title: Experimental analysis of a novel and low-cost pin photodiode dosimetry system for diagnostic radiology.
abstract: Silicon PIN photodiode has recently found broad and exciting applications in the ionizing radiation dosimetry. In this study a compact and novel dosimetry system using a commercially available PIN photodiode (BPW34) has been experimentally tested for diagnostic radiology. The system was evaluated with clinical beams routinely used for diagnostic radiology and calibrated using a secondary reference standard. Measured dose with PIN photodiode (Air Kerma) varied from 10 to 430 μGy for tube voltages from 40 to 100 kVp and tube current from 0.4 to 40 mAs. The minimum detectable organ dose was estimated to be 10 μGy with 20% uncertainty. Results showed a linear correlation between the PIN photodiode readout and dose measured with standard dosimeters spanning doses received. The present dosimetry system having advantages of suitable sensitivity with immediate readout of dose values, low cost, and portability could be used as an alternative to passive dosimetry system such as thermoluminescent dosimeter for dose measurements in diagnostic radiology.
authors.affiliation: Department of Energy Systems Engineering, Energy Research Institute, University of Kashan, Kashan, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Nazififard
authors.affiliation: Seoul National University, 1 Gwanak Ro, Gwanak Gu, Seoul 151-744, South Korea.
authors.forename: Kune Y
authors.initials: KY
authors.lastname: Suh
authors.affiliation: Department of Energy Systems Engineering, Energy Research Institute, University of Kashan, Kashan, Iran.
authors.forename: Afshin
authors.initials: A
authors.lastname: Mahmoudieh
mesh_terms: D011859:Radiography; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*