A MOSFET dosimeter built on an off-the-shelf component for in vivo radiotherapy applications

Author

Siebel, O.F. ; Pereira, J.G. ; Schneider, M.C. ; Galup-Montoro, Carlos

Author_Institution

Dept. of Electr. Eng., Fed. Univ. of Santa Catarina (UFSC), Florianopolis, Brazil

fYear

2014

fDate

25-28 Feb. 2014

Firstpage

1

Lastpage

4

Abstract

In this paper we detail the development of a new in vivo MOSFET dosimeter built on the CD4007, a popular off-the-shelf CMOS circuit. The dosimeter, which is aimed at radiotherapy applications, combines a simple and accurate readout procedure with a small, low-cost and cable-free sensor. The linearity (97.5%) and radiation sensitivity (6.8 mV/Gy) of this dosimeter were tested using X-ray (6 MV).

Keywords

CMOS integrated circuits; MOSFET; dosimeters; dosimetry; radiation therapy; CD4007; X-ray; accurate readout procedure; cable-free sensor; in vivo MOSFET dosimeter; in vivo radiotherapy application; linearity; low-cost sensor; off-the-shelf CMOS circuit; off-the-shelf component; radiation sensitivity; voltage 6 MV; In vivo; MOSFET; Sensitivity; Temperature measurement; Temperature sensors; Threshold voltage; MOSFET dosimeter; in vivo MOSFET dosimeter; radiotherapy; threshold voltage extractor circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (LASCAS), 2014 IEEE 5th Latin American Symposium on

Conference_Location

Santiago

Print_ISBN

978-1-4799-2506-3

Type

conf

DOI

10.1109/LASCAS.2014.6820261

Filename

6820261