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US 9,808,211 B2Granted
Head and neck imager
AssigneeCarestream Health, Inc.
InventorsJohn Yorkston, William C. Wendlandt, Peter A. Newman, Donna K. Rankin-Parobek, David Y. Chan
Life of this patent
Estimating the term…
Abstract
A CBCT imaging system comprises a digital radiation detector and radiation source. A detector transport moves the detector along at least a portion of a first curved path and a radiation source transport moves the radiation source along at least a portion of a second curved source path. The detector is configured to travel at least a portion of the first curved path, and the radiation source is configured to travel at least a portion of the second curved path. The detector is configured to obtain a plurality of 2D projection images over a range of scan angles for reconstructing a 3D volume image using the plurality 2D projection images.
Claims19
An imaging system comprising:
- a digital radiation detector;
- a detector transport to move the digital radiation detector along at least a portion of a first curved path, the at least a portion of the first curved path extending at least partially around the head of a patient at a distance D1 from a central axis of the first curved path;
- a radiation source;
- a radiation transport to move the radiation source along at least a portion of a second curved source path outside the first curved path, the second curved source path extending at least partially around the head of the patient and having a distance D2 from the central axis greater than the distance D1;
- wherein the digital radiation detector is configured to travel at least a portion of the first curved path, the radiation source is configured to travel at least a portion of the second curved source path, the distance D2 is sufficiently long to allow sufficient radiation exposure of the head for a CBCT image capture by the digital radiation detector, and wherein the digital radiation detector is configured to obtain a plurality of 2D projection images over a range of image capture scan angles;
- a processor to reconstruct a 3D volume using more than one of the plurality of 2D projection images;
- and
- a substantially circular housing configured to contain the radiation source, the digital radiation detector, the radiation transport, and the detector transport, the substantially circular housing including an examination opening for placement of the head of the patient.
5 more elements
An imaging system comprising:
- a vertical height adjustable and tiltable gantry;
- a digital radiation detector attached to the gantry;
- a detector transport attached to the gantry and configured to move the digital radiation detector along at least a portion of a first curved path, the first curved path extending at least partially around the head of a patient placed at a central axis of the first curved path, the digital radiation detector disposed at a distance D1 from the central axis;
- at least one radiation source;
- a radiation transport to move the at least one radiation source along at least a portion of a second curved source path outside the first curved path, the second curved source path extending at least partially around the head of the patient and having a distance D2 from the central axis greater than the distance D1,
- wherein the digital radiation detector is configured to travel along at least a portion of the first curved path, the at least one radiation source is configured to travel along at least a portion of the second curved source path, and wherein the distance D2 is sufficiently long to allow sufficient radiation exposure of the patient for capturing a plurality of 2D projection images of the head of the patient by the digital radiation detector;
- a processor to reconstruct a 3D volume using more than one of the plurality of 2D projection images;
- and
- a substantially circular housing configured to contain the gantry, the substantially circular housing including an examination opening for placement of the head of the patient.
6 more elements
An imaging system comprising:
- a support column;
- a rotatable support arm attached to the support column, the rotatable support arm having a central rotation axis;
- a digital radiation detector having a substantially planar shape attached to the support column, the digital radiation detector positioned such that the head of a patient may be place above and proximate to a top planar surface of the digital radiation detector;
- and
- a radiation source attached to the rotatable support arm to move along at least a portion of a curved source path, the curved source path extending at least partially around the head of the patient and positioned further from the head of the patient than the digital radiation detector, the radiation source aimed at the top planar surface of the digital radiation detector, wherein the radiation source is configured to rotate with respect to the rotatable support arm such that the radiation source remains aimed at the top planar surface of the digital radiation detector when the rotatable support arm is rotated.
2 more elements
Dependencies are inferred from the claim text.