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>Assessment of Parameters of Digital X-Ray Detectors Using the Method of Exposure of the Working Area of the Detector to Uniform X-Ray Radiation
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Assessment of Parameters of Digital X-Ray Detectors Using the Method of Exposure of the Working Area of the Detector to Uniform X-Ray Radiation
Until recently, only subjective methods of assessment of parameters of X-ray detectors and image quality were used. According to normative documentation, X-ray contrast objects are placed in the input plane of X-ray detectors during tests [1, 5]. The resulting image of the test objects is evaluated by a group of experts. This evaluation has some disadvantages. X-ray test objects require a specific quality of X-ray radiation. Deviation from the required radiation quality may cause substantial error. The geometry and settings of tests should be in conformity with normative documentation. Test objects should be manufactured precisely and made of materials of high purity grade. Therefore, the test objects are rather expensive.Subjective estimates are characterized by low accuracy and reproducibility. In addition, such tests are laborious and non-operative. Such tests should be performed by skilled personnel and should not be used in full volume for operative control in clinics (because of high labor consumption and absence of a complete set of test objects).Special kits of tissue-equivalent phantoms are used
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