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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)