. 2015 May 1;5(4):193–202. doi: 10.1089/brain.2014.0313

Table 4.

Comparison of the Approaches Taken in Studies of Graph Metrics' Reliability in Structural Networks

Study	Acquisition	Number of diffusion gradient directions	Parcellation scheme	Registration	Diffusion modeling	Fiber tracking algorithm	Edge weight definition
Andreotti	DTI	42	FreeSurfer	FSL	FSL	FSL	^f
Bassett	DTI, DSI	30	AAL, HOA, LPBA40, upsampling	FSL	TrackVis	TrackVis	^{b, a}
Buchanan	DTI	64	FreeSurfer	FSL	FSL	FSL, FACT	^{b, c, e}
Cheng	DTI	48	FreeSurfer	FSL	TrackVis	TrackVis	^{c, g}
Dennis	DTI	94	FreeSurfer	FSL	FSL	FSL	^d
Duda	DTI	34	DKT31	ANTs	CAMINO	FACT, Euler, RK4, TEND	^a
Owen	DTI	30	FreeSurfer	FSL	FSL	FSL	^d
Parker	DTI	60	FreeSurfer, NiftySeg	FSL, NiftyReg	FSL, MRTrix	FSL, MRTrix	^a
	DTI
Vaessen	DTI	32, 15, 6	WFUpick	CATNAP	CAMINO	CAMINO	^a

^{^a}

The edge weight is given by the number of connecting streamlines between two ROIs.

^{^b}

The edge weight is given by the sum of the connecting streamlines divided by the mean of the two ROIs' volumes.

^{^c}

As (a), but correcting for streamline length.

^{^d}

The number of fibers connecting the two ROIs normalized to the volume of the selected ROI.

^{^e}

The mean FA value along interconnecting streamlines.

^{^f}

As (c), divided by the sum number of streamlines started from the ROIs, multiplied by the sum size of the two ROIs.

^{^g}

Twice the sum of the connecting streamlines between the two ROIs, divided by the sum volume of the 2 ROIs.

AAL, Automated Anatomical Labeling; ANTs, Advanced Normalization Tools; CATNAP, Coregistration Adjustment and Tensor Solving, A Nicely Automated Program; DKT31, Desikan–Killiany–Tourville; FACT, Fiber Assignment by Continuous Tracking; FSL, FMRIB Software Library; HOA, Harvard–Oxford Atlas; LPBA40, LONI Probabilistic Brain Atlas; RK4, Fourth-order Runge-Kutta; TEND, Tensor Deflection; WFUpick, Wake Forest University Pick.