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Table 3 Differences among TRG1–5 for DCE-MRI parameters with VS-GR and GRASP reconstruction

From: The value of GRASP on DCE-MRI for assessing response to neoadjuvant chemotherapy in patients with esophageal cancer

parameters VS-GR reconstruction GRASP reconstruction
TRG1 TRG2 TRG3 TRG4 TRG5 χ2 P value TRG1 TRG2 TRG3 TRG4 TRG5 χ2 P value
Ktrans max 0.000 (0.000,0.099) 1.075 (0.630,1.643) 0.713 (0.553,1.405) 2.477 (1.800,5.000) 2.396 (1.357,3.420) 20.101 <0.001 0.000 (0.000,0.086) 0.159 (0.100,0.304) 0.170 (0.117,0.207) 0.324 (0.198,0.905) 0.310 (0.200,0.424) 15.533 0.004
Ktrans mean 0.000 (0.000,0.037) 0.277 (0.105,0.343) 0.189 (0.094,0.369) 0.239 (0.200,0.549) 0.315 (0.166,0.405) 12.368 0.015 0.000 (0.000,0.027) 0.055 (0.030,0.106) 0.044 (0.025,0.068) 0.060 (0.045,0.126) 0.074 (0.051,0.095) 13.432 0.009
Ktrans 75% 0.000 (0.000,0.052) 0.359 (0.123,0.467) 0.307 (0.123,0.491) 0.372 (0.271,0.572) 0.422 (0.200,0.562) 12.313 0.015 0.000 (0.000,0.034) 0.082 (0.043,0.129) 0.056 (0.033,0.082) 0.074 (0.060,0.160) 0.091 (0.065,0.122) 12.531 0.014
Kep max 0.000 (0.000,0.200) 3.131 (2.127,5.898) 2.208 (1.657,3.024) 4.506 (2.729,7.424) 4.868 (2.823,6.578) 16.684 0.002 0.000 (0.000,0.489) 0.810 (0.543,1.410) 0.929 (0.580,1.121) 1.543 (1.010,1.985) 1.390 (0.854,1.877) 14.455 0.006
Kep mean 0.000 (0.000,0.002) 0.723 (0.388,0.824) 0.215 (0.113,0.493) 0.349 (0.252,1.185) 0.537 (0.361,0.844) 15.088 0.005 0.000 (0.000,0.123) 0.294 (0.167,0.558) 0.212 (0.167,0.455) 0.272 (0.213,0.434) 0.331 (0.227,0.432) 10.358 0.035
Kep 75% 0.000 (0.000,0.005) 1082 (0.833,1.568) 0.361 (0.010,0.799) 0.539 (0.327,1.571) 0.897 (0.545,1.361) 15.254 0.004 0.000 (0.000,0.160) 0.472 (0.262,0.664) 0.277 (0.228,0.532) 0.358 (0.274,0.552) 0.451 (0.282,0.540) 11.033 0.026
Ve max 1.000 (0.510,1.000) 1.000 (1.000,1.000) 1.000 (1.000,1.000) 1.000 (1.000,1.000) 1.000 (1.000,1.000) 7.180 0.127 1.000 (1.000,1.000) 0.824 (0.376,1.000) 1.000 (0.417,1.000) 1.000 (1.000,1.000) 1.000 (0.826,1.000) 3.447 0.486
Ve mean 0.000 (0.000,0.002) O.349 (0.111,0.438) 0.369 (0.139,0.434) 0.331 (0.256,0.386) 0.317 (0.203,0.359) 11.552 0.021 0.000 (0.000,0.200) 0.196 (0.150,0.207) 0.189 (0.159,0.275) 0.230 (0.199,0.303) 0.230 (0.199,0.287) 9.809 0.044
Ve 75% 0.000 (0.000,0.0007) 0.387 (0.064,0.555) 0.505 (0.001,0.604) 0.503 (0.373,0.570) 0.468 (0.303,0.508) 11.478 0.022 0.000 (0.000,0.214) 0.220 (0.175,0.250) 0.219 (0.180,0.305) 0.257 (0.163,0.311) 0.256 (0.219,0.328) 8.518 0.074
Vp max 0.000 (0.000,0.007) 0.067 (0.033,0.115) 0.058 (0.041,0.101) 0.244 (0.056,0.630) 0.143 (0.073,0.249) 14.198 0.007 0.000 (0.000,0.034) 0.066 (0.050,0.104) 0.082 (0.045,0.137) 0.205 (0.103,0.335) 0.134 (0.090,0.236) 16.581 0.002
Vp mean 0.000 (0.000,0.0001) 0.004 (0.001,0.007) 0.001 (0.001,0.007) 0.003 (0.000,0.009) 0.002 (0.000,0.005) 9.772 0.044 0.000 (0.000,0.001) 0.009 (0.003,0.015) 0.003 (0.001,0.027) 0.019 (0.006,0.063) 0.014 (0.009,0.016) 17.041 0.002
Vp 75% 0.000 (0.000,0.0007) 0.001 (0.001,0.004) 0.001 (0.001,0.006) 0.001 (0.001,0.001) 0.001 (0.001,0.001) 9.602 0.048 0.000 (0.000,0008) 0.011 (0.003,0.022) 0.001 (0.001,0.041) 0.033 (0.007,0.080) 0.023 (0.014,0.038) 17.523 0.002
AUC max 0.000 (0.000,0.316) 0.071 (0.059,0.089) 0.083 (0.070,0.089) 0.101 (0.090,0.119) 0.121 (0.089,0.147) 21.365 <0.001 0.000 (0.000,1.619) 1.738 (0.974,2.350) 3.344 (2.259,6.248) 4.561 (2.326,6.424) 3.364 (2.516,4.512) 16.454 0.002
AUC mean 0.000 (0.000,0.012) 0.036 (0.018,0.045) 0.043 (0.026,0.045) 0.369 (0.032,0.041) 0.040 (0.029,0.047) 11.445 0.022 0.000 (0.000,0.793) 0.940 (0.562,1.469) 1.473 (1.036,1.617) 1.688 (1.035,2.375) 1.538 (1.190,1.875) 12.605 0.013
AUC 75% 0.000 (0.000,0.015) 0.045, (0.025,0.056) 0.052 (0.034,0.054) 0.047 (0.041,0.056) 0.053 (0.038,0.061) 11.980 0.018 0.000 (0.000,0.965) 1.180 (0.734,1.661) 1.642 (1.232,1.981) 2.041 (1.234,2.748) 1.854 (1.417,2.149) 12.994 0.011
  1. Note. —Data are median (P25, P75)