Cross-sectional anatomic images by gamma ray transmission scanning.
60Co gamma-ray transmission data were measured along linear scan paths at a number of angular orientations with respect to the patient and submitted to a computer software program. Reconstructed images are displayed as digital density printouts and as isodensity contours on an x-y plotter or oscilloscope screen. Image resolution is limited primarily by factors such as collimation and the amount of transmission data collected; with the rather rudimentary apparatus at disposal, a spatial resolution better than 5 mm has been achieved.
D003201:Computers; D003936:Diagnosis, Computer-Assisted; D005720:Gamma Rays; D006801:Humans; D013679:Technology, Radiologic; D013909:Thorax / Q000033:anatomy & histology