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| Content Provider | IET Digital Library |
|---|---|
| Author | Rewaidy, Hossam El Ibrahim, El Sayed Fahmy, Ahmed S |
| Abstract | Active shape models (ASM) showed to have potential for segmenting the right ventricle (RV) in cardiac magnetic resonance images (MRIs). Nevertheless, the large variability and complexity of the RV shape do not allow for concisely capturing all possible shape variations among patients and anatomical cross-sections. Noticeably, the latter increases the number of iterations required to converge to a proper solution and reduces the segmentation accuracy. In this study, the authors propose a new ASM framework that can model the RV shape in short-axis cardiac MRI images. In this framework, the RV contour is split into two simpler segments, septal (SP) and free wall, whose shape variations are independently modelled using two separate (dual) ASM models. The contour splitting is done at the location of the RV insertion points into the SP wall. Further, instead of using the conventional Procrustes method, the RV contours are aligned using the Bookstein coordinate transformation, which uses the RV insertion points as landmarks to linearly align the RV contours. The results from a dataset of 14 patients show that the proposed framework outperforms the conventional ASM framework and can model complex RV shape variation with more accuracy and in less iteration steps. |
| Starting Page | 717 |
| Ending Page | 723 |
| Page Count | 7 |
| ISSN | 17519659 |
| Volume Number | 10 |
| e-ISSN | 17519667 |
| Issue Number | Issue 10, Oct (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-ipr/10/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2016.0073 |
| Journal | IET Image Processing |
| Publisher Date | 2016-05-04 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | ASM Framework Biology And Medical Computing Biomedical Magnetic Resonance Imaging Biomedical MRI Bookstein Coordinate Transformation Cardiac Magnetic Resonance Image Computer Vision And Image Processing Technique Dual Active Shape Model Image Segmentation Medical Image Processing Medical Magnetic Resonance Imaging And Spectroscopy Optical, Image And Video Signal Processing Patient Diagnostic Method And Instrumentation Procrustes Method Right Ventricle Segmentation RV Shape Complexity RV Shape Variability Short-axis Cardiac MRI Image Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software |
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