Abstract
Objectives
To evaluate the agreements of unidimensional, bidimensional, area and volume measurements
of pulmonary tumors on multidetector computed tomography (MDCT), and to determine
which method is the most reliable one.
Materials and methods
Thirty patients with pulmonary tumors were enrolled in this study, which referred
to undergo thoracic MDCT in our hospital. Four radiologists evaluated dimensions of
pulmonary tumor independently, including length, width, height, area and volume. The
intraclass correlation coefficient (ICC) and concordance correlation coefficient (CCC)
were both used to evaluate the variability between the repeat readings of the same
scan.
Results
The ICCs and CCCs of the intraobserver were both higher than interobserver's (ICC
intra vs. inter: 0.984 vs. 0.947 and CCC intra vs. inter: 0.993 vs. 0.943). Area of
intraobserver ICC (ICC=0.992, P<.001) and CCC (CCC=0.997, P<.001) both had the best agreements of the six methods. Among the interobserver ICCs
and CCCs, area (ICC=0.981, P<.001 and CCC=0.982, P<.001) was also the best of the six methods.
Conclusions
Area measurement on MDCT is the most reproducible method that measures tumor dimension
accurately.
Keywords
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Article info
Publication history
Published online: September 03, 2013
Accepted:
June 25,
2013
Received in revised form:
May 20,
2013
Received:
January 3,
2013
Footnotes
☆The work described in this paper was supported by a grant from the National Natural Science Foundation of China (Project No. 81171307 - wl).
Identification
Copyright
© 2013 Published by Elsevier Inc.
