Table 5.
Structure delineation and image quality comparison between CTD-diffusion-weighted imaging and multiple instantaneous switchable scan-diffusion-weighted imaging by reader 2
| Content | Sequences | Score of 3 | Score of 2 | Score of 1 | Ratio of clearly structure delineation (%) | Z | P |
|---|---|---|---|---|---|---|---|
| Delineation of structure | |||||||
| Zonal anatomy | CTD-DWI | 49 | 4 | 0 | 92.5 | −1.000 | 0.317 |
| MISS-DWI | 50 | 3 | 0 | 94.3 | |||
| Prostate capsule | CTD-DWI | 48 | 5 | 0 | 90.6 | −1.000 | 0.317 |
| MISS-DWI | 50 | 3 | 0 | 94.3 | |||
| Nerve vascular bundle | CTD-DWI | 43 | 10 | 0 | 84.9 | −1.000 | 0.317 |
| MISS-DWI | 43 | 9 | 1 | 81.1 | |||
| Seminal vesicles | CTD-DWI | 43 | 10 | 0 | 84.9 | −1.000 | 0.317 |
| MISS-DWI | 43 | 9 | 1 | 81.1 | |||
| Image quality | |||||||
| Sharpness | CTD-DWI | 47 | 6 | 0 | 88.7 | 0 | 1.000 |
| MISS-DWI | 47 | 6 | 0 | 88.7 | |||
| Contrast | CTD-DWI | 44 | 9 | 0 | 83.0 | 0 | 1.000 |
| MISS-DWI | 44 | 9 | 0 | 83.0 | |||
| Deformation | CTD-DWI | 47 | 6 | 0 | 88.7 | −0.333 | 0.739 |
| MISS-DWI | 45 | 7 | 1 | 84.9 | |||
| Artifact | CTD-DWI | 41 | 12 | 0 | 77.4 | −1.000 | 0.317 |
| MISS-DWI | 40 | 13 | 0 | 75.5 | |||
CTD: conventional 2D T2WI and 2D DWI; MISS: multiple instantaneous switchable scan; T2WI: T2-weighted imaging; DWI: diffusion-weighted imaging