Mehmet Salih AYDIN, Aydemir KOCARSLAN, Hasan CECE, Sema YILDIZ, Ekrem KARAKAŞ, Nurefşan BOYACI, Dilek Şen DOKUMACI

Multidetector computed tomography evaluation of aortic arch and branching variants

Amaç: Bu çalışmada aortik arkın ve dallarınınvaryasyonlarının sıklığı ile cinsiyetin bu sıklığa olasıetkileri araştırıldı.Çalışmaplanı: Ocak 2012 - Ocak 2013 tarihleriarasında 1170 hastanın rutin kontrastlı toraks çokkesitlibilgisayarlı tomografi görüntüleri aortik arkın vedallarının varyasyon sıklığı açısından retrospektifolarak incelendi.Bul gu lar: Aortik ark varyasyonlarının toplam oranı %10.9idi. En sık varyasyon 53 hastada (%4.5) aortik arktandirekt çıkan sol vertebral arter varyasyonuydu, bunu 30hastada (%2.6) brakiyosefalik trunkustan çıkan sol anakarotis arter varyasyonu takip etti. Aortik arktan direktçıkan sol vertebral arter varyasyonu erkeklerde kadınlarakıyasla iki kat daha fazlaydı.Sonuç: Türk nüfusunda aortik ark varyasyonlarınınsıklığı yüksektir. Aortik arkın dallanma varyasyonlarıvasküler cerrahlar, girişimsel radyologlar ve baş boyuncerrahları tarafından özel dikkat gerektiren önemliklinik durumlardır. Varyasyonlara girişimsel ya dacerrahi işlemlerden önce tanı koyulması gereklidir. Çokkesitli bilgisayarlı tomografi aortik arkın ve dallarınınvaryasyonlarının değerlendirilmesi için hızlı ve güvenilirbir tanı yöntemidir.

Aortik arkın ve dallanma varyasyonlarının çok kesitli bilgisayarlı tomografi ile değerlendirilmesi

Background: This study aims to investigate the prevalenceof variants of the aortic arch and its branches, as well aspossible effects of sex on the prevalence. Methods: Between January 2012 and January 2013,routine contrast-enhanced thoracic multidetector computedtomography images of 1,170 patients were analyzedretrospectively for the frequency of variants of aortic archand its branching. Results: The total rate of aortic arch variants was 10.9%.The most common variant was of the left vertebral arteryoriginating directly from the aortic arch in 53 patients (4.5%),followed by the left common carotid artery originating fromthe brachiocephalic trunk in 30 patients (2.6%). The variantof left vertebral artery directly originating from the aorticarch was twice more frequent in males than in females.Conclusion: The prevalence of variants of the aorticarch is high in the Turkish population. Aortic archbranching variants are critical clinical conditions requiringspecial attention of vascular surgeons, interventionalradiologists, and head and neck surgeons. They should bediagnosed before interventional and surgical procedures.Multidetector computed tomography is a rapid and safediagnostic modality for the evaluation of variants of theaortic arch and its branches.

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