Table 2.
Structure delineation and image quality comparison between CTD-T2-weighted imaging and multiple instantaneous switchable scan-T2-weighted imaging by reader 1
| Content | Sequences | Score of 3 | Score of 2 | Score of 1 | Ratio of clearly structure delineation (%) | Z | P |
|---|---|---|---|---|---|---|---|
| Delineation of structure | |||||||
| Zonal anatomy | CTD-T2WI | 52 | 1 | 0 | 98.1 | −0.577 | 0.564 |
| MISS-T2WI | 51 | 2 | 0 | 96.3 | |||
| Prostate capsule | CTD-T2WI | 49 | 4 | 0 | 92.5 | −0.378 | 0.705 |
| MISS-T2WI | 48 | 5 | 0 | 90.6 | |||
| Nerve vascular bundle | CTD-T2WI | 41 | 12 | 0 | 77.4 | −1.500 | 0.134 |
| MISS-T2WI | 48 | 4 | 1 | 90.6 | |||
| Seminal vesicles | CTD-T2WI | 36 | 16 | 1 | 67.9 | −3.770 | 0.000 |
| MISS-T2WI | 52 | 1 | 0 | 98.1 | |||
| Image quality | |||||||
| Sharpness | CTD-T2WI | 53 | 0 | 0 | 100 | −1.000 | 0.317 |
| MISS-T2WI | 52 | 1 | 0 | 98.1 | |||
| Contrast | CTD-T2WI | 53 | 0 | 0 | 100 | 0 | 1.000 |
| MISS-T2WI | 53 | 0 | 0 | 100 | |||
| Deformation | CTD-T2WI | 53 | 0 | 0 | 100 | 0 | 1.000 |
| MISS-T2WI | 53 | 0 | 0 | 100 | |||
| Artifact | CTD-T2WI | 49 | 4 | 0 | 92.5 | −0.816 | 0.414 |
| MISS-T2WI | 51 | 2 | 0 | 96.3 | |||
CTD: conventional 2D T2WI and 2D DWI; MISS: multiple instantaneous switchable scan; T2WI: T2-weighted imaging; DWI: diffusion-weighted imaging