X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2006-05-23
2010-06-29
Kao, Chih-Cheng G (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
Reexamination Certificate
active
07746977
ABSTRACT:
A digital radiation image radiographing system includes an X-ray tube to irradiate a radiographic subject with X-rays and a digital detector to detect X-rays having passed through the radiographic subject, and performs a phase contrast radiography. The system satisfies a formula (D≧(2S−E)/(M−1)), in which D (μm) represents the focal size of the X-ray tube, S (μm) represents the minimum control unit of the digital detector, R1(m) represents a distance from the focus point of the X-ray tube to the radiographic subject, R2(m) represents a distance from the radiographic subject to the digital detector, M represents an enlargement ratio (M=(R1+R2)/R1), and E represents an edge enhancement width according to X-ray refraction.
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Ohara Hiromu
Shinden Yuko
Frishauf Holtz Goodman & Chick P.C.
Kao Chih-Cheng G
Konica Minolta & Medical Graphic, Inc.
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