- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04205110
Development and Validation of a Fast, Semi-Automated Hybrid Imaging Platform to Assess Coronary Atherosclerotic Plaque Morphology, Endothelial Shear Stress and Arterial Inflammation: A Proof of Principle Study (VALID-PET-CT) (VALID-PET-CT)
December 19, 2019 updated by: Barts & The London NHS Trust
Imaging the inside of coronary arteries (intravascular imaging) offers great insight into the assessment and treatment of coronary artery disease.
Over time, substances such as fat, cholesterol and calcium can build up into 'plaques' in the arteries, causing narrowings or even blockages.
These plaques can also rupture, causing cardiovascular events such as heart attacks or strokes.
By using ultrasound and infrared technology, intravascular imaging can help assess these plaques, however this is an invasive technique involving angiography.
Plaque composition, structure and stability can be affected by inflammation and the stress that the arteries are under.
The investigators have pioneered novel minimally-invasive methods for modelling arterial stress using computed tomography coronary angiography (CTCA), as well as imaging coronary arterial inflammation using a positron emission tomography (PET) scan.
Before embarking upon a large-scale clinical outcome study to determine whether these novel methods can improve risk prediction, the aim is to perform a proof-of-principle study to further develop our methodology for hybrid image analysis, and to validate this technique against high-resolution intravascular imaging as a surrogate marker of histology.
Study Overview
Status
Unknown
Conditions
Intervention / Treatment
Study Type
Observational
Enrollment (Anticipated)
7
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
40 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Sampling Method
Non-Probability Sample
Study Population
Stable angina patients with known coronary artery disease referred for further invasive assessment as part of routine clincal care
Description
Inclusion Criteria
- Age ≥40
- Stable angina, defined as typical symptoms with evidence of reversible ischemia in non-invasive test and/or documented obstructive coronary artery disease on coronary angiography
- Patient that is willing and can provide written informed consent.
Exclusion Criteria
- Acute coronary syndrome within <3 months
- Pregnancy
- Estimated glomerular filtration rate (eGFR) <60ml/min/1.73m²
- Previous bypass surgery
- Decompensated heart failure, or left ventricular ejection fraction less than 30%
- Patient allergic to contrast or cannot receive treatment with aspirin, heparin, or thienopyridines
- Anticipated life expectancy <2 years
- Flow limiting coronary artery disease in the proximal segments of all the 3 epicardial coronaries
- History of heart transplantation
- Patient that requires surgical revascularization
- Extensive coronary artery disease (i.e., multiple chronic total occlusions) or tortuous coronary anatomy that does not allow assessment of the
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Faesibility of co-registration of CTCA and PET-CT data
Time Frame: 12 months
|
All studied vessels will be dividen into 3 mm segments and the CTCA and PET-CT studies will be co-registered electronically.
The faesibility of this will be reported
|
12 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparing PET-CT, CTCA and intravascular imaging: plaque volume
Time Frame: 12 months
|
The co-registered vessels will be dividen into 3 mm segments and the CTCA and PET-CT data will be compared with intravascular imaging as gold standard to compare estimations of plaque burden expressed as volume
|
12 months
|
Comparing PET-CT, CTCA and intravascular imaging: plaque composition
Time Frame: 12 months
|
The co-registered vessels will be dividen into 3 mm segments and the CTCA and PET-CT data will be compared with intravascular imaging as gold standard to compare estimations of plaque composition (reported as type of plaque)
|
12 months
|
Comparing PET-CT, CTCA and intravascular imaging: haemodynamic forces
Time Frame: 12 months
|
The co-registered vessels will be divided into 3 mm segments and the CTCA and PET-CT data will be compared with intravascular imaging as gold standard to compare estimations of haemodynamic forces including plaque and endothelial shear stress
|
12 months
|
Comparing PET-CT, CTCA and intravascular imaging: presence of inflammation
Time Frame: 12 months
|
The co-registered vessels will be divided into 3 mm segments and the CTCA and PET-CT data will be compared with intravascular imaging as gold standard to compare assessment of markers of inflammation and vulnerability in the plaques identified
|
12 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Anticipated)
January 1, 2020
Primary Completion (Anticipated)
June 30, 2020
Study Completion (Anticipated)
June 30, 2020
Study Registration Dates
First Submitted
December 13, 2019
First Submitted That Met QC Criteria
December 18, 2019
First Posted (Actual)
December 19, 2019
Study Record Updates
Last Update Posted (Actual)
December 23, 2019
Last Update Submitted That Met QC Criteria
December 19, 2019
Last Verified
December 1, 2019
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Myocardial Ischemia
- Heart Diseases
- Cardiovascular Diseases
- Vascular Diseases
- Arteriosclerosis
- Arterial Occlusive Diseases
- Pain
- Neurologic Manifestations
- Pathological Conditions, Anatomical
- Vasculitis
- Coronary Disease
- Chest Pain
- Angina Pectoris
- Coronary Artery Disease
- Inflammation
- Angina, Stable
- Arteritis
- Plaque, Atherosclerotic
Other Study ID Numbers
- 19/LO/1086
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
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.
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