Evaluating the performance of a MOSFET dosimeter at diagnostic X-ray energies for interventional radiology

For reducing the risk of skin injury during interventional radiology (IR) procedures, it has been suggested that physicians track patients’ exposure doses. The metal-oxide semiconductor field effect transistor (MOSFET) dosimeter is designed to measure patient exposure dose during radiotherapy applic...

Full description

Saved in:
Bibliographic Details
Published in:Radiological physics and technology 2009-01, Vol.2 (1), p.58-61
Main Authors: Chida, Koichi, Inaba, Youhei, Masuyama, Hanako, Yanagawa, Isao, Mori, Issei, Saito, Haruo, Maruoka, Shin, Zuguchi, Masayuki
Format: Article
Language:English
Subjects:
Feasibility Studies
Imaging
Medical and Radiation Physics
Medicine
Medicine & Public Health
Metals - chemistry
Nuclear Medicine
Oxides - chemistry
Radiation Dosage
Radiography, Interventional
Radiology
Radiometry - methods
Radiotherapy
Skin - radiation effects
Tomography, X-Ray Computed
Transistors, Electronic
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:For reducing the risk of skin injury during interventional radiology (IR) procedures, it has been suggested that physicians track patients’ exposure doses. The metal-oxide semiconductor field effect transistor (MOSFET) dosimeter is designed to measure patient exposure dose during radiotherapy applications at megavoltage photon energies. Our purpose in this study was to evaluate the feasibility of using a MOSFET dosimeter (OneDose system) to measure patients’ skin dose during exposure to diagnostic X-ray energies used in IR. The response of the OneDose system was almost constant at diagnostic X-ray energies, although the sensitivity was higher than that at megavoltage photon energies. We found that the angular dependence was minimal at diagnostic X-ray energies. The OneDose is almost invisible on X-ray images at diagnostic energies. Furthermore, the OneDose is easy to handle. The OneDose sensor performs well at diagnostic X-ray energies, although real-time measurements are not feasible. Thus, the OneDose system may prove useful in measuring patient exposure dose during IR.
ISSN:1865-0333
1865-0341
DOI:10.1007/s12194-008-0044-z