| Title: | Blood Flow Patterns in the Left Ventricle of the Healthy Human Heart Described by Lagrangian Coherent Structures Computed from 4D Phase Contrast MRI |
| Fulltext: |  |
| Authors: | Töger, Johannes and Ulén, Johannes and Carlsson, Marcus and Söderlind, Gustaf and Arheden, Håkan |
| Year: | 2010 |
| Document Type: | Conference Paper |
| Conference: | ISMRM 18th Scientific Meeting and Exhibition 2010 |
| Conference location: | Stockholm, Sweden |
| Status: | Published |
| Refereed: | No |
| BibTeX item: |  |
| Abstract: | Blood flow patterns are a fundamental aspect of cardiac function, and abnormal function may be reflected in the flow patterns. Three-dimensional, time-resolved, three-component phase contrast MRI (4D PC-MRI) can be used to measure the flow, but evaluating flow data is a complex task. Lagrangian Coherent Structures (LCS) is a recently developed visualization method that may offer a simplified view by partitioning the flow into regions of different dynamics. To extract the LCS, a flow map was first computed. The flow map describes the path taken by all particles in the flow from early diastole and forward in time. Since the desired LCS separates blood with different origins, the flow map will have a large spatial variation near the LCS. Surfaces with locally high variation of the flow map were extracted using an in-house developed algorithm. |
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