Linear Regression Fitting and Correlation Between BPND Obtained Using Multiple-Window Acquisition and BPND Obtained Using Full Acquisition
Noninvasive kinetic model | Acquisition protocol (min) | Interpolation | Intercept | Slope | R2 |
MRTM2 | 0–30/60–90/120–140 | None | 0.00 | 0.99 | 0.99 |
0–30/120–140 | Average time–activity curve | 0.01 | 1.00 | 0.97 | |
0–30/120–140 | Linear | −0.04 | 0.69 | 0.96 | |
0–20/120–140 | Average time–activity curve | 0.01 | 0.98 | 0.98 | |
0–20/120–140 | Linear | −0.06 | 0.51 | 0.86 | |
SRTM | 0–30/60–90/120–140 | None | 0.00 | 0.92 | 0.99 |
0–30/120–140 | Average time–activity curve | 0.05 | 0.92 | 0.93 | |
0–30/120–140 | Linear | −0.02 | 0.58 | 0.85 | |
0–20/120–140 | Average time–activity curve | 0.07 | 0.87 | 0.87 | |
0–20/120–140 | Linear | −0.03 | 0.37 | 0.56 |
For full acquisition, BPND = slope + intercept ⋅ BPND,0–140 min.