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1.发明申请公开(公告)号：US20200297297A1
公开(公告)日：2020-09-24
申请号：US16500858
申请日：2018-12-10
申请人： KONINKLIJKE PHILIPS N.V. , NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
发明人： CHRISTIAAN KOK , GEREON VOGTMEIER , THOMAS KOEHLER , JOHANNES WILHELMUS MARIA JACOBS , SANDEEP UNNIKRISHNAN , DOROTHEE HERMES , ANTONIUS MARIA BERNARDUS VAN MOL
IPC分类号： A61B6/00
摘要： The present invention relates to a device for aligning an X-ray grating to an X-ray radiation source, the device (10) comprising at least two flat X-ray grating segments (11-19); at least one alignment unit (31-39) for aligning one of the at least two flat X-ray grating segments; wherein the at least two flat X-ray grating segments (11-19) are arranged in juxtaposition and are forming an X-ray grating (20); wherein the at least two flat X-ray grating segments (11-19) each comprise a grating surface (41-49) for X-ray radiation, each grating surface (41-49) comprising a geometrical center; wherein normals (21-29) to each of the grating surfaces (41-49) define a common plane (73), wherein the normals (21-29) intersect the geometrical center of the grating surface (41-49); wherein at least a first of the at least two flat X-ray grating segments (11-19) is rotatable around an axis (131-139) that is perpendicular to the common plane (73); and wherein the first of the at least two flat X-ray grating segments (11-19) that is rotatable around the axis (131-139) is connected to a first of the at least one alignment unit (31-39). The invention provides a device (10) and a method (100) which provide an improved X-ray grating (20).
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公开(公告)号：US20210165114A1
公开(公告)日：2021-06-03
申请号：US16770974
申请日：2018-08-22
摘要： A radiation detector with first and second scintillator structures is disclosed. The first scintillator structure comprises a plurality of first scintillator pixels. The first scintillator pixels are separated by gaps, which may be filled with a reflective material to achieve an optical separation of the first scintillator pixels. The second scintillator structure is adapted to increase the absorption of radiation and the output of light. Thereto, the second scintillator structure overlaps at least partially the gaps between first scintillator pixels. The second scintillator structure is optically coupled to the first scintillator structure, so that light emitted by the second scintillator structure is fed into first scintillator pixels. The second scintillator structure may be mounted onto the first scintillator structure using additive manufacturing.
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公开(公告)号：US20170322320A1
公开(公告)日：2017-11-09
申请号：US15524696
申请日：2015-10-30
IPC分类号： G01T1/20 , H01L27/146 , G01T1/24
CPC分类号： G01T1/20 , G01T1/24 , H01L27/14625 , H01L27/14663 , H01L27/14685
摘要： The invention relates to a method for fabricating a pixelated scintillator wherein a pixelated scintillator-structure (211) and a connection-structure (200) are provided in such a way that the connection-structure is in mechanical contact with two adjacent pixels of the pixelated scintillator-structure. Moreover, the pixelated scintillator-structure comprises a first sintering-shrinking-coefficient and the connection-structure comprises a second sintering-shrinking-coefficient that is greater than the first sintering-shrinking-coefficient. In a further method step, the pixelated scintillator-structure and the connection-structure are sintered such that the gap (212) between the two adjacent pixels (201, 202) of the pixelated scintillator-structure is reduced. Furthermore, the invention also relates to a pixelated scintillator, a detector and an imaging apparatus.
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公开(公告)号：US20170139058A1
公开(公告)日：2017-05-18
申请号：US15322764
申请日：2015-06-01
CPC分类号： G01T1/2018 , B29C64/112 , B33Y10/00 , B33Y80/00 , G01T1/202
摘要： The present invention relates to a radiation detector device comprising a first array (120) of a plurality of columnar elements (125), wherein at least one of the columnar elements (125) comprises a base portion (126) and a protruding portion (127), and wherein at least one of the columnar elements (125) comprises a scintillating material and at least one of the columnar elements (125) is configured to generate a light ray by a radiation conversion; and a second array (130) of a plurality of photosensitive elements (135), wherein at least one of the photosensitive elements (135) is assigned to one of the columnar elements (125) and at least one of the photosensitive elements (135) is configured to detected the generated light ray and a read-out electronics circuit (150).
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公开(公告)号：US20220338824A1
公开(公告)日：2022-10-27
申请号：US17760923
申请日：2020-09-10
摘要： The present invention relates to an X-ray anti-scatter grid (10). The anti-scatter grid comprises a plurality of primary septa walls (20), and a plurality of secondary septa walls (30). The plurality of primary septa walls comprise an X-ray absorbing material. The plurality of primary septa walls are substantially parallel to one another. The plurality of secondary septa walls are located between adjacent pairs of walls of the plurality of primary septa walls such that each secondary septa wall is located between an adjacent pair of walls of the plurality of primary septa walls. Each secondary septa wall of the plurality of secondary septa walls is formed from a plurality of columnar structures (40) extending between the plurality of primary septa walls. The plurality of columnar structures comprise an X-ray absorbing material.
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公开(公告)号：US20210356608A1
公开(公告)日：2021-11-18
申请号：US17274258
申请日：2019-09-10
发明人： JOHANNES WILHELMUS MARIA JACOBS , ROLF KARL OTTO BEHLING , ROGER STEADMAN BOOKER , GEREON VOGTMEIER , ONNO JAN WIMMERS
IPC分类号： G01T1/20 , G01T1/24 , H01L25/04 , H01L31/0256
摘要： The present invention relates to a radiation detector (100) comprising: i) a substrate (110); ii) a sensor, which is coupled to the substrate, the sensor comprising a first array (120) of sensor pixels, a second array (130) of signal read-out elements, and an electronic circuitry which is configured to provide image data based on signals received from the signal read-out elements; iii) a transducer, which is coupled to the substrate and to the sensor, the transducer comprising a third array (140) of subpixels, wherein at least two subpixels are assigned to one sensor pixel; wherein the second array of signal read-out elements and the third array of subpixels correspond to each other; wherein each of the subpixels comprises a radiation conversion material.
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公开(公告)号：US20180024253A1
公开(公告)日：2018-01-25
申请号：US15550418
申请日：2016-02-03
CPC分类号： G01T1/1603 , A61B5/0024 , A61B5/0035 , A61B5/0075 , A61B5/0077 , A61B6/4417 , A61B6/563 , A61B8/4416 , A61B2562/0204 , A61B2562/0219 , A61B2562/0223 , A61B2562/12
摘要： The present invention relates to medical imaging, and in particular a medical imaging detector. In order to improve and facilitate the collection of information, e.g. for medical diagnosis, a medical imaging detector is provided that comprises a first sensor arrangement (12) and a second sensor arrangement (14). The first sensor arrangement is configured to provide a first type of image data belonging to a first imaging modality. The second sensor arrangement is configured to provide a second type of image data belonging to a second imaging modality. The first imaging modality is an X-ray imaging modality, while the second imaging modality is a non-X-ray imaging modality. The first sensor arrangement comprises one or a plurality of first sensor segments (16) arranged within a first circumferential line (18) defining a first imaging area (20). The second sensor arrangement comprises one or a plurality of second sensor segments (22) arranged within a second circumferential line (24) defining a second imaging area (26). The first imaging area and the second imaging area at least partly overlap.
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公开(公告)号：US20240261855A1
公开(公告)日：2024-08-08
申请号：US18567040
申请日：2022-05-31
摘要： In order to improve three-dimensional (3D) printing a high-aspect-ratio three-dimensional metal structures, there is provided a printing method that builds a wall comprising a center part made out of a metal-containing material and left and right parts made out of a plastic material forming first and second supporting wall elements. The plastic support material may be used to enable the build-up of a high-aspect-ratio 3D structure. The proposed printing strategy may be applicable to a cost-effective 3D printing technology, such as fused deposition molding (FDM).
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公开(公告)号：US20230375727A1
公开(公告)日：2023-11-23
申请号：US18031016
申请日：2021-10-09
发明人： HERFRIED KARL WIECZOREK , HERMAN STEGEHUIS , PETER LEX ALVING , JOHANNES WILHELMUS MARIA JACOBS
CPC分类号： G01T1/20181 , G01T1/2023 , G01T1/20184
摘要： The present invention relates to a combined imaging detector (10, 20) for detection of gamma and x-ray quanta comprising an integrating x-ray detector (11) comprising a first scintillator layer (12) and a photodetector array (13) and a second structured scintillator layer (14), optionally as part of a second gamma detector having a second photodetector array. The combined imaging detector can be used for X-ray and SPECT detection and uses the principle of current flat x-ray detectors. Different resolutions are used: high spatial resolution for x-ray imaging and low spatial resolution for SPECT imaging.
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公开(公告)号：US20230162880A1
公开(公告)日：2023-05-25
申请号：US17988800
申请日：2022-11-17
摘要： A multi-layer X-ray detector comprises a first X-ray converter, a first sensor, a second X-ray converter, a second sensor, and an internal anti-scatter device. The first sensor is located at a first sensor layer and is configured to detect radiation emitted from the first X-ray converter. The second sensor is located at a second sensor layer and is configured to detect radiation emitted from the second X-ray converter. The first X-ray converter and the first sensor form a first detector pair, and the second X-ray converter and the second sensor form a second detector pair. The internal anti-scatter device comprises a plurality of X-ray absorbing septa walls and is located between the first detector pair and the second detector pair. No structure of the internal anti-scatter device is located within either layer of the first detector pair, and no structure of the anti-scatter device is located within either layer of the second detector pair. The plurality of septa walls comprises a plurality of first septa walls substantially parallel to each other, and wherein a spacing between the first septa walls in a first direction is equal to an integer multiple n of detector pixel pitch of the first sensor and/or of the second sensor in the first direction, wherein n = 2, 3, 4, ... N.
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