X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2004-07-19
2009-08-04
Glick, Edward J (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S205000, C378S207000
Reexamination Certificate
active
07570734
ABSTRACT:
In an X-ray computerized tomography scanner, a correction phantom embedding an X-ray absorbing object is put on or around a non-vertical rotary axis between an X-ray source and a two-dimensional X-ray detector, and two dimensional imaging data of the phantom is acquired. Then a locus of the X-ray absorbing material is determined in the two-dimensional imaging data, and based on the locus an ideal locus is obtained in the direction of the rotary axis. Next, a difference between the calculated position of the ideal locus and a measured position is determined in the direction of the rotary axis. The difference is used to correct deviation in the direction of the rotary axis.
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Arai Yoshinori
Suzuki Masakazu
Androlia William L.
Corbett John M
Glick Edward J
J. Morita Manufacturing Corporation
Koda H. Henry
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