Image Processing Reference
In-Depth Information
9.3.2 Motion and Deformation Analysis..............................................290
9.3.2.1 Motion Analysis ...........................................................290
9.3.2.2 Wall Thickening ...........................................................290
9.3.2.3 Strain Analysis .............................................................291
9.4 Overview of Modeling Techniques .........................................................292
9.4.1 Surface Models ............................................................................293
9.4.1.1 Continuous Models ......................................................293
9.4.1.2 Discrete Models ...........................................................296
9.4.1.3 Implicitly Defined Deformable Models.......................301
9.4.2 Volumetric Models ......................................................................302
9.4.3 Deformation Models....................................................................304
9.4.3.1 General Techniques ......................................................304
9.4.3.2 MR Tagging-Based Techniques ...................................306
9.5 Discussion................................................................................................310
9.5.1 Validation .....................................................................................310
9.5.2 Performance Criteria ...................................................................311
9.5.2.1 Model Complexity or Flexibility .................................311
9.5.2.2 Robustness and Effective Automation .........................313
9.6 Conclusions and Suggestions for Future Research ................................314
Nomenclature ....................................................................................................317
Appendix A .......................................................................................................319
Nontraditional Shape and Motion Descriptors .......................................319
Generic Descriptors .................................................................................319
Mean and Gaussian Curvature ................................................................319
Shape Index and Shape Spectrum...........................................................319
Local Stretching.......................................................................................320
Model-Specific Shape Descriptors ..........................................................321
Geometrical Cardiogram (GCG).............................................................321
Deformable Superquadric and Related Models ......................................321
Global Motion Analysis Based On Departure
from an Affine Model..............................................................................322
Motion Decomposition through Planispheric
Transformation.........................................................................................322
Modal Analysis: Deformation Spectrum ................................................322
Appendix B .......................................................................................................323
MR Tag Localization Techniques ...........................................................323
References .........................................................................................................324
ABSTRACT
Three-dimensional (3-D) imaging of the heart is a rapidly developing area of
research in medical imaging. Advances in hardware and methods for fast spa-
tiotemporal cardiac imaging are extending the frontiers of clinical diagnosis and
research on cardiovascular diseases.
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