New Technologies to Determine Carotid Plaque Vulnerability in Patients With Significant Carotid Plaques

Carotid Artery Plaque Clinical Trial

Official title:

New Technologies to Determine Carotid Plaque Vulnerability: A Pilot Study to Assess Contrast-Enhanced Ultrasound (CEUS) and Shear Wave Elastography (SWE) in Patients With Significant Carotid Plaques

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03335033
• Other study ID #: 17-001863
• Status: Completed
• Phase: Phase 2
• Start date: November 15, 2017
• Est. completion date: January 30, 2022

Study information

• Verified date: November 2022
• Source: Mayo Clinic
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The researchers are trying to determine if the characterization of "vulnerable" carotid artery plaques can be accomplished with ultrasound-based methods that look for vessels in the plaque and measure the plaque stiffness.

Description:

All participants will receive a one time Carotid contrast-enhanced Ultrasound (CEUS) examination that may take 30-60 minutes. Follow up calls will be made to the Participants at 6, 12 ,24 and 36 months to ask about occurrence of major adverse cardiovascular events.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 54
• Est. completion date: January 30, 2022
• Est. primary completion date: January 30, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Subject has carotid plaque with > 50% stenosis
• Subject is able to understand the study procedure and provide informed consent

Exclusion Criteria:

• Subject is pregnant or breast feeding
• Subject is unable to provide informed consent
• Subject has contraindication to the use of the Lumason contrast agent.

Related Conditions & MeSH terms

• Carotid Artery Plaque
• Carotid Stenosis

Intervention

Combination Product:
• Contrast-enhanced ultrasound
Subjects will receive a low mechanical index (0.17-0.20) imaging during ultrasound contrast agent intravenous infusion. Real-time cine-loop including longitudinal and transverse images obtained at least 3 seconds before and 5 minutes after the appearance of the contrast effect in the lumen of the carotid artery will be acquired and digitally stored for offline analysis. Also use of a 3D ultrasound transducer to evaluate the feasibility of using US images with contrast to assess the residual diameter of the diseased vessel. Specifically, two 3D acquisitions of each lesion would be obtained after contrast has been injected.

Device:
• Shear Wave Elastography
Shear wave elastography will be performed with the General Electric Logiq E9 scanner acquiring images of each plaque in the longitudinal and transverse imaging planes. In each plane 10 measurements will be made and the in-phase/quadrature (IQ) data will be saved for further analysis. The plaque area in the imaging plane will be user-defined to extract the wave velocity values for a ROI analysis.
• Ultrasound Examination
A standard carotid US examination using Duplex imaging will performed using a linear array transducer to obtain longitudinal and transverse images. All ultrasound measurements will be made by a trained registered vascular technologist. Severity of stenosis of the plaque will be measured based on established protocol and guidelines.

Locations

Country	Name	City	State
United States	Mayo Clinic in Rochester	Rochester	Minnesota

Sponsors (1)

Lead Sponsor	Collaborator
Mayo Clinic

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of Subjects Who Completed All of the Ultrasound Examinations	Total number of subjects who completed all of the ultrasound examinations to determine visualization of arterial wall (contrast-enhanced ultrasound, 3-D volume ultrasound) and its mechanical properties (shear wave elastography).	1 year after recruitment

External Links

•   Mayo Clinic Clinical Trials