Detector rotation controlled by x-ray collimation
AssigneeKoninklijke Philips N.V.
InventorHANNS-INGO MAACK
Life of this patent
Estimating the term…
Abstract
The present invention relates to a rotatable X-ray detector. In order to improve clinical workflow, an X-ray detector arrangement (10) is provided that comprises an X-ray detector unit (12) and a rotation unit (14). The X-ray detector unit (12) comprises an X-ray detector (16) with a plurality of X-ray detecting elements arranged as a detector surface (18). The rotation unit (14) is configured to rotate the X-ray detector about an axis (20) perpendicular to the detecting surface (18) at least at a point of intersection with the detector surface (18) upon receiving a rotation signal (22). Further, the rotation signal (22) is dependently ruled by a collimator configuration of an X-ray source arrangement for providing X-ray radiation towards the X-ray detector unit.
Claims15
An X-ray detector arrangement, comprising:
- an X-ray detector unit;
- and
- a rotation unit;
- wherein the X-ray detector unit comprises an X-ray detector with a plurality of X-ray detecting elements arranged as a detector surface;
- wherein the rotation unit is configured to rotate the X-ray detector about an axis perpendicular to the detector surface at least at a point of intersection with the detector surface upon receiving a rotation signal relative to the X-ray detector unit;
- and
- wherein the rotation signal is dependently ruled by a collimator configuration of an X-ray source arrangement for providing X-ray radiation towards the X-ray detector unit.
X-ray image acquisition system according to claim wherein the control unit is configured to detect a geometry of a collimation field on the detector surface based on the collimator configuration;
- wherein the geometry comprises a primary extension and a secondary extension which is transverse to the primary extension;
- and the primary extension is larger than the secondary extension;
- wherein the detector surface has a shape with a primary detector extension and a secondary detector extension, and the primary detector extension is larger than the secondary detector extension;
- wherein the control unit is configured to evaluate a geometric relationship between the detected collimation field and the detector surface and to provide in response the rotation signal to the rotation unit;
- and
- wherein the rotation unit is configured to rotate the X-ray detector based on the rotation signal such that the collimation field is limited confined to the shape of the detector surface.
A method for aligning a detector, comprising the following steps:
- a) adjusting a configuration of a collimator of an X-ray source arrangement;
- b) detecting the adjusted collimator configuration;
- c) providing a rotation signal to a rotation unit;
- wherein the rotation signal is based on the detected adjusted collimator configuration;
- and
- d) rotating an X-ray detector according to the rotation signal.
Dependencies are inferred from the claim text.