Assessment of Coronary Stenoses Using Coronary CT-angiography and Non-invasive Fractional Flow Reserve Measurement.
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ClinicalTrials.gov Identifier: NCT01739075 |
Recruitment Status
:
Completed
First Posted
: November 30, 2012
Last Update Posted
: June 2, 2014
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Condition or disease |
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Myocardial Ischemia |
Coronary Computed Tomography Angiography (cCTA) is a non-invasive imaging modality that provides high-resolution images of coronary lesions. cCTA shows good diagnostic performance in detecting or excluding coronary artery stenoses, but the severity of the lesions is often overestimated. With invasive coronary angiography (ICA) the hemodynamic consequences of obstructive lesions can be estimated using Fractional Flow Reserve measurement (FFR). There is a good correlation between FFR and non-invasive ischemia tests such as stress echocardiography, exercise tolerance test or Single Photon Emission Computed Tomography (SPECT). Measurement of FFR during ICA represents the "gold standard" for assessment of the hemodynamic significance of coronary artery lesions. The major disadvantage of FFR is that it is an invasive measurement, and consequently there is a risk of complications. Recently a non-invasive method to determine FFR has been developed (FFRct). FFRct is performed using standard cCTA images, and is based on computational fluid dynamics. The hemodynamic consequence of stenotic lesions is determined at rest and under simulated condition of hyperemia.
Acute myocardial infarction (MI) is divided into STEMI and NSTEMI on the basis of ECG changes. In Denmark patients with STEMI are treated with primary percutaneous intervention (PPCI) of the culprit lesion. Any non-culprit lesions are typically assessed with FFR after 3-4 weeks.
Even though the rate of complications during ICA with FFR is low, these complications can be severe. Also the procedure is quite resource demanding. Thus it would be desirable if it in these patients could be non-invasively evaluated whether further revascularisation is indicated.
Study Type : | Observational |
Actual Enrollment : | 64 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | Assessment of the Functional Significance of Coronary Stenoses Using Coronary CT-angiography and Non-invasive Fractional Flow Reserve Measurement. |
Study Start Date : | March 2012 |
Actual Primary Completion Date : | March 2014 |
Actual Study Completion Date : | March 2014 |
- FFRct measurement [ Time Frame: Acute measurement ]
- FFR measurement [ Time Frame: Acute assessment ]
- Absolute regional myocardial perfusion [ Time Frame: Acute assessment ]Assessed by cardiac Positron Emission Tomography (PET)

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Ages Eligible for Study: | 18 Years and older (Adult, Senior) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Recent STEMI and indication for new ICA to assess non-culprit lesions
Exclusion Criteria:
- contraindications to adenosine
- allergy to contrast agent
- P-creatinine > 125 micromol/L
- atrial fibrillation
- age < 18 years
- pregnancy

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01739075
Denmark | |
Department of Cardiology, Aarhus University Hospital, Skejby | |
Aarhus N, Denmark, 8200 |
Principal Investigator: | Sara Gaur, MD | Aarhus University Hospital | |
Study Chair: | Bjarne L Nørgaard, MD, Ph.D. | Aarhus University Hospital |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | University of Aarhus |
ClinicalTrials.gov Identifier: | NCT01739075 History of Changes |
Other Study ID Numbers: |
M-5-12 |
First Posted: | November 30, 2012 Key Record Dates |
Last Update Posted: | June 2, 2014 |
Last Verified: | August 2013 |
Additional relevant MeSH terms:
Ischemia Myocardial Ischemia Coronary Artery Disease Coronary Stenosis Pathologic Processes Heart Diseases |
Cardiovascular Diseases Vascular Diseases Coronary Disease Arteriosclerosis Arterial Occlusive Diseases |