Method and system for restoration of a navigation data loss in image-guided navigation
First Claim
1. A method for restoring navigation failure information in a fluoroscopy-based imaging system, comprising:
- (a) obtaining a plurality of receiver navigation information using a calibration target attached to a supporting member of the imaging system, said calibration target including a plurality of receivers providing navigation information and the supporting member including a C-arm;
(b) identifying a navigation failure;
(c) determining a calibrated receiver navigation information using a calibration information defined corresponding to each C-arm position and a C-arm imaging position obtained during the navigation failure;
(d) estimating a receiver navigation information corresponding to the navigation failure by a coordinate transformation using the calibrated receiver navigation information, and a transmitter navigation information, the transmitter navigation information being selected corresponding to the receiver navigation information falling within a valid tracker range; and
(e) restoring the navigation failure information using estimated receiver navigation information.
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Accused Products
Abstract
A method for restoring navigation failure information in a fluoroscopy-based imaging system is disclosed. The method includes obtaining a plurality of receiver navigation information using a calibration target rigidly attached to a supporting member of the imaging system. The calibration target may include a plurality of receivers providing navigation information and the supporting member may be a C-arm. The method identifies a navigation failure and corresponding to the navigation failure a calibrated receiver navigation information is generated. The calibrated receiver navigation information is generated using a calibration information and a C-arm imaging position obtained during navigation failure. A receiver navigation information corresponding to the navigation failure is estimated using the calibrated receiver navigation information, and a transmitter navigation information. Also disclosed is a restoration unit for restoring navigation failure information in a fluoroscopy-based imaging system and a fluoroscopic imaging system using the restoration unit.
33 Citations
20 Claims
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1. A method for restoring navigation failure information in a fluoroscopy-based imaging system, comprising:
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(a) obtaining a plurality of receiver navigation information using a calibration target attached to a supporting member of the imaging system, said calibration target including a plurality of receivers providing navigation information and the supporting member including a C-arm; (b) identifying a navigation failure; (c) determining a calibrated receiver navigation information using a calibration information defined corresponding to each C-arm position and a C-arm imaging position obtained during the navigation failure; (d) estimating a receiver navigation information corresponding to the navigation failure by a coordinate transformation using the calibrated receiver navigation information, and a transmitter navigation information, the transmitter navigation information being selected corresponding to the receiver navigation information falling within a valid tracker range; and (e) restoring the navigation failure information using estimated receiver navigation information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A unit for restoring navigation failure information in a navigation system comprising:
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a calibration target attached to a fluoroscopy C-arm in the navigation system, said calibration target including a plurality of receivers providing receiver navigation information; an identifier associated with the receiver for identifying a navigation failure information; and a connector for providing receiver navigation information, transmitter navigation information, navigation failure information and selected C-arm position to a processor; wherein the processor is configured for generating receiver navigation failure information corresponding to the navigation failure information, based upon a calibration information, C-arm position and a transmitter navigation information by a coordinate transformation and for restoring the navigation failure information using estimated receiver navigation information. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A non-transitory computer readable medium containing computer instructions stored thereon for causing a computer processor to perform:
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a routine for obtaining a calibrated receiver navigation information using a calibration information and a C-arm position; a routine for obtaining navigation failure information; a routine for estimating receiver navigation failure information corresponding to the navigation failure information based on the calibrated receiver navigation information and transmitter navigation information by a coordinate transformation; and a routine for restoring the navigation failure information using estimated receiver navigation information. - View Dependent Claims (19, 20)
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Specification