| Identifying and tracking a guide wire in the coronary arteries during angioplasty from X-ray images. | |
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MedLine Citation:
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PMID: 9214795 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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During angioplasty, a guide wire (GW) is routinely placed in the coronary artery. Balloon inflation during angioplasty causes transient occlusion of the coronary artery and regional dysfunction. Thus, it is of major importance to monitor myocardial function, which may be impaired during this period. Since the GW moves with the coronary arteries, information regarding myocardial function can potentially be extracted from the GW motion. An algorithm is suggested which is a step toward such monitoring. The algorithm presented is a semiautomatic procedure for identifying and tracking the GW using specific characteristics of the GW. This algorithm is based on working in limited active windows. A preprocessing stage which enhances the GW by the use of a modified Laplacian filter or a modified Marr-Hildreth filter is introduced. The second stage of the algorithm is the tracking of the GW, which is based on fitting a second-degree polynomial to the GW using the Hough transform in each window. To further improve the results further modifications of the basic algorithms that were taken. A single set of parameters, which enabled good tracking for a large number of images taken during angioplasty, was fitted to the final algorithm. |
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Authors:
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D Palti-Wasserman; A M Brukstein; R P Beyar |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: IEEE transactions on bio-medical engineering Volume: 44 ISSN: 0018-9294 ISO Abbreviation: IEEE Trans Biomed Eng Publication Date: 1997 Feb |
Date Detail:
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Created Date: 1997-08-13 Completed Date: 1997-08-13 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0012737 Medline TA: IEEE Trans Biomed Eng Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 152-64 Citation Subset: IM |
Affiliation:
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Department of Biomedical Engineering, Julius Silver Institute, Technion-Israel Institute of Technology, Haifa, Israel. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms Angioplasty, Transluminal, Percutaneous Coronary / instrumentation*, methods, statistics & numerical data Artifacts Coronary Angiography / methods*, statistics & numerical data Filtration / methods Humans Microcomputers Radiographic Image Enhancement / methods Software Design |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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