Abstract
Objective To explore the clinical value of ultra high resolution CT in the diagnosis of pulmonary nodules. Methods From January 2014 to December 2016, 120 cases with small pulmonary nodules and confirmed by pathology(maximum diameter less than or equal to 2cm) in the Fifth People's Hospital of Datong were included in the study.The 120 patients received high resolution CT scan(512×512 matrix), ultra high resolution CT scan(1 024×1 024 matrix). The images of two kinds of resolution CT were observed and analyzed, compared with high-resolution CT scan, ultra high resolution CT scanning for detection of small pulmonary nodules, CT signs detection situation, qualitative diagnosis, image quality. Results Compared with the high resolution CT scan, ultra high resolution CT scan had no statistically significant differences in the detective rate of maximum diameter of 0.5~2cm small pulmonary nodules (χ2=0.695, P>0.05), but the maximum diameter of the ultra high resolution CT scan less than or equal to 0.5cm small lung nodules detected more than that of the high resolution CT scan(χ2=6.021, P 0.05). The diagnostic accordance rates of the ultra high resolution CT scan for pulmonary malignant nodules and benign nodules were 98.08%, 97.06%, respectively, which were higher than those of the high resolution CT scan(86.54%, 85.29%, χ2=4.875, 5.850, all P 0.05). Conclusion Compared with the conventional high resolution CT scan, ultra high resolution CT scan is better for small pulmonary nodules image quality, and can accurately diagnose small pulmonary nodules, with high diagnostic accuracy, especially for the maximum diameter of less than 0.5cm of small pulmonary nodules. Key words: Solitary pulmonary nodule; Tomography, X-ray computed; Diagnosis
Published Version
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