FIELD: roentgenographic scanning devices for medical diagnostics. SUBSTANCE: detector incorporating case with input port, drift electrode, and electrode system disposed in gas medium has its electrode system functioning as detector case component made in the form of insulating plate with through microdot anode electrodes whose surface is coated with electricity conducting cathode layer around microdot electrodes; drift electrode and electrode system are arranged in parallel with input port plane. Detector is noted for elimination of microphone effect, enhanced coordinate definition, reduced voltage in gas booster area, and reduced depth in this area. EFFECT: simplified design, facilitated manufacture, improved repeatability of copies. 1 cl, 3 dwg
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