1. A computer-implemented method of identifying image acquisition parameters for use in operating a CT or angiography imaging scanner, the method comprising: identifying a plurality of image data sets generated by one or more types of medical imaging scanners for a plurality of individuals; associating each image data set of the plurality of image data sets with one or more image acquisition parameters and a type of medical imaging scanner used to generate each respective image data set; computing, for each image data set of the plurality of image data sets, one or more values of a patient characteristic of the respective individual imaged from the plurality of individuals; identifying a first value of the patient characteristic for a first image data set and identifying a second value of the patient characteristic for a second image data set of the plurality of image data sets; creating a group of image data sets based on a calculated similarity between the first value and the second value, the group including the first image data set and the second image data set; receiving or identifying a selected type of medical imaging scanner to be used to image a patient of interest; identifying an image data set from the created group of image data sets, the identified image data set having been created by a type of medical imaging scanner matching the selected type of medical imaging scanner received or identified in relation to the patient of interest; and identifying a predicted scan quality or one or more image acquisition parameters suitable for using the type of medical imaging scanner selected for the patient of interest, based on one or more image acquisition parameters associated with the image data set identified from the created group of image data sets.