TABLE 2

Correlation Ratios Between Different PET and CT Frames for Patient 4

	Correlation ratio
		4D PET frames
CT type	Reference PET frame	1	2	3	4	5	6
Warped	0.756	0.989	0.975	0.961	0.944	0.959	0.982
Original	0.721	0.744	0.716	0.768	0.697	0.729	0.745
Single acquired	0.998	0.791	0.489	0.214	0.189	0.345	0.842