WO2000055645B1 - Device and method relating to x-ray imaging - Google Patents

Device and method relating to x-ray imaging

Info

Publication number
WO2000055645B1
WO2000055645B1 PCT/SE2000/000524 SE0000524W WO0055645B1 WO 2000055645 B1 WO2000055645 B1 WO 2000055645B1 SE 0000524 W SE0000524 W SE 0000524W WO 0055645 B1 WO0055645 B1 WO 0055645B1
Authority
WO
WIPO (PCT)
Prior art keywords
detectors
detector
scan
collimators
view
Prior art date
Application number
PCT/SE2000/000524
Other languages
French (fr)
Other versions
WO2000055645A1 (en
Inventor
Mats Danielsson
Original Assignee
Mamea Imaging Ab
Mats Danielsson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SE9900922A external-priority patent/SE9900922D0/en
Priority claimed from SE9903559A external-priority patent/SE515983C2/en
Application filed by Mamea Imaging Ab, Mats Danielsson filed Critical Mamea Imaging Ab
Priority to EP00917581.1A priority Critical patent/EP1192479B1/en
Priority to AU38533/00A priority patent/AU3853300A/en
Publication of WO2000055645A1 publication Critical patent/WO2000055645A1/en
Publication of WO2000055645B1 publication Critical patent/WO2000055645B1/en
Priority to US09/682,540 priority patent/US7212605B2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
    • G01T1/164—Scintigraphy
    • G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
    • G01T1/1644—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using an array of optically separate scintillation elements permitting direct location of scintillations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/20—Measuring radiation intensity with scintillation detectors
    • G01T1/2018—Scintillation-photodiode combinations
    • G01T1/20183—Arrangements for preventing or correcting crosstalk, e.g. optical or electrical arrangements for correcting crosstalk
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/24—Measuring radiation intensity with semiconductor detectors

Abstract

The present invention relates to an arrangement (100, 504) for detecting x-ray radiations comprising a carrying member (110) on one face (111) arranged with detectors (103, 103a, 103b) consisting of a plurality of sensors (132) arranged on a substrate (131). The detectors (130, 130a, 130b, 630) are arranged substantially edge to edge at least in one row on at least one side of said carrying member.

Claims

AMENDED CLAIMS[received by the International Bureau on 25 September 2000 (25.09.00); original claims 1-24 replaced by amended claims 1-23 (5 pages)]
1. An arrangement (100, 504, 600) for detecting x-ray radiations comprising a carrying member (110), at least on one side (111) arranged with detectors (130, 130a, 130b, 630) consisting of a plurality of sensors (132) provided on a substrate (131), characterized in that said detectors (130, 130a, 130b, 630) are arranged substantially edge to edge at least in one row on at least said one side of said carrying member, and that said detector (130, 130a) has a sensor plane, and that sensor plane arranged in an angle (α) to incident x-ray beams (120).
2. The arrangement according to claim 1, characterized in that said detectors (630) are arranged side by side.
3. The arrangement according to claim 1, characterized in that at least two detectors (130, 130a, 130b) are arranged in at least two levels and displaced relative each other such that an inactive section (133, 134) on one detector is overlapped with an active area (132) of the other electrode.
4. The arrangement according to any of claims 1-3, characterized in that said sensor plane is arranged in parallel to incident x-ray beams (120).
5. The arrangement according to claim 1, characterized in that said carrying member (110) is tilted to arrange said sensor plane in said angle (α).
6. The arrangement according to any of previous claims, characterized in that said detector is arranged on a supporting member (201).
7. The arrangement according to any of previous claims, characterized in that the detectors consist of one of a scintillator optically connected to a CCD, silicon diodes, a gaseous detector, such as a Parallel Plate Chamber where the gas volume is oriented edge- on to the incident X-rays.
8. An x-ray apparatus (500) comprising:
- an essentially planar member (503, 510) of a material non-transparent to X-rays, having an elongated slot (401a, 401b) formed therein,
- an array of detectors (504) provided in communication with said slots and arranged to detect X-rays and for providing a signal representing the intensity of said X-rays impinging thereon,
- means for moving said essentially beam directing member (503, 510) and an object (507) to be examined relative each other, characterized in that said array of detectors comprises substantially in parallel arranged detector arrangements (100, 504, 600) consisting of one or several carrying members (110), each arranged on at least one face (111) with detectors (130, 130a, 130b, 630) comprising a plurality of sensors (132) provided on a substrate (131), and that said detectors (130, 130a, 130b, 630) are arranged substantially edge to edge at least in one row on at least one side of said carrying member.
9. The apparatus according to claim 8, characterized in that said detectors (630) are arranged side by side.
10. The apparatus according to claim 8, characterized in that at least two detectors (130, 130a, 130b) are arranged in at least two levels and displaced relative each other such that an inactive section (133, 134) on one detector is overlapped with an active area (132) of the other electrode.
11. The apparatus according to claim 8, characterized in that it further includes means to acquire data from said detector arrays at intervals corresponding to a fraction of the width of said sensor arrays
12. The apparatus according to any one of claims 8 and 9, characterized in that the sensors on said detector arrays are made of silicon wafers oriented substantially edge-on to the incident X-rays.
13. The apparatus according to any one of claims 8 - 12, characterized in that said detector (130, 130a) has a sensor plane, and that sensor plane is arranged in an angle (α) to incident x-ray beams (120).
14. The apparatus according to any one of claims 8- 13, characterized in that said detector (130, 130b) has a sensor plane, and that sensor plane is arranged in parallel to incident x-ray beams (120).
15. The apparatus according to any one of claims 8 - 14, characterized in that said essentially beam directing member (503, 510) is arranged with slots (401a) in at least two rows, and slots in each row displaced relative each other.
16. The apparatus according to any one of claims 8 - 14, characterized in that said essentially beam directing member is refracting or focusing member.
17. N method for scanning in an apparatus according to any of claims 8 - 16, characterized by arranging a first part of collimators (510) before start of the scanning in a field of view while the second part of the collimators are outside the field of view,
- starting the scan from a first position and said collimators and detectors having a first speed,
- bringing the said collimators and detectors to a maximum, substantially constant speed when all collimators and detectors are in the field of view, and
- when the first collimator is outside the field of view the bringing the said collimators and detectors to a third speed.
18. The method according to claim 17, characterized by the further step of stopping the scan when said second part of the collimators are outside the field of view.
19. The method according to claim 17, characterized in that an acceleration time before the scan reaches a maximum speed and a deceleration time before it stops is determined in such a way that the parts of an image where the acceleration and retardation takes place obtains substantially a same photon statistics as the rest of the image.
20. N method for scanning in an apparatus according to any of claims 8 - 19, characterized by
- starting a scan, - when the scan starts providing said slots and corresponding detectors substantially outside a field of view;
- passing substantially all slots and corresponding detectors the object and thus the said field of view
- measuring scan X-ray fluxes together with position coordinates for all detectors; - terminating the scan only after all slots and corresponding detectors are substantially outside the field of view.
21. The method according to claim 20, characterized by incrementing the scanning at least a distance corresponding to a fraction of a distance of the detectors arrangements.
22. The method according to claim 21, characterized in that the scan is continuous and that readout of data is performed at intervals corresponding to a fraction of a distance between the detector arrangements.
23. The method as claimed in any of claims 20 or 21, characterized in that the read-out data for each increment and for each sensor array are stored as data arrays, that the stored data for each sensor array are separately combined to form an image, and that images obtained by each sensor array are superposed to form a final image.
PCT/SE2000/000524 1999-03-15 2000-03-15 Device and method relating to x-ray imaging WO2000055645A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00917581.1A EP1192479B1 (en) 1999-03-15 2000-03-15 Device and method relating to x-ray imaging
AU38533/00A AU3853300A (en) 1999-03-15 2000-03-15 Device and method relating to x-ray imaging
US09/682,540 US7212605B2 (en) 1999-03-15 2001-09-17 Device and method related to X-ray imaging

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
SE9900922-7 1999-03-15
SE9900922A SE9900922D0 (en) 1999-03-15 1999-03-15 Device and method for scanning and image acquisiton with multi-slot collimator system for x-ray imaging
US15733399P 1999-10-01 1999-10-01
SE9903559A SE515983C2 (en) 1999-03-15 1999-10-01 X-ray radiation detecting arrangement for X-ray imaging system, has detectors arranged from one edge to other in row on one face of carrying printed circuit board
US60/157,333 1999-10-01
SE9903559-4 1999-10-01

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/682,540 Continuation US7212605B2 (en) 1999-03-15 2001-09-17 Device and method related to X-ray imaging

Publications (2)

Publication Number Publication Date
WO2000055645A1 WO2000055645A1 (en) 2000-09-21
WO2000055645B1 true WO2000055645B1 (en) 2000-12-07

Family

ID=27355957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/000524 WO2000055645A1 (en) 1999-03-15 2000-03-15 Device and method relating to x-ray imaging

Country Status (4)

Country Link
US (1) US7212605B2 (en)
EP (1) EP1192479B1 (en)
AU (1) AU3853300A (en)
WO (1) WO2000055645A1 (en)

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US7212604B2 (en) * 2005-06-29 2007-05-01 General Electric Company Multi-layer direct conversion computed tomography detector module
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US20080023636A1 (en) * 2006-07-25 2008-01-31 Samir Chowdhury Tungsten polymer collimator for medical imaging
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Also Published As

Publication number Publication date
US20020018543A1 (en) 2002-02-14
AU3853300A (en) 2000-10-04
WO2000055645A1 (en) 2000-09-21
EP1192479B1 (en) 2013-05-29
US7212605B2 (en) 2007-05-01
EP1192479A1 (en) 2002-04-03

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