US5730129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging of interventional devices in a non-stationary subject
Assignee: General Electric Co
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Filing: 1995-04-03
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Granted: 1998-03-24
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Expires: 2015-04-03
Abstract
Abstract A tracking system monitors the position of a device within a subject and superimposes a graphic symbol on a diagnostic image of the subject. Registration of the tracked location with the diagnostic image is maintained in the presence of subject motion by monitoring subject motion and adjusting the display to compensate for subject motion. Motion monitoring can be performed with ultrasonic, optical or mechanical methods. The display can be adjusted by modifying the displayed location of the device or it can be adjusted by translating, rotating or distorting the diagnostic image.
Inventors
- 👤 Robert David Darrow
- 👤 Charles Lucian Dumoulin
- 👤 Steven Peter Souza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/103; A61B5/11; A61B5/1113; A61B5/1114; A61B5/05; A61B5/055; A61B5/06; A61B5/1126; A61B5/1127; A61B5/1128; G; G06; G06T; G06T3/00; G06T3/02; A61B5/061; A61B5/062; A61B5/72; A61B5/7271; A61B5/7285; A61B5/7289
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A method for providing an image of a subject with a correctly registered image of an invasive device employing the steps of: a) acquiring a reference image corresponding to a specific point of a periodic motion cycle of said subject; b) measuring a physical parameter indicative of a point in the periodic motion cycle at a time t i substantially simultaneously with the acquisition of the reference image; c) measuring said device location at a time t d ; d) measuring the physical parameter at time t d ; e) distorting the reference image according to a change in the measured physical parameter between times t i and t d ; f) superimposing a representation of the device at the measured device location on the distorted image; and g) repeating steps "c"-"f" to produce a correctly registered real-time motion picture of the device and reference image.
Claim 2
Independent Claim
146 words
A method for providing an image of a subject with a correctly registered image of an invasive device employing the steps of: a) acquiring a reference image corresponding to a specific point of a periodic motion cycle of said subject; b) measuring a physical parameter indicative of a point in the periodic motion cycle at a time t i substantially simultaneously with the acquisition of the reference image; c) measuring said device location at a time t d ; d) measuring the physical parameter at time t d ; e) distorting the reference image according to a change in the measured physical parameter between times t i and t d ; f) superimposing a representation of the device at the measured device location on the distorted image; and g) repeating steps "c"-"f" to produce a correctly registered real-time motion picture of the device and reference image.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the periodic motion cycle is a respiratory cycle of the subject.
Claim 4
Dependent Claim
56 words
The method of claim 1 wherein the reference image is comprised of a plurality of pixels each at a location (x,y), the measured physical parameter is chest height h 1 , h 2 of the subject at times t i and t d , respectively and adjusted y' coordinates of each pixel is determined by: ##EQU3##
Claim 5
Dependent Claim
55 words
The method of claim 1 wherein the reference image is comprised of a plurality of pixels each at a location (x,y), the measured physical parameter is width w 1 , w 2 of the subject at times t i and t d , respectively and adjusted x' coordinates of each pixel is determined by: ##EQU4##
Claim 6
Dependent Claim
17 words
The method of claim 1 wherein the periodic motion cycle is a cardiac cycle of the subject.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-23 | 2001-09-22 | 2002-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-23 | 2005-09-22 | 2006-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-23 | 2009-09-22 | 2010-03-24 | $7700.00 | Window Closed / Lapsed |