Title:
SCANNING-BASED DETECTION OF IONIZING RADIATION
Document Type and Number:
WIPO Patent Application WO2004080130
Kind Code:
A3
Abstract:
A scanning-based radiation detector apparatus for recording an image of an object comprises a 1D detector unit (41) exposed to a fan-shaped ionizing radiation beam, after having interacted with the object; a device (87-89, 91) for moving the 1D detector unit (41) and the fan-shaped beam relative the object while repeatedly detecting to thereby create a 2D image of the object; and a control device for controlling the repeated detections. The one-dimensional detector unit (41) has an ionizing radiation sensitive thickness (dt), which is larger than the thickness of the fan-shaped beam when impinging on the one-dimensional detector unit. To obtain a short exposure time of each 1D image, but still a high spatial resolution in the 2D image, a 1D image of the fan-shaped beam is recorded every n'th length unit of the movement, where n is not lower than essentially half the thickness of the fan-shaped beam in that length unit, but lower than the ionizing radiation sensitive thickness (dt) of the 1D detector unit (41) in that length unit.
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Inventors:
ULLBERG CHRISTER (SE)
FRANCKE TOM (SE)
FRANCKE TOM (SE)
Application Number:
PCT/SE2004/000278
Publication Date:
November 11, 2004
Filing Date:
March 02, 2004
Export Citation:
Assignee:
XCOUNTER AB (SE)
ULLBERG CHRISTER (SE)
FRANCKE TOM (SE)
ULLBERG CHRISTER (SE)
FRANCKE TOM (SE)
International Classes:
G01N23/04; G21K5/10; (IPC1-7): G01N23/02; A61B6/00
Foreign References:
| EP0046609A1 | 1982-03-03 | |||
| US5650626A | 1997-07-22 |
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