Usefulness of Superimposed Medical Image of ⁶⁷Ga-Emission CT and X-ray CT for the Diagnosis of Primary Lung Cancer

Abstract

A method of superimposing two images obtained by ⁶⁷Ga-SPECT and X-CT was applied in 40 cases of primary lung cancer. In lung lesions, reduced accumulation in the tumor or in the atelectasis was more clearly displayed by the above described superimposed method than by conventional methods. In cases of mediastinal lesions, accumulation in the lymph nodes as small as 10 mm in diameter which were not discernible by conventional methods could be detected. It was thus possible to diagnose intramediastinal minute lesions.