Copyright
©The Author(s) 2019.
World J Gastroenterol. Jul 21, 2019; 25(27): 3619-3633
Published online Jul 21, 2019. doi: 10.3748/wjg.v25.i27.3619
Published online Jul 21, 2019. doi: 10.3748/wjg.v25.i27.3619
Table 2 Intraobserver agreement and variability of apparent diffusion coefficient and signal ratio measurements between the two readers over two sessions
Group | CD (n = 21) | Normal (n = 23) | ||||||||||
1st session reader 1 | 2nd session reader 1 | P-value | 1st session reader 2 | 2nd session reader 2 | P-value | 1st session reader 1 | 2nd session reader 1 | P-value | 1st session reader 2 | 2nd session reader 2 | P-value | |
ADC | 1.50 ± 0.40 | 1.54 ± 0.45 | 0.201 | 1.52 ± 0.45 | 1.56 ± 0.47 | 0.125 | 2.55 ± 0.53 | 2.53 ± 0.53 | 0.772 | 2.57 ± 0.50 | 2.64 ± 0.57 | 0.450 |
ICC | 0.952 | 0.977 | 0.736 | 0.711 | ||||||||
CoV | 6.28 | 4.71 | 10.47 | 10.64 | ||||||||
Bias (%) | 1.77 | 1.89 | -1.07 | -1.71 | ||||||||
LoA (%) | -14.10 to 17.65 | -10.65 to 14.42 | -30.75 to 28.62 | -28.30 to 24.86 | ||||||||
SR | 4.17 ± 1.43 | 4.20 ± 1.36 | 0.505 | 4.21 ± 1.34 | 4.23 ± 1.42 | 0.794 | 1.45 ± 0.54 | 1.44 ± 0.53 | 0.697 | 1.44 ± 0.52 | 1.45 ± 0.56 | 0.704 |
ICC | 0.989 | 0.979 | 0.974 | 0.944 | ||||||||
CoV | 3.51 | 4.64 | 5.93 | 8.69 | ||||||||
Bias (%) | 1.39 | -0.07 | -0.58 | 0.45 | ||||||||
LoA (%) | -9.22 to 12.01 | -13.81 to 13.67 | -19.16 to 17.99 | -23.99 to 24.88 |
- Citation: Yu H, Shen YQ, Tan FQ, Zhou ZL, Li Z, Hu DY, Morelli JN. Quantitative diffusion-weighted magnetic resonance enterography in ileal Crohn's disease: A systematic analysis of intra and interobserver reproducibility. World J Gastroenterol 2019; 25(27): 3619-3633
- URL: https://www.wjgnet.com/1007-9327/full/v25/i27/3619.htm
- DOI: https://dx.doi.org/10.3748/wjg.v25.i27.3619