TABLE 1.
Atrial fiber angles by region. The left atrium was divided into five regions, each with two subregions with endocardial and epicardial sides. Fiber angles were approximated as either circumferential (Circ) or longitudinal (Long) from two reference studies, then reconciled to form the atrial material model fibers.
| Region | Subregion | Endo/Epi | Ho 2002 | Zhao 2013 | Model |
|---|---|---|---|---|---|
| Posterior | Superior | Endo | Long | Circ | Long |
| Epi | Long | Long | Long | ||
| Inferior | Endo | Circ | Circ | ||
| Epi | Long | Long | Long | ||
|
| |||||
| Inferior | Posterior | Endo | Long | Long | |
| Epi | Long | Circ | Long | ||
| Annular | Endo | Long | Long | ||
| Epi | Circ | Circ | Circ | ||
|
| |||||
| Septal | Posterior | Endo | Long | Long | |
| Epi | Long | Long | |||
| Annular | Endo | Long | Long | ||
| Epi | Long | Long | |||
|
| |||||
| Superior | Posterior | Endo | Long | Long | Long |
| Epi | Circ | Circ | Circ | ||
| Annular | Endo | Long | Long | Long | |
| Epi | Circ | Circ | Circ | ||
|
| |||||
| Lateral | Posterior | Endo | Circ | Circ | Circ |
| Epi | Circ | Circ | Circ | ||
| Annular | Endo | Circ | Circ | Circ | |
| Epi | Circ | Circ | Circ | ||