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Radiat Prot Dosimetry. 2014 Dec;162(3):421-6. doi: 10.1093/rpd/nct339. Epub 2013 Dec 18.

Monte Carlo simulation-based feasibility study of a dose-area product meter built into a collimator for diagnostic X-ray.

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Department of Radiological Science, Korea University, Seoul 136-703, Republic of Korea.
Radiation Protection and Safety Section, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea.
Department of Radiological Science, Baekseok Culture University, Chungchungnam-do 303-705, Republic of Korea.
Department of Radiological Science, Korea University, Seoul 136-703, Republic of Korea


According to the International Electro-technical Commission, manufacturers of X-ray equipment should indicate the number of radiation doses to which a patient can be exposed. Dose-area product (DAP) meters are readily available devices that provide dose indices. Collimators are the most commonly employed radiation beam restrictors in X-ray equipment. DAP meters are attached to the lower surface of a collimator. A DAP meter consists of a chamber and electronics. This separation makes it difficult for operators to maintain the accuracy of a DAP meter. Developing a comprehensive system that has a DAP meter in place of a mirror in the collimator would be effective for measuring, recording the dose and maintaining the quality of the DAP meter. This study was conducted through experimental measurements and a simulation. A DAP meter built into a collimator was found to be feasible when its reading was multiplied by a correction factor.

[Indexed for MEDLINE]

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