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Table 1 Results of Qualitative Image quality comparison between iShim- and SS-EPI-DWI

From: Integrated slice-specific dynamic shimming diffusion weighted imaging (DWI) for rectal Cancer detection and characterization

    Fat suppression Artifacts Imaging quality
Cohort    Scores Z P Scores Z P Scores Z P
Total DWI b1000 3.25 ± 0.51 – 2.87 ± 0.45 – 4.35 ± 0.53 –
b800 3.92 ± 0.27 −9.078 < 0.001* 2.94 ± 0.24 −0.804 0.422 4.82 ± 0.38 −6.439 < 0.001*
b1600 3.94 ± 0.24 −9.402 < 0.001* 2.92 ± 0.27 −0.281 0.779 4.88 ± 0.33 −7.381 < 0.001*
ADC Map SS-EPI – 2.91 ± 0.28 −1.034 0.301 4.3 ± 0.46 −6.946 < 0.001*
iShim 2.95 ± 0.21 4.8 ± 0.4
Primary
rectal tumor 		DWI b1000 3.34 ± 0.51 – 2.89 ± 0.4 – 4.42 ± 0.56 –
b800 3.97 ± 0.16 −7.75 < 0.001* 2.96 ± 0.2 −9.27 0.354 4.9 ± 0.3 −5.796 < 0.001*
b1600 3.97 ± 0.16 −7.75 < 0.001* 2.93 ± 0.25 −0.237 0.812 4.93 ± 0.25 −6.214 < 0.001*
ADC Map SS-EPI – 2.92 ± 0.27 −0.896 0.37 4.34 ± 0.48 −6.49 < 0.001*
iShim 2.96 ± 0.2 4.88 ± 0.33
After treatment DWI b1000 3.04 ± 0.43 – 2.81 ± 0.56 – 4.19 ± 0.4 –
b800 3.79 ± 0.42 −4.994 < 0.001* 2.89 ± 0.31 −0.14 0.889 4.61 ± 0.5 −3.164 0.002*
b1600 3.86 ± 0.36 −5.465 < 0.001* 2.89 ± 0.31 −0.14 0.889 4.75 ± 0.44 −4.156 < 0.001*
ADC Map SS-EPI – 2.89 ± 0.32 −0.507 0.612 4.22 ± 0.42 −2.867 0.004*
iShim 2.93 ± 0.26 4.61 ± 0.5
  1. P with * suggested statistical significance. All the t and P values are the comparison between b = 800 s/mm2 of iShim-DWI and b = 1000 s/mm2 of SS-EPI-DWI, b = 1600 s/mm2 of iShim-DWI and b = 1000 s/mm2 of SS-EPI-DWI for each DWI item
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Cancer Imaging

ISSN: 1470-7330

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