Diagnostic detection of different breast pathologies are influenced directly by the sensitivity and specificity of mammography equipment. Both parameters can be compromised in the absence of a regular quality control. In orther to achieve these objectives, quality control measures following the "Spanish Protocol for the Quality Control in Radiodiagnostics", "European Protocol for the Quality Control of the Technical Aspects of Mammography Screening" and / or "ACR’s Manual of Mammography Quality Control” should be carried out, where they recommend annual, semi-annual, weekly and daily testing, being the weekly and daily tests carried out by Radiographer.

Retrospective analysis of the results obtained in the last six months of weekly quality contol were made ​​by a digital mammogram of Galdakao-Usansolo Hospital (Vizcaya, Spain), selecting CNR (Contrast Noise Relation) and MTF (Modulation Transfer Funtion) tests, recording the CNR parameters obtained. We used a dummy supplied by the manufacturer of PMMA (polymethyl methacrylate) with different components inside as a 0.2mm aluminum plate, performing an acquisition without compression paddle and selected parameters by the automation equipment.

24 results were recorded for CNR, being the lowest 24.61 and the highest 24.86 and discarding anomalous results due to idiopathic 44.54. The mean is 24.63. All results were recorded in an Excel file for further analysis by the Radiation Protection Service.

The Radiographer is responsible for implementing quality control procedures, monitoring, evaluating and taking corrective measures to maintain standards, improving the quality of diagnosis in mammographic images of high quality while minimizing the radiation dose to the patient.