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 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 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 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
51 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 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 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 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, 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, 49, 50, 51)
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7. A dental computerised tomography imaging system comprising an imaging system according to 1.
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33. 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 image 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;
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 (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification