TWO-DIMENSIONAL IMAGE DETECTING SYSTEM

摘要

When a conventional idea of determining a setting condition from a parameter of resolution (image resolution) is changed to use an X-ray tube with a stable focus size, setting conditions are determined from a focus size φ [μm] of the X-ray tube. The minimum radiography size b [μm] is settable from the focus size φ [μm] and φ≦b/2. A magnification rate ε is settable from the set minimum radiography size b [μm], a pixel pitch d [μm] of an X-ray detector, and bε/d≧5. Consequently, the minimum radiography size b [μm] and the magnification rate ε are each settable with use of the X-ray tube having the stable focus size φ [μm]. This results in stable radiography or fluoroscopy through magnifying an object in minute size.

主权项

1. A two-dimensional image detecting system configured to detect a two-dimensional image based on light or radiation detected, the system comprising:
a generating source configured to generate the light or the radiation; and a two-dimensional array type detector with detecting elements being arranged in a two-dimensional array, the detecting elements being configured to detect the light or the radiation by converting the light or the radiation into charge information, wherein a minimum radiography size is set in accordance with a focus size, and a magnification rate is set in accordance with the set minimum radiography size so as to hold relationships:
bε/d≧5φ≦b/2, wherein b denotes the minimum radiography size, c denotes the magnification rate, d denotes a pixel pitch of the two-dimensional array type detector, and φ denotes the focus size of the generating source, the magnification rate being determined from distances among the generating source, an object, and the two-dimensional array type detector.