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Table 5 DCE-MRI parameters with VS-GR/GRASP stratified according to TRGs and response

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

Parameters TRG1–5 responder and non-responder
VS-GR GRASP VS-GR GRASP
r*(P) r* (P) r* (P) r* (P)
Ktrans max 0.409 (0.001) 0.343 (0.006) 0.443(< 0.001) 0.396 (0.001)
Ktrans mean 0.305 (0.014) 0.320 (0.010) 0.338 (0.006) 0.307 (0.014)
Ktrans 75% 0.318 (0.011) 0.282 (0.024) 0.338 (0.006) 0.279 (0.026)
Kep max 0.379 (0.002) 0.323 (0.009) 0.343 (0.006) 0.381 (0.002)
Kep mean 0.314 (0.012) 0.255 (0.042) 0.215 (0.088) 0.274 (0.029)
Kep 75% 0.283 (0.023) 0.238 (0.058) 0.179 (0.157) 0.223 (0.077)
Ve max 0.097 (0.446) −0.035 (0.784) 0.208 (0.099) −0.003 (0.979)
Ve mean 0.125 (0.324) 0.318 (0.010) 0.256 (0.041) 0.335 (0.007)
Ve 75% 0.151 (0.234) 0.330 (0.008) 0.286 (0.022) 0.307 (0.014)
Vp max 0.312 (0.012) 0.333 (0.007) 0.391 (0.001) 0.412 (0.001)
Vp mean 0.158 (0.213) 0.371 (0.003) 0.228 (0.070) 0.402 (0.001)
Vp 75% 0.115 (0.366) 0.370 (0.003) 0.210 (0.096) 0.407 (0.001)
AUC max 0.524(< 0.001) 0.253 (0.044) 0.471(< 0.001) 0.494(< 0.001)
AUC mean 0.294 (0.018) 0.306 (0.014) 0.343 (0.006) 0.419 (0.001)
AUC 75% 0.314 (0.012) 0.307 (0.014) 0.353 (0.004) 0.432(< 0.001)
  1. Note.—r* is the Spearman correlation coefficient obtained from the nonparametric Spearman correlation test