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Table 2 Tumor volume change under diverse operations in relation to the accurately outlined tumor

From: The effects of volume of interest delineation on MRI-based radiomics analysis: evaluation with two disease groups

Dataset

 

Erosion

Smoothing

Dilation

Dilation5

Dilation7

NPC group

CET1-w

0.767 (0.757–0.777)

0.991 (0.989–0.992)

1.350 (1.334–1.366)

1.606 (1.579–1.634)

1.976 (1.932–2.021)

T2-w

0.745 (0.734–0.757)

0.987 (0.985–0.988)

1.388 (1.369–1.407)

1.675 (1.641–1.708)

2.089 (2.035–2.144)

SLN group

DWI

0.664 (0.639–0.674)

0.959 (0.952–0.964)

1.578 (1.531–1.598)

2.080 (1.979–2.107)

2.858 (2.654–2.882)

T2-FS

0.788 (0.773–0.802)

0.985 (0.983–0.987)

1.333 (1.307–1.358)

1.609 (1.560–1.658)

2.019 (1.933–2.105)

  1. Note that the value (mean with 95% confidence interval) in the table represents the ratio of the tumor volume after corresponding operations to the original volume
  2. Erosion erosion operation, Smoothing smoothing operation, Dilation dilation with structural element radius size of 3, Dilation5 dilation with structural element radius size of 5, Dilation7 dilation with structural element radius size of 7