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    Anatomical variations of the aortic arch branching pattern using CT angiography: a proposal for a different morphological classification with clinical relevance
    (Springer, 2022) Acar, Gulay; Cicekcibasi, Aynur Emine; Uysal, Emine; Koplay, Mustafa
    The aortic arch (AA) branching pattern variations are usually asymptomatic, but they may lead to complications during cardiovascular procedures. In this retrospective study, we aimed to analyze the frequency of anatomical variations of the AA and to develop a different approach of morphological classification based on radiological criteria. 1026 computed tomography angiography scans of adults were evaluated and the presence of left-sided (LAA) and right-sided (RAA) AA were determined in 1023 (99.71%) and 3 (0.29%) of patients, respectively. According to the number of branches, LAA branching pattern of each patient was subclassifed in five morphological types. Based on the order and type-specific reference points, an anomalous LAA variants were classified into 20 subtypes. Type 1 (Typical branching pattern) LAA was identifed in 781 (76.12%) of the patients. Among 242 aberrant LAA variants (four types, 23.58%), the most common subtypes; Type 2A with brachiocephalico-carotid trunk (BCT), Type 4A(1) with an aberrant left vertebral artery (ALVA), and Type 3A(1), in which BCT coexisted with ALVA, were observed in 17.6%, 3.6%, and 0.88% of the cases, respectively. The frequency of remaining LAA variants ranged from 0.39% to 0.097%. In addition, Type 3B(2) and Type 4C were first identified in our study. We observed Type I and II RAA in one female (0.097%) and two cases (male and female, 0.19%), respectively. Knowledge of AA branching variations is of great interest in neck and thoracic surgery and the new morphological types in clinically applicable form recommended in this study can be used in endovascular interventions.
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    Multidetector computed tomography and magnetic resonance imaging findings in pulmonary hydatid cysts
    (2019) Cebeci, Hakan; Özlü, Mustafa Yasir; Kılınçer, Abidin; Uysal, Emine; Durmaz, Mehmet Sedat; Uçar, Ramazan; Sunam, Güven Sadi
    Aim: Computed tomography (CT) and magnetic resonance imaging (MRI) are diagnostic modalities in pulmonary hydatid disease. We aimed to present CT and MRI findings in pulmonary hydatid disease. Material and Methods: CT and MRI findings of pulmonary hydatid cysts from January 2011 through June 2018 were evaluatedretrospectively. CT images of 112 patients and MRI images of 27 patients were evaluated. Patients’ gender and ages, lesion numberand distribution, concomitant organ involvement, complications, HU density of lesions on CT and signal characteristics of lesions onMRI were analyzed. T2 hypointense rim, T1 and T2 signal intensity, daughter vesicle and detached membranes were the evaluatedparameters on MRI. Results: 147 hydatid cyst lesions of 119 (66 female, 53 male) patients with a mean age of 39.4 19.6 years were included in the study 62 (52.1%) of patients had isolated lung involvement. 79 of 119 patients (66.4%) had solitary lung lesion. Mean CT density of cystswere 16 HU. 25 of 32 cysts showed T2 hypointense rim on MRI. Conclusion: Imaging plays important role in diagnosis and presurgical evaluation of pulmonary hydatid disease. CT is mostly usedin diagnosis; MRI should be a choice particularly in pediatric population.