Article Figures & Data
Figures
- FIGURE 1.
Symbia T6 (A) and Infinia Hawkeye 4 (B) images.
- FIGURE 2.
Interpreter-averaged alternative FROC curves for both treatments.
- FIGURE 3.
Symbia T6 lesion detection data expressed as percentage of interpreters who detected the lesion (averaged over cases) with overall average true-positive confidence ratings for each. Lesion identification (ID) on x-axis describes lesion density (HU) and size groupings.
- FIGURE 4.
Infinia Hawkeye 4 lesion detection data expressed as percentage of interpreters who detected the lesion (averaged over cases) with overall average true-positive confidence ratings for each. Lesion identification (ID) on x-axis describes lesion density (HU) and size groupings.
Tables
System kVp Effective mAs Slice configuration Matrix size Scan FOV (mm) Display FOV (mm) Pixel size (mm) Reconstruction kernels Symbia T6 130 13.8 6 × 3 mm 512 × 512 500 282 0.55 B08s, B30s, B60s Hawkeye 4 140 23.7 4 × 5 mm 256 × 256 565 435 1.70 Defined FOV = field of view.
System JAFROC figure-of-merit value SD 95% confidence interval Symbia T6 alone 0.810 0.014 0.781, 0.839 Hawkeye 4 alone 0.599 0.015 0.568, 0.631 Difference 0.211 0.014 0.182, 0.240 Lesion details No. interpreters (S-T6) True-positive rating (S-T6) No. interpreters (IH-4) True-positive rating (IH-4) 12 mm +100 HU 21.667 8.61 21.667 7.477 12 mm −630 HU 21 7.968 16 6.415 12 mm −800 HU 21.333 7.97 3.667 3.637 10 mm +100 HU 21 8.08 21 6.567 10 mm −630 HU 19.75 6.933 7.75 3.43 10 mm −800 HU 18 7.035 8 2.765 8 mm +100 HU 15.5 5.85 8 1.75 8 mm −630 HU 18 6.682 9.6 2.488 8 mm −800 HU 15.333 6.407 1 2.667 5 mm +100 HU 8.333 4.957 3.667 1.15 5 mm −630 HU 9.75 4.2 3.25 1.308 5 mm −800 HU 3.666 1.24 0 0 S-T6 = Symbia T6; IH-4 = Infinia Hawkeye 4.
Total number of interpreters was 22.
