Coronary tracking display
DCFirst Claim
1. A method of displaying a segment of a coronary artery in a cineangiogram, comprising the step ofdigitally adjusting each frame of the cineangiogram so that the segment is continually displayed at a substantially fixed location on a display screen.
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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.
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Citations
16 Claims
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1. 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.
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2. 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. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. 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.
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10. 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. - View Dependent Claims (11, 12, 13)
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14. 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. - View Dependent Claims (15, 16)
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Specification