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WebThe radiation field and the light field must coincide to within ___% of the SID . Collimator test tool Penny test . The Light-field-radiation field congruency can be tested with: (2 things) ... Websource of the -ray beam (the focal spot) and the film surface.x Also known as source-image distance SID), this measurement( effects magnification, distortion and x-ray beam … tsmviss gear
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