Measurements of relative depth doses and Cerenkov light using a scintillating fiber-optic dosimeter with Co-60 radiotherapy source

作者：Jang Kyoung Won; Yoo Wook Jae; Moon Jinsoo; Han Ki Tek; Park Jang Yeon; Lee Bongsoo^*

来源：Applied Radiation and Isotopes, 2012, 70(1): 274-277.

DOI：10.1016/j.apradiso.2011.08.005

• Fiber-optic dosimeter
• Co-60
• Organic scintillator
• Radiotherapy

In this study, we fabricated a scintillating fiber-optic dosimeter, which consists of an organic scintillator and a plastic optical fiber, for radiotherapy dosimetry. To select an adequate kind and length of scintillator for gamma-rays generated from a Co-60 source, scintillating light from various kinds and lengths of organic scintillators is measured. Using a scintillating fiber-optic dosimeter, the gamma-rays generated from a Co-60 therapy unit are measured and relative doses are obtained according to the field size of the gamma-ray beam and the depth in a water phantom. Also. Cerenkov light generated by the interactions of primary or secondary electrons and the plastic optical fiber is measured with different field sizes and depths of a water phantom using a background optical fiber.

• 出版日期2012-1