Quantification of left and right ventricular function and myocardial mass: comparison of low-radiation dose 2nd generation dual-source CT and cardiac MRI
Objective To prospectively evaluate the accuracy of left and right ventricular function and myocardial mass measurements based on a dual-step, low radiation dose protocol with prospectively ECG-triggered 2nd generation dual-source CT (DSCT), using cardiac MRI (cMRI) as the reference standard. Materi...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2012
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| In: |
European journal of radiology
Year: 2011, Volume: 81, Issue: 4, Pages: e598-e604 |
| ISSN: | 1872-7727 |
| DOI: | 10.1016/j.ejrad.2011.07.001 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1016/j.ejrad.2011.07.001 Verlag, Volltext: https://www.ejradiology.com/article/S0720-048X(11)00601-2/abstract 
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| Author Notes: | Richard A.P. Takx, Antonio Moscariello, U. Joseph Schoepf, J. Michael Barraza, John W. Nance, Gorka Bastarrika, Marco Das, Mathias Meyer, Joachim E. Wildberger, Stefan O. Schoenberg, Christian Fink, Thomas Henzler |
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| 245 | 1 | 0 | |a Quantification of left and right ventricular function and myocardial mass |b comparison of low-radiation dose 2nd generation dual-source CT and cardiac MRI |c Richard A.P. Takx, Antonio Moscariello, U. Joseph Schoepf, J. Michael Barraza, John W. Nance, Gorka Bastarrika, Marco Das, Mathias Meyer, Joachim E. Wildberger, Stefan O. Schoenberg, Christian Fink, Thomas Henzler |
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| 520 | |a Objective To prospectively evaluate the accuracy of left and right ventricular function and myocardial mass measurements based on a dual-step, low radiation dose protocol with prospectively ECG-triggered 2nd generation dual-source CT (DSCT), using cardiac MRI (cMRI) as the reference standard. Materials and methods Twenty patients underwent 1.5 T cMRI and prospectively ECG-triggered dual-step pulsing cardiac DSCT. This image acquisition mode performs low-radiation (20% tube current) imaging over the majority of the cardiac cycle and applies full radiation only during a single adjustable phase. Full-radiation-phase images were used to assess cardiac morphology, while low-radiation-phase images were used to measure left and right ventricular function and mass. Quantitative CT measurements based on contiguous multiphase short-axis reconstructions from the axial CT data were compared with short-axis SSFP cardiac cine MRI. Contours were manually traced around the ventricular borders for calculation of left and right ventricular end-diastolic volume, end-systolic volume, stroke volume, ejection fraction and myocardial mass for both modalities. Statistical methods included independent t-tests, the Mann-Whitney U test, Pearson correlation statistics, and Bland-Altman analysis. Results All CT measurements of left and right ventricular function and mass correlated well with those from cMRI: for left/right end-diastolic volume r = 0.885/0.801, left/right end-systolic volume r = 0.947/0.879, left/right stroke volume r = 0.620/0.697, left/right ejection fraction r = 0.869/0.751, and left/right myocardial mass r = 0.959/0.702. Mean radiation dose was 6.2 ± 1.8 mSv. Conclusions Prospectively ECG-triggered, dual-step pulsing cardiac DSCT accurately quantifies left and right ventricular function and myocardial mass in comparison with cMRI with substantially lower radiation exposure than reported for traditional retrospective ECG-gating. | ||
| 534 | |c 2011 | ||
| 650 | 4 | |a Cardiac CT | |
| 650 | 4 | |a Cardiac function | |
| 650 | 4 | |a Cardiac MRI | |
| 650 | 4 | |a DSCT | |
| 650 | 4 | |a Myocardial mass | |
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