Abstract
Objectives
Compared with X-ray coronary angiography (CAG), magnetic resonance imaging of the coronary vessel wall (MR-CVW) may provide more information about plaque burden and coronary remodelling. We compared MR-CVW with intravascular ultrasound (IVUS), the standard of reference for coronary vessel wall imaging, with regard to plaque detection and wall thickness measurements.
Methods
In this study 17 patients with chest pain, who had been referred for CAG, were included. Patients underwent IVUS and MR-CVW imaging of the right coronary artery (RCA). Subsequently, the coronary vessel wall was analysed for the presence and location of coronary plaques.
Results
Fifty-two matching RCA regions of interest were available for comparison. There was good agreement between IVUS and MR-CVW for qualitative assessment of presence of disease, with a sensitivity of 94% and specificity of 76%. Wall thickness measurements demonstrated a significant difference between mean wall thickness on IVUS and MR-CVW (0.48 vs 1.24 mm, P < 0.001), but great heterogeneity between wall thickness measurements, resulting in a low correlation between IVUS and MR-CVW.
Conclusions
MR-CVW has high sensitivity for the detection of coronary vessel wall thickening in the RCA compared with IVUS. However, the use of MRI for accurate absolute wall thickness measurements is not supported when a longitudinal acquisition orientation is used.
Key Points
• Both MRI and IVUS can assess coronary vessels
• Both MRI and IVUS can identify coronary vessel wall thickening.
• MRI provides more information about the coronary plaque burden than conventional angiography.
• However, MRI overestimates absolute coronary wall thickness when compared with IVUS.
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Abbreviations
- AUC:
-
Area under the curve
- BSSFP:
-
Balanced steady state free precession
- CAD:
-
Coronary artery disease
- CAG:
-
X-ray coronary angiography
- CMRA:
-
Coronary MR angiography
- CT:
-
Computed tomography
- DIR:
-
Double inversion recovery
- FFR:
-
Fractional flow reserve
- FWHM:
-
Full width at half maximum
- IVUS:
-
Intravascular ultrasound
- MESA:
-
Multi-Ethnic Study of Atherosclerosis
- MRI:
-
Magnetic resonance imaging
- MR-CVW:
-
Magnetic resonance coronary vessel wall imaging
- NPV:
-
Negative predictive value
- PCI:
-
Percutaneous coronary intervention
- PPV:
-
Positive predictive value
- PROCAM:
-
Prospective Cardiovascular Münster Heart Study
- RCA:
-
Right coronary artery
- ROC:
-
Receiver operating characteristic curve
- ROI:
-
Region of interest
- SPIR:
-
Spectral presaturation with inversion recovery
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Acknowledgements
The authors would like to thank Boston Scientific Benelux B.V. for their training in and assistance with acquiring the IVUS-images. Furthermore, we would like to thank all interventional cardiologists working in the Maastricht University Medical Centre, for their assistance with IVUS procedures.
This study was supported by BayerSchering Pharma. The sponsor had no influence on study design, data collection or analysis of the data.
Trial registration:www.clinicaltrials.gov ID: NCT00984776
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Gerretsen, S., Kessels, A.G., Nelemans, P.J. et al. Detection of coronary plaques using MR coronary vessel wall imaging: validation of findings with intravascular ultrasound. Eur Radiol 23, 115–124 (2013). https://doi.org/10.1007/s00330-012-2576-1
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DOI: https://doi.org/10.1007/s00330-012-2576-1