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| Analyzation of Clinical Value of Thin Layer Scanning and Reconstruction under Different Positions in the Diagnosis of Benign and Malignant Small Pulmonary Nodules |
| HE Xi, LIU Hongdi, LIAO Lin |
| First-author's address: Pingxiang People's Hospital, Jiangxi Province, Pingxiang 337000, China |
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Abstract Objective: To explore the clinical value of thin layer scanning and reconstruction under different positions in the diagnosis of benign and malignant small pulmonary nodules. Method: A total of 40 patients with small pulmonary nodules admitted to Pingxiang People's Hospital from September 2021 to September 2022 were selected. All patients needed further examination to determine the benign and malignant nodules, they received conventional CT scanning, thin layer scanning and reconstruction under different positions. The scores of lesion CT signs (morphological margin, tumor-lung interface, internal structure, adjacent structure) of different examination methods and the clinical diagnostic value on benign and malignant nodules were compared. Result: Compared with conventional CT, the scores of morphological margin, tumor-lung interface, internal structure and adjacent structure of thin layer scanning and reconstruction under different positions were increased, the differences were statistically significant (P<0.05). Conventional CT diagnosis revealed that there were 4 cases of benign small pulmonary nodules, 36 malignant cases, 2 cases of misdiagnosis and 2 cases of missed diagnosis, and the sensitivity, specificity, accuracy rate of malignant diagnosis were 94.44% (34/36), 50.00% (2/4) and 90.00% (36/40), respectively, the Kappa value was 0.444, which was moderately consistent with the pathological diagnosis. 4 cases of benign small pulmonary nodules and 36 cases of malignant small pulmonary nodules were diagnosed by thin layer scanning and reconstruction under different positions, and 1 case was misdiagnosed, 1 case was missed. The sensitivity, specificity and accuracy rate of malignant diagnosis were 97.22% (35/36), 75.00% (3/4) and 95.00% (38/40), respectively, the Kappa value was 0.722, the results were highly consistent with the pathological diagnosis. Conclusion: Thin layer scanning and reconstruction under different positions has better image quality and CT signs in the diagnosis of benign and malignant small pulmonary nodules, and can obtain high diagnostic efficiency.
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Received: 28 June 2023
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