5/18/2023 0 Comments Dark noise digital x rayMoreover, the clinical image quality evaluation is eventually performed in a similar subjective way, which provides a link to clinical practice. In addition, the contrast detail analysis, which is one of the recommended subjective tests, was also included in the study because it is part of noise level evaluations. The advantage of the results from quantitative tests is the fact that objective comparisons can be done with other similar studies. Others were system linearity and auto-ranging response, evaluation of noise level erasure thoroughness. Quantitative tests included IP dark noise and uniformity, and dose (exposure) indicator calibration accuracy. In this work, five quantitative methods and one subjective method were applied. Twelve tests are recommended for acceptance testing and quality control of CR systems in AAPM Report 93. Such accepting testing methods for CR systems have been developed The objective of this study was to evaluate the performance status of three clinical CR systems using six tests recommended in American Association of Physicists in Medicine (AAPM) Report 93. In order to realize the digital benefits fully, it is necessary to perform the acceptance tests for quality assurance purposes. In developing countries or small radiology departments, the CR technology can be of first choice than the DR technology because of low running costs. For CR systems, the image plate (IP) must first be read using the laser scanner before the image is obtained. The DR systems are also known for their high image quality images at low patient doses. In DR systems, the image is obtained immediately after the x-ray examination of the patient in real-time manner, which expedite the patient workflow. ![]() ![]() ![]() The advantages of CR and DR systems over screen-film-based technology are well acknowledged. Computed radiography (CR) is now a firmly established digital imaging modality along with digital radiography (DR) systems.
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