Computed tomography unit having an aperture stop

Details Computed tomography unit having an aperture stop Computed tomography unit having an aperture stop

2007-12-25

2007-12-25

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S007000, C378S009000

Reexamination Certificate

active

11100531

ABSTRACT:
A computed tomography unit includes at least one X-ray tube, that scans an object in a fashion rotating in a circle or spiral about a z-axis, in combination with an oppositely situated detector having a multiplicity of detector rows. Each detector row includes an aperture Δz in the z-direction, having a multiplicity of detector elements. Between the X-ray tube and detector, a detector diaphragm is arranged that reduces the aperture Δz of the detector rows in the z-direction. The X-ray tube includes a focus, of variable location relative to the X-ray tube and which alternatingly assumes during scanning at least two different positions that have different z-coordinates relative to the X-ray tube R.

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“Bildgebende Systeme für die medizinische Diagnostik”, Kap. 2.2.3, Herausgeber: Heinz Morneburg, 3. Auflage, ISBN 89578-002-2, Seiten 55-58.
German Office Action dated Jan. 13, 2005.

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