Table 2 Criteria used to assess pituitary tumor segmentation quality.
Component | Checkpoint |
|---|---|
Superior boundary | - identify arachnoid boundary separating sella contents |
- assess proximity and delineation of the tumor annotation to the hypophysis, optic chiasm (generally non-enhancing), third ventricle, and gyri rectii | |
Antero-inferior boundary | - assess proximity and delineation of the tumor annotation to the sella turcica (if not eroded), sphenoid sinus and clivus. If available, correlate with fine-cut bony CT |
Posterior boundary | - assess proximity and delineation of the tumor annotation to the clivus and, if eroded, the pre-pontine and interpeduncular cisterns. If available, correlate with fine-cut bony CT |
Lateral boundaries | - inspect for effacement of the cavernous sinus (check the median inter-carotid line in coronal section15) and if laterally displacing, observe for contrast differences between the tumor and cavernous sinus wall to ensure correct annotation |
Contents | - if tumor extends to surrounding dura - including the dural-tumor interface |
- if the pituitary gland is distinct as for most microadenomas, check annotation only covers the tumor, else the complete tumor-gland complex | |
- ensure any tumor cystic components are within the tumor annotation |
