NCT04443439

Brief Summary

Intracranial artery stenosis is an important cause of ischemic stroke, but the degree of intracranial artery stenosis is not completely matched with the symptoms of ischemic stroke. Asymptomatic carotid stenosis (ACS) refers to does not appear related neurological symptoms of carotid stenosis and stroke or transient ischemic attack of carotid stenosis, did not happen cerebrovascular events such as stroke, but there have been a different degree of cognitive impairment, be badly in need of development of noninvasive imaging methods, objective evaluation of the ACS group cognitive impairment, and predict the ACS risk of ischemic stroke. Therefore, this topic proposed comprehensive cognitive assessment, CTA, double modal MRI techniques, clinical and biochemical indicator detection, mathematical modeling and statistical analysis techniques, assess the ACS group and normal person the cognitive ability, the difference of NVC and local perfusion, and follow-up ACS crowd of ischemic stroke and other cardiovascular events, discuss ACS and cognitive impairment, the correlation of NVC and local perfusion abnormalities, screening of radiographic predictor of ischemic stroke, and in the follow-up of ACS population in testing the sensitivity of the series of indicators and specific degrees.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
100

participants targeted

Target at P50-P75 for all trials

Timeline
7mo left

Started Oct 2020

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress91%
Oct 2020Dec 2026

First Submitted

Initial submission to the registry

May 27, 2020

Completed
27 days until next milestone

First Posted

Study publicly available on registry

June 23, 2020

Completed
4 months until next milestone

Study Start

First participant enrolled

October 9, 2020

Completed
6.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 15, 2026

Expected
16 days until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Last Updated

October 25, 2022

Status Verified

October 1, 2022

Enrollment Period

6.1 years

First QC Date

May 27, 2020

Last Update Submit

October 23, 2022

Conditions

Outcome Measures

Primary Outcomes (1)

  • Dynamic change and correlation analysis of multi-dimensional features of ACS degree and cognitive impairment

    The Montreal cognitive assessment (MoCA) scale was used to evaluate the differences in cognitive function between ACS and the healthy control group in different dimensions, and the horizontal correlation analysis between ACS and cognitive impairment was conducted according to the dimensions of cognitive impairment and the degree of ACS.

    2020.01

Study Arms (1)

No related neurological symptoms and transient ischemic attack

Mild stenosis group: CTA suggested carotid stenosis \< 30%; Moderate stenosis group: CTA suggested carotid stenosis of 30-69%; Severe stenosis group: CTA indicated carotid stenosis ≥70%;

Device: GE Discovery MR750 3.0t superconducting MRI

Interventions

T2WI, FLAIR, DWI, 3D BRAVO, 3D-ASL, rs-fMRI, DKI sequences to exclude other organic lesions

No related neurological symptoms and transient ischemic attack

Eligibility Criteria

Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

No carotid stenosis - related neurological symptoms and transient ischemic attacks (50 patients in each group, 25 males and 25 females).

You may qualify if:

  • Mild stenosis group: CTA suggested carotid stenosis \< 30%;
  • Moderate stenosis group: CTA suggested carotid stenosis of 30-69%;
  • Severe stenosis group: CTA indicated carotid stenosis ≥70%;

You may not qualify if:

  • dementia, MMSE score \< 21;
  • previous carotid stenosis related neurological symptoms or transient ischemic attack;
  • other craniocerebral lesions, such as craniocerebral trauma, tumor, inflammation, and complications of great vessels (cerebral infarction or cerebral malacia);
  • contraindications for MRI examination;
  • recent use of psychoactive drugs or hormones.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Wen Wang

Xi'an, 710038, China

RECRUITING

MeSH Terms

Conditions

Cerebrovascular Disorders

Condition Hierarchy (Ancestors)

Brain DiseasesCentral Nervous System DiseasesNervous System DiseasesVascular DiseasesCardiovascular Diseases

Central Study Contacts

Wen Wang, Ph.D.

CONTACT

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director of radiology

Study Record Dates

First Submitted

May 27, 2020

First Posted

June 23, 2020

Study Start

October 9, 2020

Primary Completion (Estimated)

November 15, 2026

Study Completion (Estimated)

December 1, 2026

Last Updated

October 25, 2022

Record last verified: 2022-10

Locations