Arcus aorta dallanma varyasyonlarının bilgisayarlı tomografi anjiyografiler ile değerlendirilmesi

Abstract

Amaç Tipik olarak, arcus aorta proksimalden distale doğru üç dal verir: truncus brachiocephalicus, arteria carotis communis sinistra ve arteria subclavia sinistra. Bu çalışmanın amacı, geniş bir örneklemde arcus aorta (AA) dallanma varyasyonlarının yaygınlığını belirlemek ve cinsiyet farklılıklarını değerlendirmektir. Gereç ve Yöntemler: Bu çalışma retrospektif, gözlemsel bir radyolojik anatomi çalışması olarak yürütülmüştür. Dallanma varyasyonları şu şekilde kategorize edilmiştir: Tip 1: Normal konfigürasyon (standart dallanmalı sol taraflı arcus aorta), Tip 2: Bovine ark, Tip 3: arteria vertebralis sinistra varyasyonu, Tip 4: arteria vertebralis sinistra ve Bovine ark, Tip 5: Sağ ve sol ortak carotis communis kökü, Tip 6: Aberan arteria subclavia dextra ve Tip 7: Sağ taraflı arcus aorta varyasyonları. Bulgular: Çalışmaya toplam 744 hasta (334 kadın, %44,9 / 410 erkek, %55,1) dahil edildi. Çalışma örnekleminde AA en sık Tip 1 dallanma tipinde görüldü. Tip 1 yaygınlık oranları kadınlarda %98,2, erkeklerde %98,3 ve genel popülasyonda %98,3 olarak bulundu. Çalışmada karşılaşılan diğer dallanma varyasyonları Tip 2, Tip 3, Tip 6 ve Tip 7 idi. Bu varyasyonların yaygınlığı sırasıyla %1,1, %0,3, %0,3 ve %0,1 olarak bulundu. Dallanma varyasyonlarının yaygınlığı açısından cinsiyetler arasında istatistiksel olarak anlamlı bir fark yoktu (p>0,05). Sonuçlar: Bu çalışma, AA varyantlarının çalışma örnekleminde nadiren bulunduğu sonucuna varmıştır. Her ne kadar sıklıkla asemptomatik ve tesadüfen karşılaşılsalar da, popülasyon yaygınlık farklılıklarının bilinmesinin klinik ve radyolojik değerlendirmelere katkıda bulunacağına inanıyoruz.

Keywords

• Arcus aorta
• Dallanma varyasyonları
• Bilgisayarlı tomografi anjiyografi
• varyasyonel anatomi

Ethical Statement

Çalışmaya başlamadan önce kurumumuz Girişimsel Olmayan Klinik Araştırmalar Etik Kurulu'ndan onay alınmıştır (Karar No:2022-5/29)

Evaluation of Aortic Arch Branching Variations with Computed Tomography Angiographies

Abstract

Objectives: Typically, aortic arch gives off three branches from proximal to distal: the brachiocephalic trunk, the left common carotid artery, and the left subclavian artery. This study aimed to determine the prevalence of aortic arch (AA) branching variations in a large sample and to assess gender differences. Materials and Methods: This study was conducted as a retrospective, observational radiologic-anatomy. The branching configurations were categorized as follows: Type 1: Normal configuration (left-sided aortic arch with standard branching), Type 2: Bovine arch, Type 3: Left vertebral artery variation, Type 4: Bovine arch with left vertebral artery variation, Type 5: Common origin of the right and left common carotid arteries, Type 6: Aberrant right subclavian artery, and Type 7: Right-sided aortic arch variations. Results: A total of 744 patients (334 females, 44.9% / 410 males, 55.1%) were included in the study. In the study sample, AA was most prevalent in Type 1 branching. Type 1 prevalence rates were 98.2%, 98.3%, and 98.3% in females, males, and the overall population, respectively. Other branching variations encountered in the study were Type 2, Type 3, Type 6, and Type 7. The prevalence of these variations was 1.1%, 0.3%, 0.3%, and 0.1%, respectively. There was no statistically significant difference in the prevalence of branching variations between genders (p>0.05). Conclusions: This study concluded that AA variants were rarely found in the study sample. Although they are often encountered asymptomatically and incidentally, we believe that knowledge of population prevalence differences will contribute to clinical and radiological assessments.

Keywords

• Aortic arch
• branching pattern
• computed tomography angiography
• variant anatomy

Ethical Statement

Prior to initiating the study, approval was obtained from our institution's Non-Interventional Clinical Research Ethics Committee (Decision No: 2022-5/29).

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