 Mechanical counter |
| OF THE PREFERRED EMBODIMENT Referring now to the drawing, a mechanical counter 10 is disclosed ... |
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| Scan system |
| What is claimed is: 1. A currency processing system for analyzing and sorting a quantity of bills ... |
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| Key storage rack |
| OF THE DRAWINGS Referring now to the drawings and particularly to FIG. 1, the combination key rack ... |
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| Photometric system |
| OF THE INVENTION Referring now to the drawing one embodiment of a photometric system according to ... |
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| Method and apparatus for measuring thermal neutron absorption cross-section |
| Accordingly, an apparatus according to the present invention measures the thermal neutron ... |
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| Centrifugal clutch |
| The present invention relates to centrifugal clutches. More particularly, the present invention ... |
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| Thermal damper assembly |
| We claim: 1. A damper assembly for conserving fuel consumption in a furnace comprising baffle means ... |
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| Apparatus for counting sheets and discriminating different kinds thereof |
| What is claimed is: 1. In an apparatus for counting bendable sheets and discriminating different ... |
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| Electronically controlled braking means for a document handling machine |
| OF THE INVENTION Before considering the electronic control means of the present invention it is ... |
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| Feed mechanism for sequentially separating documents, sheets, coupons and the like |
| I claim: 1. A document separation system for separating sheets from a stack one at a time in a ... |
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Coronary tracking display
| Details |
Inventors: Whiting, James S.; Eigler, Neal;
Assignee: Cedars-Sinai Medical Center (Los Angeles, CA)
Primary Examiner: Church; Craig E.
Assistant Examiner:
Attorney, Agent or Firm: Lyon & Lyon
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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DETAILED DESCRIPTION The invention provides 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.
As a result, 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.
In a preferred embodiment, 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.
In a preferred embodiment, sequential image frames may be presented to the viewer as a stereoscopic pair, to produce pseudostereopsis.
As a result, the arterial segment appears to the viewer in foreground, as if it was floating in front of the remaining cardiac anatomy.
Moreover, image frames may be further processed to aid examination by medical personnel.
For example, frames may be averaged to reduce quantum noise and to blur any structure noise.
In a preferred embodiment, frame averaging may be used to make numerical measurements of arterial cross-section.
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Image Analysis 
