64 in the form of variant data sets 65 as well as known types of imaging devices in the form of type data sets 66 the variant data sets 65 contain an identifier for an associated type of imaging device a protocol identifier for a respective protocol as well as a parameter identifier and a parameter value for each parameter for example each variant data set 65 can include 150 parameter values of which approximately 25 must be considered approximately 1500 1800 variant data sets 65 are typically stored in the database 64 for each type of an imaging device each type data set 66 contains an identifier for a type of imaging device as well as a system description which consists of 15 25 attributes for example a protocol generator 62 enables the computer 61 to suggest new parameter values for the target type established by the expert for this purpose the protocol generator 62 accesses a knowledge base 63 that contains knowledge regarding the conversion of parameter values for example in the form of correlations between parameters and system characteristics rules or probabilistic models by means of known methods of case based reasoning from the present variant data sets 65 and from the information of the knowledge base 63 the protocol generator 62 can suggest a protocol plan with new parameter.