超高感度増感紙の臨床適応

概要

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The physical characteristics of ultra-high-speed screen-film systems (UHSS) (i. e. Quanta III (Q III), G8, G12, and KU systems) were studied and the UHSS systems were used in clinical radiography, such as infantile hip joint, fetus (pelvimetry) and urological radiography. When using a thin object and low tube voltage, the relative speeds of the UHSS systems were 2-3.5 times faster than that of a medium speed system, such as Hiscreen-A. On using a thick object and high tube voltage the relative speeds of the UHSS systems were 5-10 times faster than that of the His-A system. The G12 and KU systems showed particularly high speeds. Modulation transfer factors of the Q III and G8 systems were better than that of the other UHSS system. The sharpness of radiographic systems is important in infantile hip joint radiography, and thus the Q III, G8, and KU systems are most suitable for such a case. Because ultra-high-speed is required in fetrography, G12 and KU systems should be most suitable. Urinary organs are constructed from low spatial frequency. The image quality of the G8 system were found to be best for urological radiography.
公益社団法人日本放射線技術学会の論文
1988-05-01