An X-ray exposure calculator.

This article describes an algorithm, and presents an 'Applesoft' program for calculating the X-ray exposure factors for an Oldelft Radiotherapy Simulator. The program runs on a 48K Apple II Europlus computer. The article also describes which variables would need to be altered to make the program suitable for other equipment, and describes the Applesoft commands that may need to be translated into another Basic dialect in order to run it on a different computer.