. 2021 Jan 26;23(4):604–613. doi: 10.1007/s11307-021-01581-5

Table 2.

Shortened time intervals interpolated using four different methods are compared with plasma input DVR-1 and SRTM BP_ND obtained with the original scan duration

		DVR-1 (0–60/80–130)				SRTM BP_ND (0–60/80–130)
		HC		AD		HC		AD
		r²	Slope	r²	Slope	r²	Slope	r²	Slope
POP-IP 2T4k_V_B	SRTM BP_ND (0–50/80–100)	0.96	0.96	0.91	1.01	0.98	1.04	0.99	0.93
	SRTM BP_ND (0–40/80–100)	0.95	0.96	0.91	0.99	0.98	1.03	0.99	0.91
	SRTM BP_ND (0–30/80–100)	0.93	0.94	0.92	0.97	0.96	1.02	0.98	0.89
Cubic	SRTM BP_ND (0–50/80–100)	0.96	0.94	0.91	1.01	0.99	1.02	0.99	0.93
	SRTM BP_ND (0–40/80–100)	0.96	0.95	0.91	0.98	0.99	1.02	0.99	0.90
	SRTM BP_ND (0–30/80–100)	0.94	0.91	0.91	0.92	0.97	0.98	0.98	0.85
Linear	SRTM BP_ND (0–50/80–100)	0.96	0.93	0.91	0.98	0.99	1.02	0.99	0.90
	SRTM BP_ND (0–40/80–100)	0.96	0.95	0.91	0.92	0.98	1.03	0.99	0.84
	SRTM BP_ND (0–30/80–100)	0.94	0.91	0.91	0.84	0.96	0.98	0.98	0.76
Exponential	SRTM BP_ND (0–50/80–100)	0.96	0.94	0.91	1.01	0.99	1.02	0.99	0.93
	SRTM BP_ND (0–40/80–100)	0.96	0.96	0.90	0.97	0.98	1.04	0.98	0.90
	SRTM BP_ND (0–30/80–100)	0.94	0.92	0.90	0.92	0.96	0.99	0.97	0.85

The correspondence of SRTM BP_ND with DVR-1 for the original scan duration was r² = 0.96, slope = 0.90 for HC, and r² = 0.93, slope = 1.09 for AD subjects