Quality improvements for Antenatal screening - the What, the Why, the How These presentations explain and provide a background on the purpose of the radiology feedback and how it improves screening for women. View resource: Combined test QA - Part 1: the What (pptx, 24 MB) Combined test QA - Part 2: the Why (pptx, 17 MB) Combined test QA - Part 3: the How (pptx, 18 MB)