tool for evaluation. Clinical images should also be examined. One or more radiologists should be involved in setting up the displays for the first time to ensure that the images are clinically acceptable.
Although ultrasound QA guidelines exist for over 35 years, the implementation of QA has been inconsistent.25 One of the reasons for that may be a general opinion that formal QA in ultrasound is unnecessary because it is based on non-ionizing radiation. For imaging modalities where ionizing radiation is used, as mammography, QA is obligatory. The other reasons could be the lack of medical physicists and medical physics departments in hospitals and sonographers workload which limits the access to equipment. Although there are no legislation
