Double contrast-enhanced ultrasonography improves diagnostic accuracy of T staging compared with multi-detector computed tomography in gastric cancer patients

Table 4 Diagnostic accuracy of double contrast-enhanced ultrasonography and multi-detector computed tomography for gastric cancer T staging based on clinicopathological features, n (%)

Features	Total	Accuracy of DCEUS (%)	Accuracy of MDCT (%)	P value
Location
Upper	17	14 (82.4)	9 (52.9)	0.067
Middle	70	58 (82.9)	40 (57.1)	0.001
Lower	122	110 (90.2)	80 (65.6)	< 0.001
Entire	20	17 (85.0)	11 (55.0)	0.038
Tumor size
< 2.0 cm	78	67 (85.9)	48 (61.5)	< 0.001
≥ 2.0 cm	151	139 (92.1)	97 (64.2)	< 0.001
Ulceration
Yes	198	168 (84.8)	117 (59.1)	< 0.001
No	31	31 (100)	23 (74.2)	0.0051
Borrmann classification
I	7	7 (100)	5 (71.4)	0.4621
II	56	46 (82.1)	27 (48.2)	< 0.001
III	70	58 (82.9)	43 (61.4)	< 0.001
IV	16	14 (87.5)	9 (56.3)	0.1131
Histopathological type
Well differentiation	11	11 (100)	10 (90.9)	0.3061
Moderately differentiation	45	39 (86.7)	20 (44.4)	< 0.001
Poorly differentiation	173	149 (86.1)	110 (63.6)	< 0.001

¹Fisher exact test.

GC: Gastric cancer; DCEUS: Double contrast-enhanced ultrasonography; MDCT: Multi-detector computed tomography.