Source: http://www.google.com/patents/US6120180?dq=inventor:%22Arthur+R.+Hair%22&ei=VAy0Tsa4NYTl0QGQiqWiBA
Timestamp: 2017-07-27 15:13:17
Document Index: 502649329

Matched Legal Cases: ['art 3', 'art 7', 'art 7', 'art 7', 'art 7', 'art 7', 'art 3']

Patent US6120180 - X-ray exposure system for 3D imaging - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsX-ray system has an X-ray apparatus on which an X-ray source and an X-ray reception receiver mounted so as to be adjustable relative to an examination subject for registering 2D projections of a region of the subject with subsequent 3D image reconstruction of the region of the subject, the X-ray apparatus...http://www.google.com/patents/US6120180?utm_source=gb-gplus-sharePatent US6120180 - X-ray exposure system for 3D imagingAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6120180 APublication typeGrantApplication numberUS 09/174,522Publication dateSep 19, 2000Filing dateOct 16, 1998Priority dateOct 17, 1997Fee statusPaidAlso published asDE19746093A1, DE19746093C2, EP0910990A1, EP0910990B1Publication number09174522, 174522, US 6120180 A, US 6120180A, US-A-6120180, US6120180 A, US6120180AInventorsRainer GraumannOriginal AssigneeSiemens AktiengesellschaftExport CitationBiBTeX, EndNote, RefManPatent Citations (11), Referenced by (61), Classifications (9), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetX-ray exposure system for 3D imaging
US 6120180 AAbstract
X-ray system has an X-ray apparatus on which an X-ray source and an X-ray reception receiver mounted so as to be adjustable relative to an examination subject for registering 2D projections of a region of the subject with subsequent 3D image reconstruction of the region of the subject, the X-ray apparatus carrying transmission and reception devices for acoustic waves or electromagnetic waves for determining projection angles that belong to the individual 2D projections and are required for the 3D image reconstruction, the transmission or the reception devices being co-moved with the X-ray system.
1. An X-ray exposure system comprising:an X-ray source which emits an X-ray beam; an X-ray receiver on which said X-ray beam is incident; a carrier to which said X-ray source and said X-ray receiver are mounted; holder means to which said carrier is movably mounted for moving said X-ray source and said X-ray receiver relative to an examination subject for obtaining a plurality of successive 2D projections of said examination subject respectively from a plurality of different projection directions, each of said 2D projections having a unique projection geometry of the X-ray source and the X-ray receiver at a point in time at which that 2D projection is obtained, said carrier and said holder means having a mechanical instability associated therewith which precludes accurate identification at the projection geometry via said carrier and said holder means; at least one first transmission device mounted to as to be co-movable with said X-ray source, said at least one first transmission device emitting non-ionizing radiation; at least one second transmission device mounted so as to be co-movable with said X-ray receiver, said at least one second transmission device emitting non-ionizing radiation; a mount that is stationarily disposed relative to said X-ray source and said X-ray receiver and said holder means; at least one receiver device disposed at said mount for receiving said non-ionizing radiation from said at least one first transmission device and said at least one second transmission device, said at least one receiver device emitting an electrical signal corresponding to said non-ionizing radiation received by said at least one receiver device; and computer means supplied with said signal for identifying said respective projection geometries therefrom, and for calculating said plurality of 2D projections, and for reconstructing a 3D image of said examination subject from said plurality of 2D projections. 2. An X-ray exposure system as claimed in claim 1 wherein said at least one first transmission device and said at least one second transmission device each radiates said non-ionizing radiation with a directional characteristic, and wherein said X-ray exposure system comprises two reception devices disposed at said means for mounting for respectively receiving said non-ionizing radiation from said at least one first transmission device and said at least one second transmission device.
An object of the present invention is to provide an X-ray system of the type initially described wherein the determination of the projection angles is simplified and is suitable for a stationary as well as for a mobile X-ray apparatus.
The single FIGURE is a schematic illustration of an X-ray exposure system for 3D imaging, constructed in accordance with the principles of the present invention.
In the present exemplary embodiment, the inventive X-ray system has a C-arm X-ray apparatus 1 with a mobile cart 3 movable on wheels 2. The C-arm X-ray apparatus 1 has a lifting mechanism 4 that is only schematically indicated in the FIGURE, with a column 5 having a longitudinal axis A around which the column 5 can be rotated in the direction of the double arrow α. A holder 6 is arranged at the column 5, a bearing part 7 for mounting a C-arm 8 being in turn arranged at the holder 6. The C-arm 8 has an X-ray source 9 and an X-ray receiver 10 lying opposite one another at its two ends, that are arranged relative to one another so that a central ray ZS of an X-ray beam emanating from the X-ray source 9 strikes the X-ray receiver 10 approximately centrally. In a known way, the C-arm 8 is seated at the bearing part 7 so as to be adjustable manually or motor-driven in the direction of the double arrow a along its circumference in a way not shown in greater detail. In a known way, the bearing part 7 is rotatable around a common axis B of the holder 6 and the bearing part 7 (see the double arrow β, angulation) and is seated at the holder 6 so as to be displaceable in the direction of the axis B (see double arrow b). With the assistance of the lifting device 4, the C-arm 8, which is connected to the column 5 of the lifting device 4 via the bearing part 7 and the holder 6, is vertically adjustable relative to the cart 3.
For registering 2D projections from different projection angles, the C-arm 8 is motor-adjusted along its circumference in the direction of the double arrow a in an angular range of approximately 200° around the body region of the patient P to be examined and visually displayed, with approximately 50 through 100 2D projections of the body region of the patient P being registered from different projection directions.
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KGTomographic x-ray apparatus and methodEP2868277A1Nov 4, 2013May 6, 2015SurgivisioMethod for reconstructing a 3D image from 2D X-ray imagesEP3175790A1Nov 4, 2013Jun 7, 2017SurgivisioMethod for reconstructing a 3d image from 2d x-ray imagesEP3175791A1Nov 4, 2013Jun 7, 2017SurgivisioMethod for reconstructing a 3d image from 2d x-ray imagesWO2005013828A1 *Aug 9, 2004Feb 17, 2005Xoran Technologies, Inc.Intraoperative imaging systemWO2009058046A1May 19, 2008May 7, 2009Zakrytoe Aktsionernoe Obschestvo 'impuls'Method for calibrating a digital x-ray apparatus (variants)WO2015063286A1Nov 3, 2014May 7, 2015SurgivisioMethod for reconstructing a 3d image from 2d x-ray images* Cited by examinerClassifications U.S. Classification378/206, 378/197International ClassificationA61B6/00Cooperative ClassificationA61B6/547, A61B6/583, A61B6/4441European ClassificationA61B6/54H, A61B6/44J2B, A61B6/58D2Legal EventsDateCodeEventDescriptionOct 16, 1998ASAssignmentOwner name: SIEMENS AKTIENGESELLSCHAFT, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GRAUMANN, RAINER;REEL/FRAME:009524/0013Effective date: 19981016Feb 13, 2004FPAYFee paymentYear of fee payment: 4Feb 11, 2008FPAYFee paymentYear of fee payment: 8Feb 6, 2012FPAYFee paymentYear of fee payment: 12Jun 28, 2016ASAssignmentOwner name: SIEMENS HEALTHCARE GMBH, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SIEMENS AKTIENGESELLSCHAFT;REEL/FRAME:039271/0561Effective date: 20160610RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services