Table 6.
Average Quality Scores in the Abdomen and Pelvis
| 1.5 T | 3.0 T | |||||
|---|---|---|---|---|---|---|
| tDWI | dDWI | Pa | tDWI | dDWI | Pa | |
| b400 abdomen | ||||||
| Anatomic distortion | 4.5 ± 0.0 | 4.3 ± 0.4 | 0.317 | 3.0 ± 0.0 | 3.3 ± 1.1 | 0.563 |
| Image sharpness | 4.0 ± 0.0 | 4.0 ± 0.0 | 1.000 | 3.0 ± 0.0 | 3.5 ± 0.0 | 0.157 |
| Artifacts | 4.0 ± 0.0 | 4.0 ± 0.0 | 1.000 | 3.0 ± 0.0 | 2.8 ± 0.4 | 0.317 |
| Sum | 12.5 ± 0.0 | 12.3 ± 0.4 | 0.317 | 9.0 ± 0.0 | 9.5 ± 0.7 | 0.414 |
| b800 abdomen | ||||||
| Anatomic distortion | 4.5 ± 0.0 | 4.3 ± 0.4 | 0.317 | 2.8 ± 0.4 | 4.0 ± 0.0 | 0.059 |
| Image sharpness | 4.0 ± 0.0 | 4.0 ± 0.0 | 1.000 | 2.8 ± 1.1 | 3.8 ± 0.4 | 0.102 |
| Artifacts | 4.0 ± 0.0 | 4.0 ± 0.0 | 1.000 | 2.8 ± 0.4 | 3.3 ± 0.4 | 0.157 |
| Sum | 12.5 ± 0.0 | 12.3 ± 0.4 | 0.317 | 8.3 ± 1.8 | 11.0 ± 0.7 | 0.065 |
| ADC abdomen | ||||||
| Overall quality | 5.0 ± 0.0 | 5.0 ± 0.0 | 1.000 | 3.0 ± 0.0 | 3.3 ± 0.4 | 0.317 |
| b1000 pelvis | ||||||
| Anatomic distortion | 2.8 ± 0.4 | 3.0 ± 0.0 | 0.317 | 3.5 ± 0.7 | 3.0 ± 1.4 | 0.157 |
| Image sharpness | 2.0 ± 0.0 | 2.8 ± 0.3 | 0.083 | 3.5 ± 0.0 | 3.0 ± 1.4 | 0.414 |
| Artifacts | 2.5 ± 0.7 | 3.5 ± 0.7 | 0.102 | 3.5 ± 0.7 | 3.8 ± 0.4 | 0.317 |
| Sum | 7.3 ± 1.1 | 9.3 ± 1.1 | 0.063 | 10.5 ± 1.4 | 9.8 ± 3.2 | 0.276 |
| b1600 pelvis | ||||||
| Anatomic distortion | 2.3 ± 0.4 | 3.0 ± 0.0 | 0.083 | 2.5 ± 0.7 | 2.5 ± 0.7 | 1.000 |
| Image sharpness | 2.0 ± 0.0 | 2.8 ± 0.4 | 0.083 | 2.5 ± 0.7 | 2.5 ± 0.7 | 1.000 |
| Artifacts | 2.3 ± 0.4 | 3.8 ± 0.4 | 0.063 | 2.8 ± 0.4 | 2.5 ± 0.7 | 0.563 |
| Sum | 6.5 ± 0.7 | 9.5 ± 0.7 | 0.066 | 7.8 ± 0.4 | 7.5 ± 2.1 | 0.705 |
| ADC pelvis | ||||||
| Overall quality | 3.0 ± 0.0 | 3.5 ± 0.7 | 0.157 | 3.5 ± 0.7 | 3.8 ± 1.1 | 0.317 |
The average quality scores were calculated in the abdomen and pelvis using tDWI and dDWI measurements of 2 volunteers at 1.5 T and 3.0 T.
a
Wilcoxon signed rank test.