AUTOMATIC DOT FACTOR SYSTEM FOR A SCINTILLATION DEVICE AND METHOD OF OPERATION

摘要

A scintillation scanner having a dot factor system for automatically spacing the dots which are printed by a color printer representative of radiation activity. The dot factor system utilizes circuitry for counting the number of signals which occur at a calibration point or "hot spot" for a predetermined number of intervals of time and then dividing the number of counted signals by the number of intervals of time to develop a calibrate signal having a high degree of statistical accuracy. The calibrate signal is then applied to a decoding and divider network for dividing the number of counts representative of radiation activity by a factor which is dependent upon the number of counts which occur at the calibration point to thereby provide optimum spacing between the printed dots for a given study.