Motion corrected hepatic scintigraphy: an objective clinical evaluation.

An analogue motion-correction device was built for a scintillation camera. Corrected and uncorrected images were simultaneously recorded on roid film during routine hepatic scintigraphy of 1,100 patients, selected without known bias. Autopsy, liver biopsy or inspection at laparotomy (and clinical followup in three patients with neither known malignancy nor benign liver disease) were considered to have established the true state of the livers of 49 patients with hepatic masses and 53 patients with normal livers. Five observers of varying experience in nuclear medicine independ. ently evaluated the scintigrams for the presence of mass lesions, using a thetruestates.Resultswere expressed as operating