Skip to main content

Table 2 Results of Quantitative 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

   

SDbackground

SNR

CNR

Cohort

  

Values

t

P

Ratio

t

P

Ratio

t

P

Total

DWI

b1000

5.99 ± 1.59

–

–

–

b800

6.34 ± 2.49

1.144

0.254

b1600

4.53 ± 1.51

−6.54

< 0.001*

ADC Map

SS-EPI

174.68 ± 116.46

−7.174

< 0.001*

iShim

88.3 ± 31.43

Primary

rectal

tumor

DWI

b1000

5.96 ± 1.56

–

22.57 ± 8.66

–

10.81 ± 5.83

–

b800

6.11 ± 2.44

0.436

0.063

41.26 ± 17.02

8.157

< 0.001*

21.53 ± 11.46

6.948

< 0.001*

b1600

4.49 ± 1.54

−5.542

< 0.001*

35.35 ± 14.76

6.208

< 0.001*

22.59 ± 11.95

7.39

< 0.001*

ADC Map

SS-EPI

179.71 ± 134.98

−5.46

< 0.001*

–

–

iShim

91.2 ± 29.51

After treatment

DWI

b1000

6.08 ± 1.71

–

–

–

b800

6.93 ± 2.57

1.432

0.158

b1600

4.64 ± 1.43

−3.399

0.001*

ADC Map

SS-EPI

162.59 ± 49.08

−7.108

< 0.001*

iShim

80.77 ± 35.44

  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
Back to article page

Cancer Imaging

ISSN: 1470-7330

Contact us