Radiation imaging system, device and method for scan imaging
First Claim
1. An imaging system for high energy radiation direct conversion scan imaging, comprising:
- a high energy radiation source member;
a semiconductor high energy radiation direct conversion imaging device, including a plurality of individually addressable imaging cells, each imaging cell comprising a detector cell and a readout cell for producing individual imaging cell output values representative of high energy radiation incident on said detector cell, said imaging device comprising an imaging area, having a length and a width comprising plural rows and columns of imaging cells, each extending generally orthogonally to the direction of radiation transmission, and a thickness, extending generally in the direction of radiation transmission, which is substantially shorter than both said length and said width;
said source member and/or said imaging device arranged to move substantially continuously relative to an object position for scanning an object at said object position; and
wherein said readout cells are arranged to readout said individually addressable imaging cell output values at time intervals substantially corresponding to an object image point traversing half the distance or less of a detector region in the scanning direction during a scan.
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Abstract
An imaging system for high energy radiation direct conversion scan imaging includes a high energy radiation source and a semiconductor high energy radiation direct conversion imaging device arranged around an object position. The imaging device includes a plurality of imaging cells, each imaging cell comprising a detector cell and a readout cell for producing imaging cell output values representative of high energy radiation incident on the detector cell. The source member and/or the imaging device were arranged to move substantially continuously relative to each other for scanning an object at the object position. The readout cells are operated to read out the imaging cell output values at time intervals which substantially correspond to an object image point traversing half the distance of a detector region or cell in the scanning direction. Such a configuration provides for pixel level resolution during the scanning operation.
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Citations
64 Claims
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1. An imaging system for high energy radiation direct conversion scan imaging, comprising:
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a high energy radiation source member; a semiconductor high energy radiation direct conversion imaging device, including a plurality of individually addressable imaging cells, each imaging cell comprising a detector cell and a readout cell for producing individual imaging cell output values representative of high energy radiation incident on said detector cell, said imaging device comprising an imaging area, having a length and a width comprising plural rows and columns of imaging cells, each extending generally orthogonally to the direction of radiation transmission, and a thickness, extending generally in the direction of radiation transmission, which is substantially shorter than both said length and said width; said source member and/or said imaging device arranged to move substantially continuously relative to an object position for scanning an object at said object position; and wherein said readout cells are arranged to readout said individually addressable imaging cell output values at time intervals substantially corresponding to an object image point traversing half the distance or less of a detector region in the scanning direction during a scan. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A method of high energy radiation direct conversion scan imaging using an imaging system including:
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a high energy radiation source member; and a semiconductor high energy radiation direct conversion imaging device including a plurality of individually addressable imaging cells, each imaging cell comprising a detector cell and a readout cell for producing imaging cell output values representative of high energy radiation incident on said detector cell, said imaging device comprising an imaging area, having a length and a width comprising plural rows and columns of imaging cells, each extending generally orthogonally to the direction of radiation transmission, and a thickness, extending generally in the direction of radiation transmission, which is substantially shorter than both said length and said width; the method comprising; moving said source member and/or said imaging device substantially continuously relative to an object position for scanning an object of said object position; and reading out imaging cell output values at time intervals substantially corresponding to an object image point traversing half the distance of a detector region in the direction of scanning. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. An imaging system for high energy radiation direct conversion scan imaging, which is arranged to provide imaging data for generating plural tomographic image planes of an object from a single imaging scan operation, comprising:
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a high energy radiation source member; a semiconductor high energy radiation direct conversion imaging device including a plurality of imaging cells, each imaging cell being individually addressable and comprising a detector cell and a readout cell for producing imaging cell output values representative of high energy radiation incident on said detector cell; said source member and/or said imaging device arranged to move substantially continuously relative to an object position for scanning an object at said object position; and wherein said readout cells are operable to readout said individually addressable imaging cell output values at time intervals substantially corresponding to an object image point traveling half the distance or less of a detector region in the scanning direction during a scan.
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64. A method of high energy radiation direct conversion scan imaging using an imaging system, which is arranged to provide imaging data for generating plural tomographic image planes of an object from a single imaging scan operation, the system including:
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a high energy radiation source member; and a semiconductor high energy radiation direct conversion imaging device including a plurality of image cells, each imaging cell being individually addressable and comprising a detector cell and a readout cell for producing imaging cell output values representative of high energy radiation incident on said detector cell; the method comprising; moving said source member and/or said imaging device substantially continuously relative to an object position for scanning an object of said object position; and reading out individually addressable imaging cell output values at time intervals substantially corresponding to an object image pointy traversing half the distance of a detector region in the direction of scanning.
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Specification