MR image analysis: Longitudinal cardiac motion influences left ventricular measurements
| Autor: | Paul M. Parizel, Maarten Hemmink, Christiaan J. Vrints, Bernard P. Paelinck, Patrick Berkovic |
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| Rok vydání: | 2010 |
| Předmět: |
Adult
Male Adolescent Heart Ventricles Movement Image processing Sensitivity and Specificity Young Adult Imaging Three-Dimensional Cardiac motion Image Interpretation Computer-Assisted medicine Humans Offline analysis Radiology Nuclear Medicine and imaging Aged Ejection fraction medicine.diagnostic_test business.industry Orientation (computer vision) Reproducibility of Results Magnetic resonance imaging Body movement General Medicine Middle Aged Image Enhancement Magnetic Resonance Imaging Female Human medicine Mr images Artifacts business Nuclear medicine Algorithms |
| Zdroj: | European journal of radiology |
| ISSN: | 0720-048X |
| DOI: | 10.1016/j.ejrad.2008.10.027 |
| Popis: | Background Software for the analysis of left ventricular (LV) volumes and mass using border detection in short-axis images only, is hampered by through-plane cardiac motion. Therefore we aimed to evaluate software that involves longitudinal cardiac motion. Methods Twenty-three consecutive patients underwent 1.5-Tesla cine magnetic resonance (MR) imaging of the entire heart in the long-axis and short-axis orientation with breath-hold steady-state free precession imaging. Offline analysis was performed using software that uses short-axis images (Medis MASS) and software that includes two-chamber and four-chamber images to involve longitudinal LV expansion and shortening (CAAS-MRV). Intraobserver and interobserver reproducibility was assessed by using BlandAltman analysis. Results Compared with MASS software, CAAS-MRV resulted in significantly smaller end-diastolic (156 ± 48 ml versus 167 ± 52 ml, p = 0.001) and end-systolic LV volumes (79 ± 48 ml versus 94 ± 52 ml, p < 0.001). In addition, CAAS-MRV resulted in higher LV ejection fraction (52 ± 14% versus 46 ± 13%, p < 0.001) and calculated LV mass (154 ± 52 g versus 142 ± 52 g, p = 0.004). Intraobserver and interobserver limits of agreement were similar for both methods. Conclusion MR analysis of LV volumes and mass involving long-axis LV motion is a highly reproducible method, resulting in smaller LV volumes, higher ejection fraction and calculated LV mass. |
| Databáze: | OpenAIRE |
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