Structure Detail
Lens_L
Lateralized Structure LEFT
0.510
Avg Dice
0.550
Median Dice
2.70
Avg HD95 (mm)
2.14
Avg MDC (mm)
Delineation Information
- Modality
- CT
- Guideline
- Taken from Eekers DBP, Di Perri D, Roelofs E, Postma A, Dijkstra J, Ajithkumar T, et al. Update of the EPTN atlas for CT- and MR-based contouring in Neuro-Oncology. Radiother Oncol 2021;160:259–65. https://doi.org/10.1016/j.radonc.2021.05.013.
- Method
- Manual. The lens (diameter up to 10 mm) is a clearly visible biconvex avascular structure, located between the vitreous humor and the iris and can easily be delineated on CT
Anatomical Boundaries
- Cranial
- Where the lens is visible first.
- Caudal
- Inferior extent of the lens
- Medial
- Outer contour of the lens
- Lateral
- Outer contour of lens
- Ventral
- Outer contour of lens
- Dorsal
- Outer contour of lens
Additional Metrics
| Average MSD | — |
| Median MSD | — |
| Median HD95 | 2.29 |
| Median MDC | 1.90 |
| Avg Undercontouring MDC | 0.44 |
| Avg Overcontouring MDC | 1.70 |
| Average Volume | 0.12 |