Table 2.

An overview of techniques for ROI segmentation based on MRI.

References	Manual/ semi-automatic/ automatic	Method/tool
Özyurt et al. (54)	Manual	MRIcron software
Tian et al. (26), Zhang et al. (27)	Manual	LIfeX software
Siakallis et al. (44)	Manual	ITK-SNAP 3.8
Tatekawa et al. (53)	Semi-automatic	Analysis of Functional Neuro Images software
Al-Saffar and Yildirim (40)	Automatic	LDI-means clustering algorithm
KV et al. (42)	Automatic	Combined k-means and fuzzy c-means
Gutta et al. (41)	Automatic	A tool from competition