- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01879397
Pilot Study of Ultrasonic Determined Carotid Plaque Composition (UMP)
Ultrasonic Mapping of Carotid Plaque Composition
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Stroke is a major cause of morbidity and mortality among patients with cardiovascular disease and the major cause of long-term disability in the United States. Current imaging modalities can determine the severity of luminal stenosis resulting from plaque, as in the carotid arteries. However, cerebrovascular accidents (CVAs) are often associated with the rupture of unstable plaques located in regions with a non-significant degree of luminal stenosis. Thus up to 50% of high-risk atherosclerotic plaques may go undetected and untreated. Plaque composition is an additional and perhaps, more important risk factor for CVA rather than stenosis severity alone. Accurate identification of these high-risk, rupture-prone plaques may potentially prevent CVAs in a significant number of patients.
The data collected during this study (ultrasonic backscatter and histologically processed carotid plaque) will provide the basis for a novel algorithm to add plaque composition information to the plaque size and location information that is currently provided by standard ultrasound imaging. The input parameters for the algorithm are derived from two types of non-invasive ultrasound data: spectral parameters and acoustic radiation force impulse (ARFI) data. Spectral parameters are extracted from the frequency content of the backscattered diagnostic ultrasound signals. These are the same signals currently used for imaging, however, imaging relies solely on the strength of the signal to form the image and ignores the spectral information. Thus spectral analysis is an approach to use the information which is sensitive to the number and nature of the scatterers. In contrast ARFI techniques provide information on the stiffness of the tissue. ARFI is based on using a ultrasonic push pulse to slightly move the tissue (displacement on the order of microns) and an image of the relative displacements of the tissue (ARFI image) is created. The ARFI derived data and the spectral parameters will be combined with clinically available measures currently used for diagnosis of carotid stenosis to form the input parameters for the algorithm. In order to train and test the algorithm the plaque removed during surgery will be collected and the histology slides prepared from these plaques. This histology review provides the 'gold' standard for training and testing the algorithm. The majority of these matched sets (67%) will be used for training the algorithm. While the remainder (33%) will provide a test of the accuracy of the algorithm for these types of matched data. The sensitivity and specificity for each tissue type defined during the histology review will be reported.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Ohio
-
Cleveland, Ohio, United States, 44195
- Cleveland Clinic
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
CEA Cohort:
Inclusion Criteria:
- Age ≥40years
- Scheduled to undergo CEA for clinically significant carotid stenosis
- CEA is being performed for carotid stenosis of one or more of the following vessels: Internal Carotid Artery (ICA), distal end of the Common Carotid Artery (CCA), and/or CCA bulb.
Exclusion Criteria:
- Pregnancy
- Prior surgery or intervention involving the carotid artery
- Prior stent in the carotid artery
- Unable to provide informed consent
- CEA for carotid stenosis for proximal CCA only (ICA and distal CCA are not involved)
- CEA is scheduled for non-atherosclerotic vascular disease (e.g.,. fibromuscular dysplasia or systemic vasculitis)
- Unable to understand English language.
Normal Cohort:
Inclusion Criteria
- Age ≥40years
Exclusion Criteria
- Pregnancy
- Prior surgery or intervention involving the carotid artery (including CEA)
- Prior stent in the carotid artery
- Unable to provide informed consent
- Unable to understand English language.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
CEA Group
Subjects with atherosclerotic stenosis of the carotid artery and are scheduled for a clinically indicated Carotid Endarterectomy (CEA) procedure to remove the atherosclerotic plaque.
Prior to CEA procedure, a research ultrasound exam will be performed.
The plaque tissue removed during the CEA will be collected and processed into histological slides.
|
Collection of backscattered ultrasound data during non-invasive ultrasound exam
|
Normal Group
Subjects who are not scheduled for a Carotid Endarterectomy (CEA) procedure and have had no prior carotid artery interventions.
Subjects will have a Research Ultrasound Exam performed.
|
Collection of backscattered ultrasound data during non-invasive ultrasound exam
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Classification Algorithm Error Rate
Time Frame: Baseline
|
Classification of carotid artery plaque is produced by an algorithm that uses the QUS and ARFI derived parameters corresponding to a given region in the plaque to produce a classification of the plaque region into one of the following: calcium, fibrous, necrotic, or hemorrhagic.
Error rates from both the training and test data sets will be reported.
|
Baseline
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: D. Geoffrey Vince, PhD, The Cleveland Clinic
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 12-797
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Atherosclerosis
-
University Hospital, CaenUnknownPeripheral Arterial Disease | Atherosclerosis Obliterans | Atherosclerosis Right Leg | Atherosclerosis Left LegFrance
-
Nantes University HospitalAbbottCompletedAtherosclerosis ObliteransFrance
-
Central Hospital, Nancy, FranceSuspended
-
Federal University of São PauloCompletedAtherosclerosis of ArteryBrazil
-
MedtronicActive, not recruitingAtherosclerosis of Femoral Artery | Obstructive Disease | Atherosclerosis of Popliteal ArteryFrance
-
Cabinet de Medecine Interne Générale Demetrio PitarchCompletedAtherosclerosis of Artery
-
Emory UniversityThe Robert W. Woodruff FoundationCompleted
-
Korea UniversityMinistry of Health & Welfare, KoreaCompletedAtherosclerosis | Noninvasive Imaging of AtherosclerosisKorea, Republic of
-
Zhejiang Zylox Medical Device Co., Ltd.RecruitingAtherosclerosis of Femoral ArteryGermany
-
VA Office of Research and DevelopmentCompletedSaphenous Vein Graft AtherosclerosisUnited States
Clinical Trials on Research Ultrasound Exam
-
University of Campania "Luigi Vanvitelli"Completed
-
GE HealthcareCompletedUltrasound Use in Emergency/Medical CareCanada
-
Columbia UniversityNational Eye Institute (NEI)Completed
-
GE HealthcareCompletedUltrasound ExamsIndia
-
Rockefeller OtengKwame Nkrumah University of Science and Technology; Komfo Anokye Teaching HospitalCompleted
-
Kai SchoenhageUnknown
-
The Cleveland ClinicCompletedUltrasonography | Proximal Humerus Interosseous Venous Access | Anatomic LandmarkUnited States
-
Mayo ClinicCompletedCervical DilationUnited States
-
Fondation Ophtalmologique Adolphe de RothschildCompletedTumor of the OrbitFrance