Apparatus for shielding and grounding x-ray detectors of a CT scanner
AssigneeAnalogic Corporation
InventorsHans Weedon, John Dobbs
Life of this patent
Estimating the term…
Abstract
The invention provides an apparatus for shielding and grounding an x-ray detector assembly which is thereby substantially protected from pickup and microphonics. The apparatus includes an electrically conductive enclosure substantially enclosing the detector assembly and connected to the ground plane of the data acquisition system (DAS) independently of the signal and return paths between the detector assembly and the DAS.
Claims20
An apparatus for shielding and grounding an x-ray detector assembly, wherein the x-ray detector assembly is supported by a mounting structure, and the x-ray detector assembly is electrically connected to a data acquisition system (DAS) via at least a signal line and a return line, the DAS having a ground plane defining system ground, the apparatus comprising:
- an electrically conductive enclosure substantially enclosing the x-ray detector assembly;
- and
- means for electrically connecting said electrically conductive enclosure to said ground plane independently of said signal line and said return line.
ACT scanner of the type including (a) a gantry comprising (1) a disk for supporting at least an x-ray source and (2) a frame for rotatably supporting the disk for rotation about a rotation axis, (b) an x-ray detector assembly having (i) at least one x-ray detector cooperative with the at least one x-ray source and (ii) a mounting structure connected to the disk for supporting said at least one detector, and (c) a data acquisition system (DAS) for processing signals received from said at least one detector, wherein the at least one x-ray detector is connected to the DAS by at least a signal line and a return line, the DAS having a ground plane defining system ground, the apparatus further comprising:
- an electrically conductive enclosure substantially enclosing the x-ray detector assembly;
- and
- means for electrically connecting said electrically conductive enclosure to said ground plane independently of said signal line and said return line.
Dependencies are inferred from the claim text.