Table 1.

Enumeration of the number and types of imaging modalities and structures of interest for which masks were generated both by eye tracking and by hand annotation. In the case of meningiomas, the masks were subsequently used to train and test a segmentation CNN

Image type	Number of images
Meningiomas on postcontrast T1WI	356
Normal brains on postcontrast T1WI	69
Livers on CT	5
Breast masses on mammography	4
Kidneys on ultrasound	5
Heart on PET MIP	5