Abstract
Role development for imaging allied health professionals has progressed significantly over the last three decades with many major developments pioneered in the field of ultrasound. This paper reviews the developing role of the radiographer in ultrasound and some of the clinical, professional and educational implications of such development. As the published evidence base underpinning the latest developments is scarce, several contemporary case study examples, which have been presented verbally at study days attended by the authors, have been included. In conclusion, sonographer role development is considered within the professional contexts of extended role, advanced and consultant practice.