Table 1 Comparison of the site, size, and qualitative measurement of colon masses by dual-energy CT.

From: Accuracy of Combined Computed Tomography Colonography and Dual Energy Iiodine Map Imaging for Detecting Colorectal masses using High-pitch Dual-source CT

 

Adenoma (a)

Adenocarcinoma (b)

Stool (c)

P

Size of masses (cm)

1.51 ± 1.09

4.06 ± 2.82

1.90 ± 0.748

0.81

CT value after enhancement (Hu)

43.85 ± 7.06

52.60 ± 5.93

34.00 ± 1.41

*

Iodine value (mg/ml)

0.75 ± 0.11

1.41 ± 0.17

−0.95 ± 0.44

†

Site

Rectum

3

2

1

—

Colon sigmoideum

6

2

1

—

Descending colon

9

1

0

—

Transverse colon

6

0

0

—

Colon ascendens

6

1

2

—

Size

≤5 mm

11

0

1

—

6–9 mm

17

0

2

—

≥10 mm

2

6

1

—

  1. *CT value after enhancement: comparison between a and c groups, P = 0.14; comparison between a and b groups, P = 0.09. †Iodine value: comparison among a and b,c groups, P < 0.01.
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