NCT05138289

Brief Summary

This study will evaluate the level of agreement between noninvasive CCTA (coronary computed tomography angiography)-based quantification and characterization of coronary atherosclerosis and invasive IVUS (intravascular ultrasound).

Trial Health

87
On Track

Trial Health Score

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

Enrollment
258

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Oct 2021

Geographic Reach
1 country

1 active site

Status
completed

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

September 24, 2021

Completed
18 days until next milestone

Study Start

First participant enrolled

October 12, 2021

Completed
2 months until next milestone

First Posted

Study publicly available on registry

November 30, 2021

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 8, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 8, 2022

Completed
2.2 years until next milestone

Results Posted

Study results publicly available

January 29, 2025

Completed
Last Updated

August 22, 2025

Status Verified

August 1, 2025

Enrollment Period

1.1 years

First QC Date

September 24, 2021

Results QC Date

December 18, 2024

Last Update Submit

August 21, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Comparison of Total Plaque Volume

    Level of agreement between total plaque volume measured by AI-QCPA (Artificial intelligence quantitative coronary plaque analysis) and IVUS (intravascular ultrasound).

    13 months

Interventions

Compare total plaque volume with IVUS obtained during ICA (invasive coronary angiography)

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Clinically stable patients with known CAD who have a CCTA showing stenosis in at least one major epicardial vessel of stentable/graftable diameter and in whom clinically-indicated IVUS is planned.

You may qualify if:

  • Age ≥18 years
  • Clinically stable patient with known CAD
  • CCTA showing stenosis in at least one major epicardial vessel of stentable/graftable diameter, in whom clinically indicated IVUS is planned within 45 days of the CCTA and FFRct available
  • FFRct successfully processed
  • Willing to comply with all aspects of the protocol
  • Agrees to be included in the study and able to provide written informed consent.

You may not qualify if:

  • \. CCTA showing no stenosis
  • Uninterpretable CCTA by HeartFlow assessment, in which image quality prevents FFRCT from being processed.
  • Acute chest pain
  • CABG (coronary artery bypass graft) prior to CCTA acquisition
  • Prior history of PCI for 3 or more vessels
  • MI (myocardial infarction) less than 30 days prior to CCTA or between CCTA and ICA.
  • Suspicion of acute coronary syndrome (acute myocardial infarction or unstable angina)
  • Known complex congenital heart disease
  • Tachycardia or significant arrhythmia
  • Subject requires an emergent procedure
  • Evidence of ongoing or active clinical instability, including acute chest pain (sudden onset), cardiogenic shock, unstable blood pressure with systolic blood pressure \<90 mmHg, and severe congestive heart failure (NYHA \[New York Heart Association\] III or IV) or acute pulmonary edema
  • Any active, serious, life-threatening disease with a life expectancy of less than 2 months
  • Currently enrolled in another study utilizing FFRCT or in an investigational trial that involves a non-approved cardiac drug or device
  • Persons under the protection of justice, guardianship, or curatorship

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

HeartFlow Investigative Site

Lincoln, Nebraska, 68506, United States

Location

MeSH Terms

Conditions

Coronary Artery DiseaseAngina PectorisMyocardial Infarction

Condition Hierarchy (Ancestors)

Coronary DiseaseMyocardial IschemiaHeart DiseasesCardiovascular DiseasesArteriosclerosisArterial Occlusive DiseasesVascular DiseasesChest PainPainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsInfarctionIschemiaPathologic ProcessesNecrosis

Results Point of Contact

Title
Saba Mirza
Organization
HeartFlow

Study Officials

  • Jagat Narula, MD

    HeartFlow Investigative Site

    PRINCIPAL INVESTIGATOR
  • Thomas Stuckey, MD

    HeartFlow Investigative site

    PRINCIPAL INVESTIGATOR
  • Gaku Nakazawa, MD

    HeartFlow investigative site

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
observational
Observational Model
OTHER
Time Perspective
PROSPECTIVE
Target Duration
1 Day
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 24, 2021

First Posted

November 30, 2021

Study Start

October 12, 2021

Primary Completion

November 8, 2022

Study Completion

November 8, 2022

Last Updated

August 22, 2025

Results First Posted

January 29, 2025

Record last verified: 2025-08

Locations