Modeling Respiratory Signals by Deformable Image Registration on 4DCT Lung Images

Table 4

The CVar measurement of the registration process from target phases T10 to T90 in registration to the phase T00.

Registration of the target phase to the source phase T00	Slice index range in calculation	CVar measurements	Remark
T10	Index from 30 to 70	1.6117	Confident
T20	Index from 30 to 70	1.9134	Acceptable
T30	Index from 30 to 70	2.0173	Relatively high
T40	Index from 30 to 70	2.1167	Relatively high
T50	Index from 30 to 70	1.9572	Acceptable
T60	Index from 30 to 70	1.9207	Acceptable
T70	Index from 30 to 70	1.9559	Acceptable
T80	Index from 30 to 70	1.8909	Acceptable
T90	Index from 30 to 70	1.2455	Confident