Inter-observer variation in two-dimensional and three-dimensional ultrasound measurement of papillary thyroid microcarcinoma

Table 2 The measurements of PTMC by the two observers

	Observer A	Observer B	P value	Mean
Maximum diameter, cm	0.77 ± 0.15	0.78 ± 0.15	0.226	0.78 ± 0.14
2DUS volume, cm³	0.175 ± 0.083	0.175 ± 0.078	0.902	0.175 ± 0.078
3DUS volume, cm³	0.164 ± 0.076	0.162 ± 0.074	0.659	0.163 ± 0.074

Data are presented as mean ± standard deviation
PTMC, papillary thyroid microcarcinoma; 2DUS, two-dimensional ultrasound; 3DUS, three-dimensional ultrasound

ISSN: 1470-7330