Related Experiment Video
Updated: May 20, 2026

Point of Care Transcranial Color-Coded Duplex Ultrasound of the Middle Cerebral Artery
Published on: August 9, 2024
Prevalence of symptomatic intracranial atherosclerosis in Caucasians: a prospective, multicenter, transcranial
Georgios Tsivgoulis1, Konstantinos Vadikolias, Ioannis Heliopoulos
1Department of Neurology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece; Second Department of Neurology, School of Medicine, University of Athens, Attikon Hospital, Athens, Greece.
Insights
Symptomatic intracranial atherosclerosis (SIA) affects nearly 10% of Caucasian patients hospitalized with acute cerebral ischemia. Key risk factors include diabetes and hypertension, highlighting the need for improved detection strategies.
Area of Science:
- Neurology
- Vascular Neurology
- Diagnostic Imaging
Background:
- Limited data exists on symptomatic intracranial atherosclerosis (SIA) prevalence in Caucasian populations.
- Acute cerebral ischemia (ACI) is a significant health concern with various underlying causes.
Purpose of the Study:
- To investigate the prevalence of SIA in Caucasian patients hospitalized with ACI.
- To identify risk factors associated with SIA in this demographic.
Main Methods:
- Prospective, multicenter Transcranial Doppler sonography (TCD) study.
- Inclusion of consecutive ACI patients over 24 months.
- Diagnosis of >50% intracranial stenosis using SONIA trial criteria, confirmed by angiography (MRA/CTA) and evidence of cerebral infarction.
Main Results:
- SIA was identified in 9.2% of 467 ACI patients (43 individuals).
- The most frequent locations for SIA were M1MCA (34.9%) and TICA (18.8%).
- Diabetes mellitus (OR: 4.25) and hypertension (OR: 2.41) were independently associated with SIA.
Conclusions:
- SIA prevalence is nearly 10% in Caucasian patients with ACI.
- Findings suggest a need for enhanced collaborative efforts among stroke physicians for SIA detection.
- Further research may refine diagnostic yield and management strategies for SIA in Caucasian ACI patients.
Background:
There are limited data available regarding symptomatic intracranial atherosclerosis (SIA) prevalence in Caucasians. We sought to investigate SIA prevalence among Caucasian patients hospitalized with acute cerebral ischemia (ACI) in a prospective, multicenter Transcranial Doppler sonography (TCD) study.
Methods:
Consecutive patients with ACI were prospectively evaluated with TCD over a 24-month-period. The previously validated criteria of SONIA trial were used for detection of >50% intracranial stenosis with TCD. Brain angiography was performed to confirm the diagnosis in cases with abnormal TCD findings. SIA was diagnosed when there was evidence of a cerebral infarction in the territory of the stenotic artery (identified by TCD and confirmed by Magnetic resonance angiography [MRA]/Computed tomography angiography [CTA]).
Results:
A total of 467 consecutive patients with ACI (60.4% men, mean age 58 ± 14 years) were evaluated. SIA was documented in 43 patients (9.2%; 95%CI: 6.9%-12.2%). The most common SIA location was M1MCA (34.9%) followed by TICA (18.8%). Diabetes mellitus (OR: 4.25, 95%CI: 2.18-8.26; P < .001) and hypertension (OR: 2.41, 95%CI: 1.02-5.67; P = .045) were independently associated with SIA on multivariate models adjusting for potential confounders.
Conclusions:
SIA was identified in almost 10% of patients admitted with symptoms of ACI. These preliminary findings support further collaborative initiatives among stroke physicians to increase the yield of SIA detection in Caucasian patients with ACI.
Related Concept Videos
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Transient Ischemic Attack l: Introduction
