Diagnosis analysis of pulmonary nodule by low-dose multi-slice spiral CT scan

Objective To investigate the diagnosis value of low-dose multi-slice spiral CT scan on pulmonary nodule,in order to provide reference for clinical diagnosis.Methods Imaging data of 50 cases of patients with pulmonary nodule detected by multi-slice spiral CT scan were analyzed retrospectively,CT regular doses and 30 mA low-doses for chest scanning were adopted,the detection number and morphology of lung nodules were compared.Results 68 pieces of nodules were checked out by both two doses of detection methods,the results of lung nodules morphology such as calcification,hollow,burr levy,lobulated sign,bronchial levy and pleural adhesions of low-dose scanning were compared with the regular doses,the differences were not statistically significant(P 0.05);the pulmonary nodules diameter was(11.2 ±6.5) mm by regular doses scans measure,the lung nodules average diameter was(11.3 ±6.1) mm by low-dose scans measure,the difference was not statistically significant(P 0.05).Conclusion The chest value of low-dose CT scans is equal with conventional scanning,and low-doses CT scan has less radiation hazard,so low-dose CT scan application in diagnosis of pulmonary nodules diagnosis is feasible.It is worthy of clinical application.