Pituitary

0.280 Avg Dice

— Median Dice

— Avg HD95 (mm)

— Avg MDC (mm)

Delineation Information

Modality: MR
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 pituitary gland cannot be easily identified on axial CT, although the bony margins of the fossa are well shown. It is oval-shaped (craniocaudally up to 12 mm) and lies in the sella turcica. Laterally, the pituitary gland is bordered by the cavernous sinuses, which are well visible with intravenous contrast agent, it is just inferior to the brain, and is connected to the hypothalamus by its pituitary stalk. The borders of the pituitary gland can be
defined best in the sagittal view. Alternatively, the inner part of the sella turcica can be used as a surrogate anatomical bony structure best identified using bone 1500/950 or soft tissue 350/50 WL/WW on CT.