Application value of multi-slice spiral computed tomography for imaging determination of metastatic lymph nodes of gastric cancer

Table 1 Comparison of different long diameters of lymph nodes displayed, degrees of lymph node enhancement displayed and ratios of short diameter to long diameter of lymph nodes displayed by multi-slice spiral computed tomography and postoperative pathological results for determination of lymph node metastasis

		Number of lymph nodes detected by MSCT	K value	Sensitivity	Specificity
Diameter of lymph nodes	≥ 5 mm	470	0.464	88.5%	60.1%
	≥ 8 mm	317	0.831	79.6%	78.8%
	≥ 10 mm	128	0.232	48.6%	93.5%
Difference of enhancement of lymph nodes	≥ 40 Hu	495	0.397	89.3%	65.5%
	≥ 80 Hu	379	0.849	81.6%	75.6%
	≥ 100 Hu	197	0.335	53.8%	95.5%
Ratio of short diameter to long diameter of lymph nodes	≥ 0.5	447	0.513	94.3%	57.3%
	≥ 0.7	375	0.873	85.6%	71.8%

MSCT: Multi-slice spiral computed tomography.

Table 2 Comparison of sensitivities and specificities of metastatic lymph nodes in different groups displayed by multi-slice spiral computed tomography

Positions of lymph nodes	Specificity	Sensitivity
Right area of cardiac orifice	79.2%	57.8%
Left area of cardiac orifice	81.3%	73.5%
Lesser curvature	79.6%	90.3%
Greater curvature	87.5%	45.0%
Superior area of pylorus	88.1%	76.7%
Inferior area of pylorus	78.0%	81.9%
Adjacent to left gastric artery, common hepatic artery, and arteria coeliaca	83.2%	89.4%