Radiation image-acquiring apparatus, and radiation...

Details Radiation image-acquiring apparatus, and radiation... Radiation image-acquiring apparatus, and radiation...

2006-04-04

2006-04-04

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Electronic circuit

Object responsive control

C378S008000, C378S062000

Reexamination Certificate

active

07023958

ABSTRACT:
A radiation image-acquiring apparatus or a radiation image-acquiring method capable of reducing artifact due to pulsations of a heart of a subject to be examined is disclosed. X-rays generated by an X-ray generating portion and transmitted through the subject are detected as a two-dimensional distribution by a two-dimensional detector while the subject is rotated by a rotating table in an image-acquiring area formed by the X-ray generating portion and the two-dimensional detector, pulsation variations specific to the subject are detected, and a period p of the variation is calculated. A ratio q of a static time relative to the variation period p is then determined, a rotation time for one rotation is calculated based on the variation period p and the ratio q, and a rotating table is rotated.

REFERENCES:
patent: 2005/0185754 (2005-08-01), Tsujii
patent: 2000-51208 (2000-02-01), None
Feldkamp, et al. “Optics and Image Science”, Journal of the Optical Society of America A. vol. 1, No. 6. Jun. 1984.

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