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Organ and effective dose evaluation in diagnostic radiology based on in-phantom dose measurements with novel photodiode-dosemeters.

Authors :
Kawaura C
Aoyama T
Koyama S
Achiwa M
Mori M
Source :
Radiation protection dosimetry [Radiat Prot Dosimetry] 2006; Vol. 118 (4), pp. 421-30. Date of Electronic Publication: 2006 Jan 26.
Publication Year :
2006

Abstract

Organ and the effective doses of patients undergoing clinical X ray examinations of chest and abdomen were evaluated with an anthropomorphic phantom and a new dosimetry system. The system was comprised of 34 pin photodiode dosemeters placed in/on particular tissues or organs of the anthropomorphic phantom, where the tissues and organs are defined by the International Commission on Radiological Protection (ICRP) to estimate the effective doses. Dosemeter signals were acquired on a personal computer directly, and converted into absorbed doses, from which the organ and the effective doses were evaluated on the computer. Our study showed that organ doses ranged from <0.01 to 0.72 mGy in routine X-ray radiography of chest and of abdomen and from 0.07 to 55.91 mGy in routine computed tomography (CT) examinations with current multi-slice CT scanners. The effective dose observed in the chest CT examination was approximately 300 times higher than that in chest radiography.

Details

Language :
English
ISSN :
0144-8420
Volume :
118
Issue :
4
Database :
MEDLINE
Journal :
Radiation protection dosimetry
Publication Type :
Academic Journal
Accession number :
16439515
Full Text :
https://doi.org/10.1093/rpd/nci372