能谱CT扫描CT值、IC值在胃腺癌淋巴结定性评估中的临床应用

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Abstract Objective To explore the application value of CT value and iodine concentration (IC) value in the arterial and venous phase in the spectral CT scan in the qualitative assessment of the lymph nodes in gastric adenocarcinoma. Methods A total of 85 patients with gastric adenocarcinoma admitted to the First People’s Hospital of Hefei, from February 2016 to July 2020 were selected as the research objects. All patients underwent conventional CT scan and spectral CT scan. The CT values and IC values of the arterial and venous phases of metastatic lymph nodes and non-metastatic lymph nodes were compared, and the CT values and IC values of the arterial and venous phases of metastatic lymph nodes of different degrees of differentiation were compared. The receiver operating characteristic (ROC) curve of the quantitative parameters of spectral CT in the differential diagnosis of gastric adenocarcinoma lymph node metastasis was drawed, and its diagnostic efficiency was analyzed. Results The CT values and IC values of arterial and venous phase of metastatic lymph nodes were significantly higher than those of non-metastatic lymph nodes, the differences were statistically significant (all P ＜ 0.05). In metastatic lymph nodes, the CT values and IC values of arterial and venous phase of poorly differentiated adenocarcinoma were significantly lower than those of moderately and highly differentiated adenocarcinoma, the differences were statistically significant (all P ＜ 0.05). The area under the curve (AUC) of the arterial phase CT value, venous phase CT value, arterial phase IC value, and venous phase IC value in the diagnosis of gastric adenocarcinoma lymph node metastasis are 0.803, 0.712, 0.849 and 0.784, respectively, they had high accuracy in judging lymph node metastasis of gastric adenocarcinoma. Conclusion The CT value and IC value of arterial and venous phase in spectral CT scan have important value in preoperative evaluation of lymph node properties of patients with gastric adenocarcinoma, which can be used as quantitative indicators to evaluate the condition, efficacy and prognosis of patients with gastric adenocarcinoma.

Key words： Gastric adenocarcinoma Metastatic lymph nodes Spectral CT scan CT value Iodine concentration value

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	LI Zuyin ZHU Di XIA Chunhua▲

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LI Zuyin ZHU Di XIA Chunhua▲. Clinical application of CT value and IC value of spectral CT scan in qualitative assessment of lymph nodes in gastric adenocarcinoma[J]. 中国医药导报, 2021, 18(4): 147-150,183.

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http://www.yiyaodaobao.com.cn/EN/ OR http://www.yiyaodaobao.com.cn/EN/Y2021/V18/I4/147

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