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العنوان
CT-Angiography and Doppler Ultrasonography in the Evaluation of Carotid Artery Stenosis:
A Comparative Study/
الناشر
Ain Shams University.
المؤلف
Khalifa,Sherif Mohamed Mohamed .
هيئة الاعداد
باحث / شريف محمد محمد خليفه
مشرف / أحمد مصطفي محمد
مشرف / أسماء مجدي محمد
تاريخ النشر
2020
عدد الصفحات
118.p;
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الأشعة والطب النووي والتصوير
تاريخ الإجازة
1/4/2020
مكان الإجازة
جامعة عين شمس - كلية الطب - Radiodiagnosis
الفهرس
Only 14 pages are availabe for public view

from 118

from 118

Abstract

Background and purpose: Management of carotid artery stenosis is primarily based on the degree of luminal narrowing. The aim of this study is to compare the results of carotid doppler ultrasound (US) and CT angiography (CTA) for grading of carotid stenosis and for plaque characterization in symptomatic patients.
Methods: This is a cross sectional study with a total number of 35 consecutive patients having 70 carotid arteries for comparison. Grading of carotid stenosis was based on the NASCET criteria for CTA and the carotid consensus panel criteria for US. Each investigator was blinded to the results of the other modality.
Results: The majority of patients were aged from 60 to 69 years with male to female ratio of 3:2. Males were more commonly affected than females. The most common presenting symptom was recent stroke. Risk factors included; diabetes mellites and hypertension. Atherosclerotic ischemic heart disease was a present association. The carotid bulb and proximal ICA were the most common locations for carotid plaques. Kappa analysis with 95 % confidence intervals (CIs) was utilized to determine US – CTA agreement. Both modalities showed overall good agreement (kappa = 0.63) and the concordance was better for moderate and higher grades of stenosis than for low grade stenosis. The disagreement did not exceed one grade difference in our study sample. There was also good agreement as regards plaque morphology, while CTA was more sensitive than US in the detection of calcifications and plaque ulceration.
Conclusion: Doppler ultrasound when performed by an experienced sonographer can be used as a reliable first line modality for carotid stenosis grading and to categorize patients as medical and potentially surgical groups. CTA can be used as a confirmatory method for patients with borderline stenosis, for presurgical planning and for patients with suspected stenosis of the intracerebral circulation.