title: [New method of anatomic localization of scintigram of various organs by simultaneous combination of emission scanning and transmission scanning].
abstract: When the photoscintillo-roentgenography is used for relating the scintigram of internal organs to the anatomic structures, this method is found to have some defects--the difference of magnification between the emission scan and the roentgenogram, the inaccuracy due to the geometric distortion of the X-ray image, the impossibility of the simultaneous photographing of the scan and the X-rays, etc. Then, to diminish the influence of these defects we improved on the photographic recording system of a dual-heal scanner, and made use of the transmission scanning method. That is, we combined the recording parts, Ch1 and Ch2, into one system, using Ch1 for the light source of transmission scan and Ch2 for that of emission scan. In this way, we managed to make the two incident rays from those light sources converge into a focus upon a film. Thus we could perform a simultaneous emission-transmission scanning, by moving, at the same time in the same direction, the scanning detector over the patient and the small radioactive source (241Am) under him. This method can be applied to any radioactive nuclide to be used in transmission scanning and emission scanning. As the result of applying this method clinically in our department, the method has proved to be very useful for anatomic localization.
mesh_terms: D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis; D008961:Models, Structural; D011877:Radionuclide Imaging / Q000379:methods*; D013945:Thymoma / Q000175:diagnosis