Patent US5054045A successfully refreshed from Google Patents.
US5054045A
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US
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Coronary tracking display
Assignee: Cedars-Sinai Medical Center
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Filing: 1990-11-14
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Granted: 1991-10-01
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Expires: 2010-11-14
Abstract
Abstract A method of displaying details of a coronary artery lesion in a cineangiogram, by digitally adjusting each frame of the cineangiogram so that the lesion is continually displayed at a fixed location on a display screen. The remaining cardiac anatomy appears to move, in background, past a stationary arterial segment, thus making the displayed arterial segment easier to identify and to examine by medical personnel. Cineangiographic image frames are digitized and processed by an image processor and the image frames are digitally shifted to place the arterial segment in substantially the same viewing location in each frame. Sequential image frames may be presented to the viewer as a stereoscopic pair, to produce pseudostereopsis. The arterial segment appears to the viewer in foreground, as if it was floating in front of the remaining cardiac anatomy. Image frames may be further processed to aid examination by medical personnel. Frames may be averaged to reduce quantum noise and to blur any structure noise. Frame averaging may be used to make numerical measurements of arterial cross-section.
Inventors
- 👤 James S. Whiting
- 👤 Neal Eigler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/48; A61B6/481; A61B6/50; A61B6/504; G; G06; G06T; G06T7/00; G06T7/20; G06T7/246; H; H04; H04N; H04N5/00; H04N5/30; H04N5/32; H04N5/3205; H04N5/321; H04N5/325; H05; H05G; H05G1/00; H05G1/08; H05G1/60
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
40 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the step of digitally adjusting each frame of the cineangiogram so that the segment is continually displayed at a substantially fixed location on a display screen.
Claim 2
Independent Claim
40 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the step of digitally adjusting each frame of the cineangiogram so that the segment is continually displayed at a substantially fixed location on a display screen.
Claim 3
Independent Claim
52 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the steps of digitizing cineangiogram image frames; locating an arterial segment in said image frames; digitally shifting said image frames to place the arterial segment in substantially the same viewing location in each one of said image frames.
Claim 4
Independent Claim
52 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the steps of digitizing cineangiogram image frames; locating an arterial segment in said image frames; digitally shifting said image frames to place the arterial segment in substantially the same viewing location in each one of said image frames.
Claim 5
Dependent Claim
39 words
A method as in claim 2, wherein said step of locating comprises the steps of displaying at least one of said image frames to an operator; and retrieving information indicating a location of said arterial segment from said operator.
Claim 6
Dependent Claim
16 words
A method as in claim 2, wherein said step of locating comprises the step of edge-detection.
Claim 7
Dependent Claim
19 words
A method as in claim 2, wherein sequential image frames are presented to a viewer as a stereoscopic pair.
Claim 8
Dependent Claim
18 words
A method as in claim 2, wherein image frames are further processed to aid examination by a viewer.
Claim 9
Dependent Claim
16 words
A method as in claim 2, comprising the step of averaging a plurality of said frames.
Claim 10
Dependent Claim
25 words
A method as in claim 7, comprising the step of computing a measure of vessel cross-section based on a result of said step of averaging.
Claim 11
Independent Claim
54 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the steps of identifying said segment in a plurality of frames of said cineangiogram; adjusting a display position of each of said frames so that said segment is placed in substantially the same viewing location in each of said frames.
Claim 12
Independent Claim
54 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the steps of identifying said segment in a plurality of frames of said cineangiogram; adjusting a display position of each of said frames so that said segment is placed in substantially the same viewing location in each of said frames.
Claim 13
Independent Claim
65 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the steps of identifying said segment in a plurality of frames of said cineangiogram; adjusting a display position of each of said frames so that said segment is placed in substantially the same viewing location in each of said frames; and displaying each of said frames in its adjusted display position.
Claim 14
Independent Claim
65 words
A method of displaying a segment of a coronary artery in a cineangiogram, comprising the steps of identifying said segment in a plurality of frames of said cineangiogram; adjusting a display position of each of said frames so that said segment is placed in substantially the same viewing location in each of said frames; and displaying each of said frames in its adjusted display position.
Claim 15
Dependent Claim
13 words
A method as in claim 10, wherein said frames comprise digital image frames.
Claim 16
Dependent Claim
39 words
A method as in claim 10, wherein said step of identifying comprises the steps of displaying at least one of said image frames to an operator; and retrieving information indicating a location of said arterial segment from said operator.
Claim 17
Dependent Claim
16 words
A method as in claim 10, wherein said step of identifying comprises the step of edge-detection.
Claim 18
Independent Claim
63 words
A method of moving a catheter in a patient, comprising the steps of producing an image of said catheter in said patient's body; adjusting a display position of each of said frames so that said image of said catheter is placed in substantially the same viewing location in each of said frames; and displaying each of said frames in its adjusted display position.
Claim 19
Independent Claim
63 words
A method of moving a catheter in a patient, comprising the steps of producing an image of said catheter in said patient's body; adjusting a display position of each of said frames so that said image of said catheter is placed in substantially the same viewing location in each of said frames; and displaying each of said frames in its adjusted display position.
Claim 20
Dependent Claim
16 words
A method as in claim 14, wherein said image of said catheter is an x-ray image.
Claim 21
Dependent Claim
57 words
A method as in claim 14, wherein said step of adjusting the steps of determining a set of adjustments to be applied to a first plurality of frames, based on a location of an arterial segment in a second plurality of frames; applying said set of adjustments to said display position of said image of said catheter.
References Cited (Backward Citations)
US4674107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-30 | 1995-04-01 | 1995-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-30 | 1999-04-01 | 1999-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-30 | 2003-04-01 | 2003-10-01 | $7700.00 | Window Closed / Lapsed |