Tomographic imaging with concentric conical collimator
Patent
·
OSTI ID:5772827
An apparatus useful in backscatter tomographic imaging is described, comprising: a source of penetrating radiation means for supporting an object to be imaged so that the object includes a target volume, a focused collimator for location between the target volume and the source of penetrating radiation, the collimator comprising a plurality of concentric frusto-conical wall sections, all of the frusto-conical wall sections having a common axis, adjacent pairs of the wall sections defining scattered radiation transmitting pathways, the pathways originating at a common region in the target volume, the collimator including an axial passageway, coincident with the common axis of all the frusto-conical wall sections, and a scattered radiation detector assembly adjacent to the focused collimator and located with the focussed collimator between the detector assembly and the target volume, the scattered radiation detector assembly having a central opening to accommodate the common axis.
- Assignee:
- American Science and Engineering, Inc., Cambridge, MA
- Patent Number(s):
- US 4825454
- OSTI ID:
- 5772827
- Country of Publication:
- United States
- Language:
- English
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