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Table 1 GTVCONV and GTVMAR values for four observers

From: Impact of metal artifact reduction algorithm on gross tumor volume delineation in tonsillar cancer: reducing the interobserver variation

Observer

GTV

Mean ± SD, cm3

Range, cm3

p Value

A

GTVCONV

15.7 ± 8.2

6.0–31.3

0.002

 

GTVMAR

12.9 ± 6.9

3.7–30.4

 

B

GTVCONV

16.1 ± 7.6

4.4–29.5

0.006

 

GTVMAR

13.3 ± 6.5

7.1–26.3

 

C

GTVCONV

11.4 ± 7.0

3.5–29.8

0.013

 

GTVMAR

9.9 ± 5.6

3.3–21.1

 

D

GTVCONV

12.6 ± 6.3

2.7–25.1

0.433

 

GTVMAR

12.3 ± 6.4

4.2–28.9

 

All observers

GTVCONV

14.0 ± 7.4

2.7–31.3

 < 0.001

 

GTVMAR

12.1 ± 6.4

3.3–30.4

 
  1. GTV gross tumor volume, SD standard deviation, GTVCONV gross tumor volume delineated based on conventional CT images, GTVMAR gross tumor volume delineated based on the combination of conventional and metal artifact reduction CT images
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BMC Medical Imaging

ISSN: 1471-2342

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