 In 1973 Brown was appointed as a team leader on the development of multiplanar 3D scanners at Sonicaid in Livingston, West Lothian.Brown developed a contact scanner that could produce 3 dimensional stereoscopic virtual image of body tissue.The new machine known as the "Multiplanar Scanner" was finally developed by 1976 and shown at an American Institute of Ultrasound in Medicine meeting in the same year and put into production in 1977.