Name
Title | ||
|---|---|---|
Which reorientation framework for the atlas-based comparison of motion from cardiac image sequences? |
Abstract | ||
|---|---|---|
The present paper builds upon recent advances in the spatiotemporal alignment of cardiac sequences to construct a statistical atlas of normal motion. Comparing cardiac sequences requires considering both the temporal component (changes along the sequences) and the inter-subject one. The objective here is to understand the changes in the comparison of myocardial velocities depending on (1) the chosen reorientation action (finite strain [local rotation only], local rotation and isotropic scaling, or full Jacobian matrix using the push-forward) and (2) the chosen system of coordinates (Lagrangian, Eulerian, or if a compromise between both [e.g. hybrid-Eulerian] is possible). Myocardial velocities are estimated locally using speckle tracking on echocardiographic (US) sequences, then aligned to a reference timescale, and finally reoriented to the anatomical reference according to the chosen reorientation framework. The methodology was applied to 2D US sequences in a 4-chamber view from 71 healthy volunteers. Experiments highlight the limitations of the hybrid-Eulerian scheme, showing that the intra-subject transformation should be taken into account, and discuss the options to perform the inter-subject one. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1007/978-3-642-33555-6_3 | STIA |
Keywords | Field | DocType |
reorientation action,cardiac sequence,reorientation framework,chosen system,local rotation,us sequence,reference timescale,anatomical reference,atlas-based comparison,myocardial velocity,cardiac image sequence,hybrid-eulerian scheme | Parallel transport,Speckle pattern,Lagrangian,Jacobian matrix and determinant,Mathematical analysis,Eulerian path,Finite strain theory,Atlas (anatomy),Geometry,Scaling,Mathematics | Conference |
Citations | PageRank | References |
4 | 0.42 | 14 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| N Duchateau | 1 | 199 | 20.53 |
| M De Craene | 2 | 411 | 41.85 |
| Xavier Pennec | 3 | 5021 | 357.08 |
| Beatriz Merino | 4 | 4 | 0.42 |
| Marta Sitges | 5 | 132 | 12.62 |
| Bart H. Bijnens | 6 | 164 | 27.56 |