Diagnostic ability of multi-detector spiral computed tomography for pathological lymph node metastasis of advanced gastric cancer

Figure 1 Typical images of four types of enhancement of metastatic lymph nodes. A: Weak enhancement; B: Obvious enhancement; C: Ring enhancement; D: Partial enhancement.

Figure 2 Sample of a lymph node map routinely created in our hospital. The dissected lymph nodes were harvested, separated individually, and the location of the nodes recorded with serial numbers on a map. In the prospective study, sizes of each lymph node were also measured. Red markers on maps are pathologically confirmed metastatic lymph nodes.

Figure 3 Typical images of intranodal morphological metastatic patterns. A: Small nodular type; B: Peripheral type; C: Large nodular type; D: Diffuse type.

Figure 4 A schema for precise one-to-one correspondence of lymph nodes. A: CT examination before surgery. B: Lymph node mapping. All dissected nodes were mapped and measured when the size was > 7 mm. C: Pathological examination. D: One-to-one correspondence between CT images and pathological results by using the size data of the map.

Figure 5 Receiver-operating characteristic curve for diagnosis of nodal metastasis using multi-detector computed tomography created from the data of the retrospective study.

Figure 6 Distribution of lymph node metastasis in four types based on the long axis.