Glnd_Lacrimal_L
Model: Brain_Cornea
Model Information
Metrics
Average Volume (cc)
Dice Coefficient
95th Percentile Hausdorff Distance (mm)
Median Distance to Conformity (mm)
Undercontouring MDC (mm)
Overcontouring MDC (mm)
Delineation Information
Guidelines
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 lacrimal gland is an almond shaped gland (18 mm craniocaudally, 15 mm axial length and 5 mm axial width) located in the orbit superior-lateral to the eye, superior to the lateral rectus muscle and lateral to the superior rectus muscle. It can be delineated on CT using soft brain 120/40 or soft tissue 350/50 WW/WL settings.
Structure Boundaries
Cranial Boundary
Superior most slice where the lacrimal gland is visible
Caudal Boundary
Inferior most slice where the lacrimal gland is visible. Superior to the lateral rectus muscle.
Medial Boundary
Superior rectus muscle
Lateral Boundary
Orbital bone
Ventral Boundary
Outer contour of the lacrimal gland