Affiliation:
1. AKDENIZ UNIVERSITY
2. SAĞLIK BİLİMLERİ ÜNİVERSİTESİ, İSTANBUL SANCAKTEPE ŞEHİR PROF. DR. İLHAN VARANK SAĞLIK UYGULAMA VE ARAŞTIRMA MERKEZİ, DAHİLİ TIP BİLİMLERİ BÖLÜMÜ, NÖROLOJİ ANABİLİM DALI
Abstract
Carotid stenosis is an important etiological factor in the forming of ischemic stroke. The weight of stroke which is formed as a result of extracranial internal carotid artery stenosis or occlusion differs according to the location, size of interaction, collateral supply, and the mechanisms those cause interact. Therefore it is important to measure the narrowness of the carotid with the calculation of the bifurcation angle. In this study, CT cross-sectional image sequences are used. The images are unsupervised classified, and the carotid veins are identified with the boundaries and centers of the clusters. Then, the angles are calculated with three center points of the veins from successive images. The center point of the calculation is from the vein which has the maximum area difference between one of the successive images. The results are evaluated using 5 samples with visual interpretation regarding the position and the correctness of the three successive images which have maximum area jump.
Reference22 articles.
1. [1] Demir, N. & Demir, S. (2015). Automated calculation of bifurcation carotid angle for analyzing the risk of carotis plaques by using carotid ct angiographic images, SPIE Sensing Technology + Applications, Baltimore, USA, 20 - 24 April 2015.
2. [2] Midi, I. & Afsar, N., (2010). Inme risk faktörleri. Klinik Gelişim 2010, Volume 10(1), 1-14.
3. [3] Bouthillier, A., van Loveren, H.R., Keller, & J.T. (1996Segments of the internal carotid artery.A new classification, Neurosurgery 1996, Volume 38, 425-433.
4. [4] Adams, R.D.; Victor, M. & Ropper, H.A. (1997). Cerebrovascular Disease. In Principles of Neurology. 6th ed. Mc Grawhill, New York,USA, 1997; Volume 34, 777-873, ISBN.
5. [5] Autret, A., Saudeau, D. & Bertrand, P. (1987). Stroke risk in patients with carotid stenosis. Lancet 1987, 1, 888-891.