harald BUEKER, Friedrich W. HAESING, Frank PFEIFFER, Hermann–Joseph SCHMITZ

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Keywords: fiber-optic sensors, dose measurement, ionizing radiation, in-vivo dosimetry, in-vivo sensors, radiation therapy

JOURNAL FREE ACCESS

1997 Volume 4 Issue 1A Pages 130-132

DOI https://doi.org/10.1007/BF02936010

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Abstract

The developed fiber-optic twin sensor allows in-vivo dose measurement in the tissue of the patie nt's body. It consists of two radiation-sensitive fibers. The radiation-induced attenuations of these fibers are used to determine the dose absorbed in tissue. The two signals have a linear dose response, but they depe nd differently on the energy of the ionizing radiation. Evaluation of the two sensor signals permits a nearly tissue-equivalent dose indication.

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