PZT FOR MEASURING ENERGY FLUENCE RATE OF X-RAY USED IN SUPERFICIAL CANCER THERAPY

摘要

A PZT detector is used for measuring the energy fluence rate of X-ray pulses produced by superficial cancer therapy equipment (orthovoltage range). The instrument consists of a pyroelectric sensor, a low-noise high-sensitivity, current-to-voltage converter, a microcontroller and a digital display. The main element of the instrument is a pyroelectric sensor which consists of an iron-doped lead zirconate titanate ceramic disk. The response of the instrument exhibits a nonlinear relationship with the energy fluence rate of the radiation and the precision is better than 3%. The equipment is inexpensive, rugged, simple to construct, and has good long-term stability.View full textDownload full textKeywordsenergy fluence rate, orthovoltage range, pyroelectric sensor, radiation, superficial cancer, X-rayRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10739141003707675