Coronary tracking display
DCFirst Claim
1. A system for displaying a segment of a coronary artery in a first cineangiogram, comprisingmeans for adjusting each frame of a second cineangiogram so that the segment is continually displayed at a substantially fixed location on a display screen in response to a set of adjustments for each said frame;
- andmeans for adjusting each frame of said first cineangiogram in response to said set of adjustments for each said frame of said second cineangiogram.
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Abstract
A method of displaying details of a coronary artery lesion in a cineangiogram, by adjusting each frame of the cineangiogram so that the lesion is continually displayed at a fixed location on a display. 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 a 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. The processor may make quantitative measurements of the cineangiogram and may display results of those measurements to aid review of the cineangiogram. Frames may be averaged to reduce quantum noise and to blur any structure noise; frames may be compared with prior cineangiograms to increase clarity or contrast. Coordinate adjustments for a cineangiogram may help guide therapeutic procedures, or may help enhance other imaging procedures such as fluoroscopy.
73 Citations
32 Claims
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1. A system for displaying a segment of a coronary artery in a first cineangiogram, comprising
means for adjusting each frame of a second cineangiogram so that the segment is continually displayed at a substantially fixed location on a display screen in response to a set of adjustments for each said frame; - and
means for adjusting each frame of said first cineangiogram in response to said set of adjustments for each said frame of said second cineangiogram. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for displaying a segment of a coronary artery in a cineangiogram, comprising
means for digitizing cineangiogram image frames; -
means for locating an arterial segment in said image frames; and means for digitally shifting said image frames to place the arterial segment in substantially the same viewing location in each one of said image frames. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A system for displaying a segment of a coronary artery in a cineangiogram, comprising
means for identifying said segment in a plurality of frames of said cineangiogram; - and
means for 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.
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15. A system for displaying a segment of a coronary artery in a cineangiogram, comprising
means for identifying said segment in a plurality of frames of said cineangiogram; -
means for 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 means for displaying each of said frames in its adjusted display position. - View Dependent Claims (16, 17, 18)
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19. A method of displaying a segment of a coronary artery in a first cineangiogram, comprising the steps of
adjusting each frame of a second cineangiogram so that the segment is continually displayed at a substantially fixed location on a display screen in response to a set of adjustments for each said frame; - and adjusting each frame of said first cineangiogram in response to said set of adjustments for each said frame of said second cineangiogram.
- View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A system for moving a catheter in a patient, comprising
means for producing an image of said catheter in said patient'"'"'s body in a plurality of frames; -
means for 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 means for displaying each of said frames in its adjusted display position. - View Dependent Claims (28, 29)
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30. A system for displaying a segment of a coronary artery in a cineangiogram having a plurality of frames, comprising
means for directing at least one said frame at a mirror disposed to reflect said frame onto a display; - and
means for adjusting a position of said mirror so that said at least one frame is reflected onto an adjusted location on said display.
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- 31. A method of displaying a segment of a coronary artery in a cineangiogram, comprising the step of adjusting each frame of the cineangiogram so that the segment is continually displayed at a substantially fixed location on a display screen.
Specification