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| Item Type: | Article |
|---|---|
| Title: | Measuring myocardial extracellular volume of the right ventricle in patients with congenital heart disease |
| Creators Name: | Al-Wakeel-Marquard, N., Ferreira da Silva, T., Jeuthe, S., Rastin, S., Muench, F., O H-Ici, D., Yilmaz, S., Berger, F., Kuehne, T. and Messroghli, D.R. |
| Abstract: | The right ventricle's (RV) characteristics - thin walls and trabeculation - make it challenging to evaluate extracellular volume (ECV). We aimed to assess the feasibility of RV ECV measurements in congenital heart disease (CHD), and to introduce a novel ECV analysis tool. Patients (n = 39) and healthy controls (n = 17) underwent cardiovascular magnetic resonance T1 mapping in midventricular short axis (SAX) and transverse orientation (TRANS). Regions of interest (ROIs) were evaluated with regard to image quality and maximum RV wall thickness per ROI in pixels. ECV from plane ROIs was compared with values obtained with a custom-made tool that derives the mean T1 values from a "line of interest" (LOI) centered in the RV wall. In CHD, average image quality was good (no artifacts in the RV, good contrast between blood/myocardium), and RV wall thickness was 1-2 pixels. RV ECV was not quantifiable in 4/39 patients due to insufficient contrast or wall thickness < 1 pixel. RV myocardium tended to be more clearly delineated in SAX than TRANS. ECV from ROIs and corresponding LOIs correlated strongly in both directions (SAX/TRANS: r = 0.97/0.87, p < 0.001, respectively). In conclusion, RV ECV can be assessed if image quality allows sufficient distinction between myocardium and blood, and RV wall thickness per ROI is ≥ 1 pixel. T1 maps in SAX are recommended for RV ECV analysis. LOI application simplifies RV ECV measurements. |
| Keywords: | Congenital Heart Defects, Heart Ventricles, Magnetic Resonance Imaging, Myocardium |
| Source: | Scientific Reports |
| ISSN: | 2045-2322 |
| Publisher: | Nature Publishing Group |
| Volume: | 11 |
| Number: | 1 |
| Page Range: | 2679 |
| Date: | 29 January 2021 |
| Official Publication: | https://doi.org/10.1038/s41598-021-81440-z |
| PubMed: | View item in PubMed |
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