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NCT07676097Enrolling by invitation

Simultaneous Measurement of EpicArdial and Microvascular ResisTance Via Angiographic FLOW Study

Simultaneous Measurement of EpicArdial and Microvascular ResisTance Via Angiographic FLOW (SMARTFLOW) Study

Source: ClinicalTrials.gov · Last updated 2 Nov 2026

Brief summary (registry, in English)

The aim of this study is to establish the diagnostic performance of the AngioAI+ System (AngioInsight, Inc, USA) for estimating: 1. Fractional flow reserve (FFR) and 2. Detection of coronary microvascular disease (CMD) SMARTFLOW is a prospective, single-arm, observational multicenter study of patients with suspected coronary artery disease (CAD) undergoing clinically indicated invasive coronary angiography with physiological assessment. The study is designed to prospectively enroll patient cohorts and collect data according to their reference procedures (e.g. FFR, CFR measures). A core lab will evaluate performance of the AngioAI+ software retrospectively using the collected SMARTFLOW study data. As such, the investigational AngioAI+ device will not inform clinical decisions amid the study procedure.

Status (registry)
Enrolling by invitation
Study type
Observational
Enrollment
620 (estimated)
First submitted
24 Jun 2026
Start date
28 Jul 2026
Primary completion date
Dec 2027
Lead sponsor
AngioInsight
NCT number
NCT07676097

What you commit to

  • Study type: Observational
  • Planned participants: 620
  • From 28 Jul 2026 to the primary completion date, Dec 2027
  • 14 sites in 2 countries
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Prior myocardial infarction in the target vessel
  • Previous coronary artery bypass grafting surgery (CABG)
  • Previous heart valve surgery
  • Previous heart transplantation
  • Target vessel receiving collaterals

Other illness

  • Moderate-to-severe valvular disease
  • Less than thrombolysis in myocardial infarction (TIMI) 3 flow in the target vessel

Lab values

  • Left ventricular ejection fraction (EF) ≤45%

Other

  • Patients presenting with ST-elevation
  • Stent implantation in the target vessel within the last 12 months
  • Hemodynamic instability or cardiogenic shock
    • Angiographic Exclusion Criteria
  • Left main stenosis≥50%
  • Chronic total occlusion in the target vessel
  • CTO in a non-target vessel
  • Inadequate coronary angiographic images
  • Ostial lesions
  • Severe tortuosity

Who the study is looking for

  • Patients with acute or chronic coronary syndromes referred for invasive coronary angiography with clinically indicated coronary physiologic assessment. In patients with acute coronary syndromes, the physiological evaluation will be restricted to non-culprit vessels.
  • Patients with intermediate CAD (30-90% visual stenosis) with clinically indicated FFR assessment.
  • Patients with NOCAD (\<30% visual stenosis) with clinically indicated microvascular assessment.

Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (14)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Essex Cardiothoracic Centre
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BasildonUnited KingdomUnknown status
St Thomas' Hospital, Guy's and St Thomas' NHS Foundation Trust
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LondonUnited KingdomUnknown status
Royal Brompton Royal Brompton Hospital part of Guy's and St Thomas NHS Foundation Trust
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LondonUnited KingdomUnknown status
Imperial College Healthcare NHS Trust
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LondonUnited KingdomUnknown status
Christ Hospital
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CincinnatiUnited StatesUnknown status
Minneapolis Heart
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MinneapolisUnited StatesUnknown status
Ascension Saint Thomas
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NashvilleUnited StatesUnknown status
Columbia University Medical Center/ NewYork Presbyterian Hospital
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New YorkUnited StatesUnknown status
Northwell Health
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New YorkUnited StatesUnknown status
New York University
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New YorkUnited StatesUnknown status
Stanford University
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Palo AltoUnited StatesUnknown status
Palo Alto Veterans Administration Hospital
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Palo AltoUnited StatesUnknown status
Valley Health System
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ParamusUnited StatesUnknown status
Washington Hospital Center
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Washington D.C.United StatesUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.