Article Figures & Data
Figures
- FIGURE 1.
Registered images with subputamen ROIs. (A) Right striatum registered to AAL template (single axial slice; registered region highlighted). Note that a new transformation will be needed to register the left striatum. (B) Cerebellum and left striatum registered to AAL template (single sagittal slice).
- FIGURE 2.
Average (dashed line) and maximum (solid line) translation (A) and rotation (B) over all 49 datasets against scan time.
- FIGURE 3.
Variations of Kic values obtained from 3-dimensional ROIs (○), ratios obtained from 3-dimensional ROIs (⋄), and Kic values obtained using 2-dimensional manual ROIs (☆).
- FIGURE 4.
Box-and-whisker plot showing range of Kic values (A) and Rs-to-c values (B) for different striatum proportions (using 50% of cerebellum voxels). Boxes indicate lower and upper quartiles and median.
- FIGURE 5.
Correlation (r2) between Rs-to-c values and Kic values: both plots show the same 8 regions of all 49 cases (caudate as crosses, putamen regions as dots), with the best-fit lines relating the static and dynamic values in (A) shown for each region separately (caudate dashed, putamen solid); (B) shows the same data except that the best-fit lines are computed for left and right caudate regions together (dashed) and all 6 putamen regions (left and right) combined (solid).
- FIGURE 6.
Variation in correlation between Patlak and static analysis values with different proportions of voxels from cerebellum and striatum.
Tables
- TABLE 1
Average Percentage Variation in Influx Constant and Ratio Values Across All 8 Values of All 49 Cases with Varying Cerebellum ROI Position
Direction Shift (mm) ±2 ±4 ±6 Kic Rs-to-c Kic Rs-to-c Kic Rs-to-c L-R 0.15 0.13 0.32 0.26 0.52 0.43 A-P 0.29 0.42 0.61 0.79 0.97 1.11 S-I 0.63 0.80 1.53 1.92 3.0 3.43 - TABLE 2
Average Percentage Variation in Influx Constant and Ratio Values Across All 8 Values of All 49 Cases with Varying Striatum ROI Position
Direction Shift (mm) ±2 ±4 Kic Rs-to-c Kic Rs-to-c L-R 4.7 3.0 10.3 6.8 A-P 2.2 2.0 5.6 4.0 S-I 2.1 1.0 4.4 2.5 - TABLE 3
Correlation (r2) Obtained for Each ROI Separately Using 25% of the Brightest Voxels from the Cerebellum and 40% of the Brightest Voxels from Each Striatal Region (All with P < 0.0001)
Region Left Right Caudate 0.83 0.88 Putamen (rostral) 0.95 0.95 Putamen (mid) 0.95 0.96 Putamen (caudal) 0.91 0.92
