Controlling a computed tomography imaging procedure
AssigneeKoninklijke Philips N.V.
InventorsJinling Liu, Ravindra Mohan Manjeshwar, Steven J. Utrup, Gad Yehuda Wolach, Hao H Wang
Life of this patent
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Abstract
A mechanism for controlling the operation of a CT scanner during a scanning procedure. A radiation outputting system is configured to output radiation during an imaging phase of the scanning procedure. The subject support (patient table) of the CT scanner is controlled to move linearly, e.g. according to some predetermined linear pattern, during this imaging phase. The linear movement of the subject support includes at least one acceleration and/or deceleration phase. At least a beam width of radiation output by the CT scanner is controlled throughout the imaging phase responsive to the speed of the subject support.
Claims13
A computer-implemented method of operating a computed tomography (CT) scanner, comprising:
- providing a subject support configured to move linearly;
- providing a rotating portion of the CT scanner that mounts a radiation outputting source and controllably rotates around the subject support;
- controlling the radiation outputting source to output radiation during an imaging phase of the scanning procedure;
- controlling the subject support to move linearly, the linear movement of the subject support during the imaging phase of the scanning procedure including at least one acceleration phase or deceleration phase;
- and
- controlling one or more parameters of the CT scanner responsive to the speed of the subject support, wherein the one or more parameters comprises at least a beam width of the radiation output by the radiation outputting source, and wherein controlling the one or more parameters comprises controlling the beam width proportionally to the speed of the subject support.
An imaging system, comprising:
- a radiation detector;
- and
- a computed tomography (CT) scanner comprising a subject support configured to move linearly and a rotating portion that mounts a radiation outputting source and controllably rotates around the subject support, wherein the CT scanner is configured to:
- control the radiation outputting source to output radiation during an imaging phase of the scanning procedure;
- control the subject support to move linearly, the linear movement of the subject support during the imaging phase of the scanning procedure including at least one acceleration or deceleration phase;
- and
- control one or more parameters of the CT scanner responsive to the speed of the subject support, wherein the one or more parameters comprises at least a beam width of the radiation output by the radiation outputting source, and wherein controlling the one or more parameters comprises controlling the beam width proportionally to the speed of the subject support.
A non-transitory computer-readable medium for storing executable instructions, which cause a method for operating a computed tomography (CT) scanner to be performed, the method comprising:
- providing a subject support configured to move linearly;
- providing a rotating portion of the CT scanner that mounts a radiation outputting source and controllably rotates around the subject support;
- controlling the radiation outputting source to output radiation during an imaging phase of the scanning procedure;
- controlling the subject support to move linearly, the linear movement of the subject support during the imaging phase of the scanning procedure including at least one acceleration phase or deceleration phase;
- and
- controlling one or more parameters of the CT scanner responsive to the speed of the subject support, wherein the one or more parameters comprises at least a beam width of the radiation output by the radiation outputting source, and wherein controlling the one or more parameters comprises controlling the beam width proportionally to the speed of the subject support.
Dependencies are inferred from the claim text.