Tilted detector microscopy in computerized tomography
AssigneeUniversity of Delaware
InventorsMartin Muller, Gonzalo R. Arce
Life of this patent
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Abstract
The present invention relates to a method and setup for providing high resolution CT images at a low cost. The method utilizes a modified version of the standard CT setup wherein the radiation receiver (e.g., a detector(s)) is tilted with respect to an axis perpendicular to the plane of fan beam projection (e.g., when a fan shaped radiation beam is used). Moreover, to maximize the utilization of the radiation receiver and obtain the highest resolution in the final image, the radiation receiver is also shifted horizontally within the radiation beam.
Claims9
A setup for performing computerized tomography comprising:
- at least one radiation source which generates a fan-shaped radiation beam lying in a fan-plane;
- a radiation receiver;
- a turntable located between the at least one radiation source and the radiation receiver;
- means for tilting the radiation receiver about a tilt axis which extends perpendicularly to the fan-plane of the radiation beam;
- and
- means for shifting the radiation receiver so that the tilt axis of the radiation receiver is horizontally displaced from the central ray of the fan-shaped radiation beam.
A setup for performing computerized tomography comprising:
- at least one radiation source which generates a fan-shaped radiation beam lying in a fan-plane;
- a radiation receiver which receives the radiation generated by the at least one radiation source and converts it into electrical energy;
- a turntable located between the at least one radiation source and the radiation receiver;
- a first means for converting the electrical energy provided from the radiation receiver into a form which can be viewed on a video display unit;
- a second means for tilting the radiation receiver about a tilt axis which extends perpendicularly to the fan-plane of the radiation beam;
- and
- a third means for shifting the radiation receiver so that the tilt axis of the radiation receiver is horizontally displaced from the center of the fan-shaped radiation beam.
A method of performing computerized tomography which comprises:
- scanning an object located between a radiation source and a radiation receiver with a fan-shaped radiation beam which, after passing through the object hits the radiation receiver;
- tilting the radiation receiver about a tilt axis which extends perpendicularly to the fan-plane of the radiation beam;
- and
- shifting the radiation receiver so that the tilt axis of the radiation receiver is horizontally displaced from the center of the fan-shaped radiation beam;
- wherein the tilting and shifting of the radiation receiver is performed before or during said scanning.
Dependencies are inferred from the claim text.