dc.contributor.author | Christodoulou, Christodoulos I. | en |
dc.contributor.author | Pattichis, Constantinos S. | en |
dc.contributor.author | Murray, V. | en |
dc.contributor.author | Pattichis, Marios S. | en |
dc.contributor.author | Nicolaïdes, Andrew N. | en |
dc.creator | Christodoulou, Christodoulos I. | en |
dc.creator | Pattichis, Constantinos S. | en |
dc.creator | Murray, V. | en |
dc.creator | Pattichis, Marios S. | en |
dc.creator | Nicolaïdes, Andrew N. | en |
dc.date.accessioned | 2019-11-13T10:39:18Z | |
dc.date.available | 2019-11-13T10:39:18Z | |
dc.date.issued | 2008 | |
dc.identifier.isbn | 978-3-540-89207-6 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/53728 | |
dc.description.abstract | Stroke is the third leading cause of death in the western world and a major cause of disability in adults. The objective of this work was to investigate the use of AM-FM representations for the characterization of carotid plaques ultrasound images for the identification of individuals with asymptomatic carotid stenosis at risk of stroke. To characterize the plaques using AM-FM features, we compute (i) the instantaneous amplitude, (ii) the instantaneous frequency magnitude and (iii) the instantaneous frequency angle in order to capture directional information. For each AM-FM feature, we compute the histograms over the plaque regions. The statistical K-nearest neighbour (KNN) classifier was implemented for the classification of the carotid plaques into symptomatic or asymptomatic using the leave-one-out methodology. Tests were carried out on a dataset of 274 carotid plaque ultrasound images (137 symptomatic + 137 asymptomatic), which showed that the AM-FM features performed slightly better than the traditional texture features and gave better results than simple histogram. Best results were obtained when a combination of the three AM-FM representations was used reaching a classification success rate of 71.5%. © 2009 Springer Berlin Heidelberg. | en |
dc.source | IFMBE Proceedings | en |
dc.source | 4th European Conference of the International Federation for Medical and Biological Engineering, ECIFMBE 2008 | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350637573&doi=10.1007%2f978-3-540-89208-3_130&partnerID=40&md5=73d00eac4ebd1a5457bd1743418e8273 | |
dc.subject | Statistical tests | en |
dc.subject | Classification | en |
dc.subject | Graphic methods | en |
dc.subject | Population statistics | en |
dc.subject | Ultrasonics | en |
dc.subject | Ultrasound imaging | en |
dc.subject | Image processing | en |
dc.subject | Data sets | en |
dc.subject | AM-FM | en |
dc.subject | Amplitude modulation | en |
dc.subject | K nearest neighbours (k-NN) | en |
dc.subject | Leave-one-out | en |
dc.subject | Instantaneous amplitude | en |
dc.subject | Instantaneous frequency | en |
dc.subject | Carotid plaques | en |
dc.subject | Texture features | en |
dc.subject | Carotid plaque | en |
dc.subject | Carotid stenosis | en |
dc.subject | Directional information | en |
dc.subject | Electric frequency measurement | en |
dc.subject | Handicapped persons | en |
dc.subject | Identification of individuals | en |
dc.subject | Ultrasound images | en |
dc.title | AM-FM representations for the characterization of carotid plaque ultrasound Images | en |
dc.type | info:eu-repo/semantics/conferenceObject | |
dc.identifier.doi | 10.1007/978-3-540-89208-3_130 | |
dc.description.volume | 22 | |
dc.description.startingpage | 546 | |
dc.description.endingpage | 549 | |
dc.author.faculty | 002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Πληροφορικής / Department of Computer Science | |
dc.type.uhtype | Conference Object | en |
dc.description.notes | <p>Conference code: 81647 | en |
dc.description.notes | Cited By :6</p> | en |
dc.contributor.orcid | Pattichis, Constantinos S. [0000-0003-1271-8151] | |
dc.contributor.orcid | Pattichis, Marios S. [0000-0002-1574-1827] | |
dc.gnosis.orcid | 0000-0003-1271-8151 | |
dc.gnosis.orcid | 0000-0002-1574-1827 | |