:Effect of Incident Exposure on Phantom Visibility
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概要
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For screen-film mammography, an American College of Radiology (ACR) accreditation phantom is used for assessing image quality. This phantom contains features such a fibers, speck groups, and masses. In this study, digital images of an ACR accreditation phantom were obtained using a full-field digital mammography system at various incident exposures. Digital images of the ACR phantom were viewed by eight radiological technologists to assess the effect of incident exposure on the visibility of simulated lesions. It was found that the visibility of fibers, specks, and masses improved as the incident exposure (average glandular dose) increased. However, observer performance for visualizing fibers and specks was approximately constant for average glandular doses exceeding 1.9 mGy, or 1.5 mGy for masses. Our findings therefore imply that use of an ACR phantom is unsatisfactory within this range of average glandular dose for assessment of image quality in full digital mammography.
- 日本乳癌検診学会の論文
日本乳癌検診学会 | 論文
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