Utilization of body computed tomography units: in installations with greater than one-and-a-half years' experience.

Utilization and economic data from body computed tomography (BCT) units with more than 1 1/2 years' experience are compared to data in 1977. The average unit operates 52 hr./wk., examining 34 patients. Head studies constitute 55% of examinations, abdominal and pelvic 38%. The total technical cost of examining 35 patients/wk. is approximately $384,000. Charges have been reduced since 1977 by approximately 5%; the average annual loss is about $77,000. Technical and professional charges are lower in high-volume institutions. Current Medicare maximum allowable charges are below BCT costs and charges. Only 17% of installations meet the National Guidelines of 2,500 patient examinations per year.