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Table 2 ADC histogram parameters for differentiating different T and N stages of gastric cancers

From: Whole-lesion apparent diffusion coefficient histogram analysis: significance in T and N staging of gastric cancers

  n ADCmean ADCmin ADCmax ADC5% ADC10% ADC25% ADC50% ADC75% ADC90%
T1 12 1804.56 (331.03) 804.00 (541.00) 3291.00 (976.00) 1309.50 (337.25) 1428.00 (405.00) 1586.50 (397.50) 1769.50 (376.50) 1985.50 (375.50) 2297.00 (352.25)
T2 10 1736.87 (334.60) 545.00 (492.00) 3198.50 (328.00) 1086.50 (468.25) 1285.00 (355.50) 1527.00 (286.00) 1735.00 (374.50) 1970.00 (380.00) 2179.50 (363.25)
T3 40 1569.38 (445.54) 451.00 (386.75) 3514.50 (553.75) 1038.00 (315.50) 1123.00 (365.25) 1307.00 (409.25) 1549.50 (467.50) 1775.00 (478.00) 2053.00 (561.75)
T4 18 1486.67 (206.90) 493.00 (239.50) 3505.50 (857.50) 998.00 (221.00) 1061.50 (219.00) 1199.50 (178.25) 1389.00 (176.50) 1657.50 (248.75) 2027.50 (286.75)
P   0.001* 0.069 0.466 0.008* 0.002* <0.001* <0.001* 0.002* 0.010*
N0 18 1856.23 (312.81) 750.00 (396.75) 3195.00 (536.75) 1301.50 (308.25) 1428.50 (290.00) 1620.50 (285.75) 1818.50 (347.75) 2060.50 (354.50) 2261.50 (328.00)
N1 11 1566.30 (483.09) 512.00 (275.00) 3502.00 (762.00) 957.00 (488.00) 1028.00 (554.00) 1257.00 (592.00) 1596.00 (566.00) 1823.00 (488.00) 2066.00 (446.00)
N2 11 1660.12 (346.68) 568.00 (353.00) 3609.00 (815.00) 1018.00 (160.00) 1142.00 (177.00) 1366.00 (174.00) 1605.00 (375.00) 1947.00 (470.00) 2141.00 (542.00)
N3 31 1552.96 (326.16) 382.00 (425.00) 3463.00 (449.00) 1026.00 (308.00) 1117.00 (328.00) 1271.00 (313.00) 1494.00 (321.00) 1759.00 (378.00) 2074.00 (430.00)
Nx 9 1489.73 (216.96) 391.00 (336.50) 3548.00 (932.00) 991.00 (233.00) 1054.00 (223.50) 1179.00 (189.50) 1379.00 (219.50) 1652.00 (227.00) 2017.00 (246.00)
P†   0.007* 0.005* 0.277 0.006* 0.004* 0.004* 0.005* 0.013* 0.023*
  1. ADC apparent diffusion coefficient; Nx: 9 patients were categorized as Nx because they underwent palliative surgeries which could not completely meet the requirements for N staging
  2. The values of the ADC parameters were presented as median (interquartile range)
  3. *: P < 0.05 (independent-samples Kruskal-Wallis test)
  4. †: The independent-samples Kruskal-Wallis test for N staging didn’t include those 9 patients who were categorized as Nx