Table 4 Image quality analysis between the combined rigid two-channel phased-array endorectal coil and an external phased-array coil (ERC-PAC) and the external PAC datasets for 2 independent observers. Mean and standard deviation for each image quality parameter are shown and significant values are highlighted in bold
Feature | Observer 1 | Observer 2 | |||||
|---|---|---|---|---|---|---|---|
PAC | ERC-PAC | p | PAC | ERC-PAC | p | ||
T2WI | Sharpness/detail | 3.7 ± 0.6 | 4.1 ± 0.9 | 0.03 | 3.7 ± 1.0 | 3.7 ± 0.9 | 0.95 |
Motion | 3.7 ± 0.7 | 4.0 ± 0.8 | 0.07 | 3.4 ± 0.9 | 3.4 ± 0.7 | 0.95 | |
Overall Quality | 3.6 ± 0.7 | 4.0 ± 0.8 | 0.03 | 3.5 ± 0.9 | 3.5 ± 0.8 | 0.89 | |
DWI low b-value (b50) | Sharpness/detail | 3.8 ± 0.4 | 4.0 ± 0.4 | 0.17 | 4.0 ± 0.5 | 3.8 ± 0.6 | 0.34 |
Motion | 3.8 ± 0.4 | 4.0 ± 0.4 | 0.23 | 4.0 ± 0.3 | 3.8 ± 0.7 | 0.27 | |
Distortion | 3.9 ± 0.4 | 4.0 ± 0.4 | 0.30 | 3.9 ± 0.5 | 3.5 ± 0.7 | 0.02 | |
Ghosting/susceptibility | 3.9 ± 0.3 | 4.0 ± 0.4 | 0.45 | 4.3 ± 0.7 | 3.9 ± 0.9 | 0.02 | |
Overall quality | 3.9 ± 0.3 | 4.0 ± 0.4 | 0.13 | 3.9 ± 0.3 | 3.7 ± 0.6 | 0.05 | |
DWI high b-value (b2000) | Sharpness/detail | 3.8 ± 0.4 | 4.1 ± 0.6 | 0.05 | 2.8 ± 0.7 | 3.5 ± 0.7 | <0.001 |
Motion | 3.8 ± 0.4 | 4.1 ± 0.5 | 0.02 | 2.9 ± 0.6 | 3.4 ± 0.7 | 0.02 | |
Distortion | 3.8 ± 0.5 | 4.1 ± 0.5 | 0.01 | 3.2 ± 0.7 | 3.4 ± 0.8 | 0.59 | |
Ghosting/susceptibility | 3.8 ± 0.5 | 4.1 ± 0.5 | 0.01 | 3.5 ± 0.9 | 3.7 ± 0.9 | 0.63 | |
Overall quality | 3.8 ± 0.4 | 4.1 ± 0.5 | 0.02 | 3.0 ± 0.7 | 3.4 ± 0.7 | 0.02 | |
ADC | Sharpness/detail | 3.7 ± 0.5 | 4.1 ± 0.5 | 0.01 | 3.6 ± 0.6 | 3.2 ± 0.6 | 0.01 |
Motion | 3.8 ± 0.4 | 4.1 ± 0.5 | 0.01 | 3.6 ± 0.5 | 3.2 ± 0.7 | 0.02 | |
Distortion | 3.8 ± 0.5 | 4.1 ± 0.4 | 0.001 | 3.7 ± 0.5 | 3.4 ± 0.6 | 0.07 | |
Ghosting/susceptibility | 3.8 ± 0.5 | 4.1 ± 0.4 | 0.01 | 4.0 ± 0.6 | 3.5 ± 0.9 | 0.002 | |
Overall quality | 3.8 ± 0.5 | 4.1 ± 0.4 | 0.002 | 3.6 ± 0.5 | 3.2 ± 0.7 | 0.003 | |