Heel effect compensation filter X-ray irradiator, X-ray CT...

Details Heel effect compensation filter X-ray irradiator, X-ray CT... Heel effect compensation filter X-ray irradiator, X-ray CT...

2008-09-30

2008-09-30

Song, Hoon (Department: 2882)

X-ray or gamma ray systems or devices

Beam control

Filter

C378S145000, C378S156000

Reexamination Certificate

active

10594513

ABSTRACT:
A heel effect compensation filter is configured to have a thickness distribution that uniforms an X-ray intensity angular distribution that is nonuniform in the body axis direction of a subject in an X-ray flux irradiated space. The space is formed by an X-ray flux diverging from an anode in a body width direction of the subject and diverging in a shape of an approximate sector in the body axis direction due to the heel effect, when the X-ray flux generated on the anode by irradiating a thermoelectron beam flux from a cathode to the anode is irradiated on the subject. The thickness distribution can be obtained using a predetermined formula.

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“Mechanical Engineering of X-ray CT Scanner (5)-Artifact-, 6, Artifact Due to Cone-Angle of Multi-Slice CT”, Jun. 2002, pp. 733-739.

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