Radiographic apparatus and water calibration method

Details Radiographic apparatus and water calibration method Radiographic apparatus and water calibration method

2006-06-06

2006-06-06

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Accessory

Testing or calibration

C378S018000, C378S019000

Reexamination Certificate

active

07056021

ABSTRACT:
A radiographic apparatus has a radiation source that emits radiation two-dimensionally, a two-dimensional radiation detector disposed so as to detect radiation emitted from the radiation source, a rotation unit driven so that a subject is relatively rotated with respect to said radiation source and said radiation detector, a detachable water phantom, disposed on the rotation unit, having a size that covers a portion of a detection area of the radiation detector from radiation emitted from the radiation source, the portion extending in the direction perpendicular to the rotation axis for the entire range of the detection area and in the direction of the rotation axis for a part of the range of the detection area, and a calibration unit that performs water calibration of data obtained by radiography of the subject, using data obtained by radiography of the water phantom across the entire detection area while moving a position of the water phantom along the axis rotation of the rotation unit.

REFERENCES:
patent: 6041097 (2000-03-01), Roos et al.
patent: 6470068 (2002-10-01), Cheng
patent: 6848827 (2005-02-01), Wu et al.
patent: 2000-107162 (2000-04-01), None
patent: 2000-217810 (2000-08-01), None

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