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  • Title: [The visual method for inspecting film processing in accordance with Section 16 of the German X-ray Ordinance (the Bavarian alternative). Fundamental principles and initial results].
    Author: Eder H.
    Journal: Aktuelle Radiol; 1991 Jul; 1(4):159-63. PubMed ID: 1911890.
    Abstract:
    The visual method is an alternative for examining whether film processing and the x-ray equipment are in accordance with the provisions of subsection 16 of the Federal German X-ray Ordinance (Roentgenverordnung). By this alternative it is possible to dispense with the densitometer and the sensitometer. Workday-to-workday or weekly control exposure of the grey scales is performed by means of the x-ray equipment, the dose being maintained at a constant level. The grey scale produced in this manner is compared with a reference scale; this ensures continual monitoring of the dose-density relation. Errors of the apparatus and errors during developing, or of the film, can be recognised separately due to double-sided measurement of the dose (entrance dose of the test sample and exit or film dose).
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