Automated correlation of intravascular ultrasound images with angiography : an alternative to three-dimensional reconstructions /
analysis accessed the stored images for processing. At least
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | analysis accessed the stored images for processing. At least angiography provides an accurate alternative to three- automatically correlate IVUS images with their corresponding catheter were performed in each model and acquired images computer algorithm using vascular models of the aorta and Contrast angiography is the present standard for imaging of correlation point. This declined to less than 3 mm when corresponding position on the angiogram was displayed. Error dimensional reconstruction algorithms. ileo-femoral vessels. Artificial plaques were placed at in a side-by-side format. We verified the accuracy of this IVUS frames with their expected locations on the angiogram. locations on contrast angiograms, and to display both images matched with its position on its corresponding angiogram. obtained. Serial timed pullbacks using a 20 @ ultrasound of correlation points. There was an inverse relation between one IVUS image containing a known landmark was then visually provides advantages for the study of arterial wall pathology. pullback distance of 130 mm (relative error 3%) with only one that computer based correlation of IVUS images with The computer algorithm automatically correlated the remaining The IVUS images could then be scrolled through while their the measured errors. The maximum error was 4 mm over a total the number of IVUS points visually matched in the models and the vascular system, but intravascular ultrasound (IVUS) three or more points were used. These results demonstrate To enhance such studies, we developed a computer algorithm to various sites throughout the models. The models were filled was measured after using the procedure with various numbers were sampled, digitized, and stored. A computer algorithm with iodinated contrast and radiographic images were written using a package for image processing and mathematical |
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| Item Description: | "Major subject: Bioengineering". Vita. |
| Physical Description: | ix, 53 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |