Table 1. . U-net convolutional neural network parameters.

Category	Parameter	Brain	Heart	Nerve
Augmentation	Flip horizontally	Yes	Yes	Yes
	Flip vertically	Yes	Yes	Yes
	Rotation (degrees)	0–171	0–171	0–171
	Scale (%)	90–110	85–115	90–110
Training data	# of slices	12	10	7
Validation data	Size	20% of training data	20% of training data	20% of training data
Training	Input patch size	64	64	64
	Stride to input	0.6	0.6	0.6
	Epochs	1000	2000	100
	Batch size	64	64	64
	Loss function	Categorical cross-entropy	Categorical cross-entropy	Categorical cross-entropy
	Optimization algorithm	Adadelta	Adadelta	Adadelta