A radioisotope scanner for rectilinear, arc, transverse section and longitudinal section scanning: (ASS- the Aberdeen Section Scanner)

The authors describe the construction and operation of the Aberdeen Section Scanner (ASS) with a few clinical examples. The scanner is a dual headed device which can perform conventional rectilinear scans and the more recently developed section or tomographic scans. A punched paper-tape output from both heads is incorporated in the system so that count and position information may be fed into a PDP 81 computer enabling subsequent image processing and display. The same computer and display unit are optionally "on-line" to a Nuclear Enterprises gamma camera. The link to the ASS means that the advantages of computerized image processing are available for scans carried out with the new rectilinear scanner. Various design features are discussed together with the storage and display facilities. The routine operation of the scanner and the initial clinical results are also described.