ANALYSIS OF IMAGE QUALITY PARAMETERS USING A COMBINATION OF AN ANSI TYPE PHANTOM AND THE LEEDS TOR(CDR) TEST OBJECT IN SIMULATIONS OF SIMPLE EXAMINATIONS

Following the criteria of the British Institute of Radiology a global image quality test, employing the Leeds TOR(CDR) test object has been systematically used as a starting point of a QC programme in the Madri d area. In order to guarantee the correlation of the image quality of the phantom with the CEC image quality criteria and other criteria fro m the radiological point of view, some patient equivalent structures ( similar to those described in the ANSI type phantom) have been joined to the Leeds TOR(CDR) test object. A novel use of TOR(CDR) is presente d that attempts to assess image quality under conditions more relevant to some clinical applications. From the results presented, some concl usions are drawn relating to the suitability and accuracy of using mix ed phantoms such as the one described.