Recovery of CT stroke hypodensity--An adaptive variational approach.
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| Titel: | Recovery of CT stroke hypodensity--An adaptive variational approach. |
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| Autoren: | Przelaskowski A; Faculty of Mathematics and Information Science, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland. Electronic address: arturp@mini.pw.edu.pl. |
| Quelle: | Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society [Comput Med Imaging Graph] 2015 Dec; Vol. 46 Pt 2, pp. 131-41. Date of Electronic Publication: 2015 Mar 30. |
| Publikationsart: | Journal Article; Research Support, Non-U.S. Gov't |
| Sprache: | English |
| Info zur Zeitschrift: | Publisher: Elsevier Science Country of Publication: United States NLM ID: 8806104 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-0771 (Electronic) Linking ISSN: 08956111 NLM ISO Abbreviation: Comput Med Imaging Graph Subsets: MEDLINE |
| Imprint Name(s): | Publication: Tarrytown Ny : Elsevier Science Original Publication: New York : Pergamon Press, c1988- |
| MeSH-Schlagworte: | Cerebral Infarction/*diagnostic imaging , Neuroimaging/*methods , Pattern Recognition, Automated/*methods , Radiographic Image Enhancement/*methods , Radiographic Image Interpretation, Computer-Assisted/*methods , Tomography, X-Ray Computed/*methods, Algorithms ; Humans ; Reproducibility of Results ; Sensitivity and Specificity |
| Abstract: | The present research was directed to effective image restoration with the extraction of ischemic edema signs. Computerized support of hyperacute stroke diagnosis based on routinely used computerized tomography (CT) scans was optimized to visualize the infarct extent more precisely. In particular, a beneficial support of time-limited appropriate decision of whether to treat the patient by thrombolysis is expected. Because of a limited accuracy in determining the area of core infarction, particularly in the early hours of symptoms' onset, a variational approach to sensed data recovery was applied. Proposed methodology adjusts fidelity norms and regularization priors integrated with simulated sensing procedures in a compressed sensing framework. Experimental study confirmed almost perfect recognition of ischemic stroke in a test set of over 500 CT scans. (Copyright © 2015 Elsevier Ltd. All rights reserved.) |
| Contributed Indexing: | Keywords: Compressed sensing; Computerized support of hyperacute stroke diagnosis; Content-oriented image restoration; Extraction of hypodense regions; Ischemic sign recognition; Variational image processing |
| Entry Date(s): | Date Created: 20150419 Date Completed: 20160923 Latest Revision: 20161126 |
| Update Code: | 20250114 |
| DOI: | 10.1016/j.compmedimag.2015.03.006 |
| PMID: | 25888185 |
| Datenbank: | MEDLINE |
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Nájsť tento článok vo Web of Science | Abstract: | The present research was directed to effective image restoration with the extraction of ischemic edema signs. Computerized support of hyperacute stroke diagnosis based on routinely used computerized tomography (CT) scans was optimized to visualize the infarct extent more precisely. In particular, a beneficial support of time-limited appropriate decision of whether to treat the patient by thrombolysis is expected. Because of a limited accuracy in determining the area of core infarction, particularly in the early hours of symptoms' onset, a variational approach to sensed data recovery was applied. Proposed methodology adjusts fidelity norms and regularization priors integrated with simulated sensing procedures in a compressed sensing framework. Experimental study confirmed almost perfect recognition of ischemic stroke in a test set of over 500 CT scans.<br /> (Copyright © 2015 Elsevier Ltd. All rights reserved.) |
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| ISSN: | 1879-0771 |
| DOI: | 10.1016/j.compmedimag.2015.03.006 |