Back to results
US 10,539,689 B1Granted
Spectral X-ray detectors with dynamic electronic control and computational methods
AssigneeRensselaer Polytechnic Institute
InventorsGe Wang, Wenxiang Cong, Zaifeng Shi
Life of this patent
Estimating the term…
Abstract
Novel and advantageous methods and systems for performing computed tomography (CT) imaging are disclosed. Electrodes can be connected to appropriate surface sites of a detector element of a CT scanner to capture nearby electron-hole pairs generated by X-rays received on the detector element. This detection can be performed in current-integrating/energy-integrating mode.
Claims19
An imaging system, comprising:
- a computed tomography (CT) scanner including an X-ray source;
- and
- a detector for receiving X-ray radiation from the X-ray source after it passes through a sample to be imaged,
- wherein the detector includes a first pair of electrodes and a second pair of electrodes disposed thereon and configured to provide a first voltage and a second voltage, respectively, to the detector,
- wherein both electrodes of the first pair of electrodes are disposed such that incoming X-rays from the X-ray source are first incident on a side of the detector not having any of the first pair of electrodes disposed thereon, and
- wherein both electrodes of the second pair of electrodes are disposed such that incoming X-rays from the X-ray source are second incident on a side of the detector not having any of the second pair of electrodes disposed thereon.
3 more elements
A method of imaging, comprising:
- providing X-ray radiation to a sample to be imaged;
- collecting the X-ray radiation with a detector;
- providing a first voltage to the detector using a first pair of electrodes disposed thereon;
- and
- providing a second voltage to the detector using a second pair of electrodes disposed thereon,
- wherein both electrodes of the first pair of electrodes are disposed such that incoming X-rays from the X-ray source are first incident on a side of the detector not having any of the first pair of electrodes disposed thereon, and
- wherein both electrodes of the second pair of electrodes are disposed such that incoming X-rays from the X-ray source are second incident on a side of the detector not having any of the second pair of electrodes disposed thereon.
4 more elements
An imaging system, comprising:
- a computed tomography (CT) scanner including an X-ray source;
- a detector for receiving X-ray radiation from the X-ray source after it passes through a sample to be imaged, and
- a controller configured to control the first and second pairs of electrodes to apply the first and second voltages such that photons in the detector are captured in a high energy bin and a low energy bin,
- wherein the detector includes a first pair of electrodes and a second pair of electrodes disposed thereon and configured to provide a first voltage and a second voltage, respectively, to the detector, and
- wherein the controller is configured to control the pairs of electrodes to apply the voltages such that photons in the detector are captured in the high energy bin and the low energy bin in a predetermined ratio.
2 more elements
Dependencies are inferred from the claim text.