[A debatable issue: indications for the selection and use of absorber materials].

In response to the present occasion, the areas of application of different radiation-absorbent test device materials used in practice are presented in an overview. The test methods recommended for acceptance and constancy testing, the absorbers suitable for this as well as the dependence of a few test parameters relevant to image quality and their tolerances regarding the absorber material are described. The test results are verified and it is shown that in the use of technical test devices, unusually high dose tolerances or high densities of the test device exposures, for example, are by all means in agreement with good technically induced medical imaging quality.