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| Clinical Value of Spiral CT and PET-CT in the Diagnosis of Lung Cancer and Lymph Node Metastasis |
| WANG Jiafu, LIN Lin, LIN Yaoyun, et al |
| The First Affiliated Hospital of Harbin Medical University, Heilongjiang Haerbin 150001, China |
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Abstract Objective: To explore the clinical value of spiral CT and PET-CT scan in the diagnosis of lung cancer and lymph node metastasis. Methods: 96 patients with lung cancer and suspected lymph node metastasis admitted to our hospital from January 2018 to August 2019 were selected. Within 2 weeks, spiral CT and PET-CT were performed. Based on the final surgical and pathological results, the efficacy of the two diagnostic methods in the diagnosis of lung cancer and lymph node metastasis was compared. Results: The results of surgical pathology showed that among 96 patients with suspected lung cancer lymph node metastasis, 22 had no lymph node metastasis and 74 had lymph node metastasis. Among them, 32 had local recurrence lesions; a total of 102 metastatic lymph nodes were detected, of which diameter There are 6 metastatic lymph nodes of ≤0.5cm, 75 metastatic lymph nodes of 0.5 ~ 1.0cm, and 21 metastatic lymph nodes of diameter ≥1.0cm. The accuracy, sensitivity, specificity, positive prediction rate, and negative prediction rate of spiral CT and PET-CT in the diagnosis of lung cancer lymph nodes were 75.0%, 74.3%, 77.3%, 91.7%, 47.2%; 94.8%, 97.4%, 86.4% , 96.0%, 90.5%. In the detection of metastatic lymph nodes, the total detection rate of PET-CT was significantly higher than that of spiral CT (P<0.05). In the detection of metastatic lymph nodes, the total detection rate of PET-CT was significantly higher than that of spiral CT (P<0.05). Among them, the detection rate of PET-CT was significantly higher than that of spiral CT on ≤0.5cm and 0.5-1.0cm metastatic lymph node metastasis, and the difference was statistically significant (P<0.05); on ≥1.0cm metastatic lymph node, neither Significant difference, not statistically significant (P>0.05). Conclusion: Compared with spiral CT diagnosis, PET-CT diagnosis of lung cancer and lymph node metastasis diagnostic efficiency is more significant, with clinical application value, but the cost is higher, broad-spectrum is weak, so it can be used as a further diagnostic means to improve the diagnostic accuracy when spiral CT is difficult to determine.
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2021, Vol. 27 
