A data storage system has been created for recording clinical radioisotope scan data on a microcomputer system, located and readily available for use in an imaging department. The input of patient data from the request cards and the results sheets is straightforward as menus and code numbers are used throughout a logical sequence of steps in the program. The questions fall into four categories; patient information, referring centre information, diagnosis and symptoms and results of the investigation. The main advantage of the analysis program is its flexibility in that it follows the same format as the input program and any combination of criteria required for analysis may be selected. The menus may readily be altered and the programs adapted for use in other hospital departments.