Table 1 Clinical scans grading results
Sharpness | Contrast | Uniformity | Overall image quality | Diagnostic confidence | ||
|---|---|---|---|---|---|---|
Analog SPECT | Mean | 3.26 | 3.34 | 3.37 | 3.66 | 3.95 |
Standard deviation | 0.50 | 0.47 | 1.17 | 0.55 | 0.24 | |
Digital SPECT | Mean | 3.79 | 3.92 | 3.18 | 3.74 | 3.79 |
Standard deviation | 0.61 | 0.29 | 1.26 | 0.58 | 0.50 | |
P value (single-tailed paired T test) | 0.0001 | < 1e-5 | 0.1459 | 0.26 | 0.0416 | |