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KMID : 0357520080310020177
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Journal of Radiological Science and Technology
2008 Volume.31 No. 2 p.177 ~ p.182
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A Study on the Exposure Parameter and the Patient Dose for Digital Radiography System in Dae Goo
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Cho Kwang-Ho
Kang Yeong-Han
Kang Young-Han
Kim Boo-Soon
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Abstract
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Digital imaging for general rediography has many advantages over the film/screen systems, including a wider dynamic range and the ability to manipulate the images produced. The wider range means that acceptable images may by acquired at a range of dose levels, and therefore repeat exposures can be reduced. Digital imaging can result in the over use of radiation, however, because there is a tendency can be reduced. Digital imaging can result in the over use of radiation, however, because there is a tendency for images to be acquired at too high a dose. We investigated the actual exposure dose conditions on general radiography and a questionnaire survey was conducted with radiotechnologiest at medical institutions using digital radiology system. As a results, the dose of exposure was not controlled with patient’s figure and dose optimization but was controlled by worker’s convenience and image quality. Radio-technologiests often set up the exposure dose regardless of patient figure and body part to be examined. Many organizations, such as the International Commission on Radiological Protection, recommend to keep the dose as low as possible. In addition, they strongly recommend to keep the optimal but minimal dosage by proper training programs and constant quality control, including frequent patient dose evaluations and education.
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KEYWORD
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Digital radiography system, dynamic range, exposure dose
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