Article Figures & Data
Figures
- FIGURE 1.
Reconstruction image for ball simulation with balls of various sizes.
- FIGURE 2.
Reconstruction image for line-source phantom in which radial distances were changed. DRC (−) = before DRC; DRC (+) = after DRC.
- FIGURE 3.
Emission CT images before DRC (−) and after DRC (+). Hot-rod phantom, myocardial phantom, and human study are shown from top to bottom. Schemes are shown at left.
- FIGURE 4.
Circumferential profile analysis at dotted line in each scheme. (A) Hot-rod phantom study. (B) Myocardial phantom study (transverse). (C) Myocardial phantom study (short axis). (D) Human study.
Tables
FWHM (cm) Ball True FWHM (cm) Axis Before DRC After DRC A 5.58 x 5.90 5.10 y 5.79 5.01 z 6.11 5.26 B 3.72 x 4.15 3.54 y 4.01 3.43 z 4.24 3.61 C 1.86 x 2.25 1.88 y 2.09 1.75 z 2.35 1.97 D 0.93 x 1.26 1.02 y 1.11 0.89 z 1.37 1.11 E 2.79 x 3.22 2.71 y 3.07 2.59 z 3.38 2.84 F 4.65 x 5.11 4.34 y 4.89 4.24 z 5.18 4.48 Centimeters 145 185 225 265 305 DRC (−) Central 0.86 ± 0.04 0.91 ± 0.05 1.06 ± 0.07 1.24 ± 0.07 1.30 ± 0.08 Radial 1.02 ± 0.03 1.14 ± 0.05 1.23 ± 0.07 1.35 ± 0.10 1.50 ± 0.12 Tangential 1.03 ± 0.03 1.16 ± 0.05 1.21 ± 0.07 1.27 ± 0.12 1.54 ± 0.18 DRC (+) Central 0.44 ± 0.01 0.54 ± 0.01 0.75 ± 0.02 0.80 ± 0.02 0.99 ± 0.02 Radial 0.54 ± 0.01 0.65 ± 0.02 0.82 ± 0.03 0.95 ± 0.02 1.16 ± 0.03 Tangential 0.55 ± 0.01 0.66 ± 0.02 0.81 ± 0.03 1.06 ± 0.06 1.11 ± 0.06
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