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Table 2 Quantitative Dual-Energy Computed Tomography Parameters to Discriminate Between Benign and Metastatic Lymph Nodes

From: Dual-energy computed tomography in a multiparametric regression model for diagnosing lymph node metastases in pancreatic ductal adenocarcinoma

Parameter

Benign Lymph Nodes (n=100)

Metastatic Lymph Nodes (n=99)

T

P-value

Short diameter

0.4334±0.11567

0.6247±0.19808

-8.311

0.000

SD-40 keV

64.292±13.9639

88.880±20.6417

-9.836

0.000

SD-70 keV

28.321±6.1689

36.707±7.7729

-8.434

0.000

Venous phase IC

2.814±0.7105

4.583±0.7779

-16.751

0.000

Venous phase NIC (%)

39.258±10.6296

65.027±14.4810

-14.320

0.000

Venous phase Rho

26.272±10.9276

32.287±9.5861

-4.126

0.000

Venous phase Z

8.9275±0.30117

9.5190±0.27827

-14.312

0.000

Venous phase DEI

0.02072±0.005614

0.03428±0.006078

-16.298

0.000

Venous phase λHU

5.4585±1.28651

7.35818±1.31711

-10.554

0.000

  1. DEI dual energy index IC iodine concentration NIC normalized iodine concentration, Z effective atomic number
  2. *Quantitative variables are presented as mean ± standard deviation