Carotid plaque volume measurement in ischemic stroke: A pilot study

Author:

Koshy Kiren George1,M Veerendra Kumar1,Ramakrishnan Subasree1,Kenchaiah Raghavendra1,Arvinda H. R.2

Affiliation:

1. Department of Neurology, NIMHANS, Bengaluru, Karnataka, India

2. Department of Neuroimaging and Interventional Radiology, NIMHANS, Bengaluru, Karnataka, India,

Abstract

Objectives: Carotid atherosclerosis is a significant risk factor for acute ischemic stroke. Three-dimensional (3D) sonography is a new technique that can be used to analyze carotid plaque both quantitatively and qualitatively. The aim was to study carotid atherosclerosis in stroke patients and healthy controls in terms of plaque volume quantification by 3D ultrasound (US). Materials and Methods: An observational descriptive study was conducted in the stroke unit of a university referral hospital in South India. Patients with ischemic stroke between the ages of 20 and 70 years were studied, along with age- and sex-matched controls. Carotid sonography (2D and 3D) along with Doppler studies was done in all patients, using Philips Affiniti 50 US system. Vascular plaque quantification software was used to assess plaque volume. Results: Twenty-four subjects were recruited, and two were excluded from the study. Twelve were cases, and ten were controls. The mean carotid intima-media thickness (CIMT) (average CIMT in six sites in common carotid artery, three on each side) studied in patients was 0.65 ± 0.10 mm, while that for healthy subjects was 0.62 ± 0.06 mm. The mean plaque volume in patients with stroke or transient ischemic attack was 179.82 ± 310.3 mm3, and that in healthy subjects was 56.75 ± 69.6 mm3. Plaque heterogeneity, surface irregularity, and ulceration were found to be common in symptomatic carotid plaques. Conclusion: The 3D sonography is a non-invasive and simple feasible tool for the analysis of carotid plaque.

Publisher

Scientific Scholar

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