Related Experiment Video
Updated: Aug 23, 2026
A 3D Digital Model for the Diagnosis and Treatment of Pulmonary Nodules
Published on: May 19, 2023
[The value of three-phase pulmonary helical CT in diagnosing peripheral pulmonary cancer (diameter <or= 3 cm)]
Li-lian Tan1, Yang-bin Li, Shu-xin Li
1CT Division, the Second Affiliated Hospital of Guangzhou Medical College, Guangzhou 510260, China. liliantan@163.com
Objective:
To evaluate the value of three-phase pulmonary helical CT in diagnosing peripheral pulmonary cancer (diameter
Methods:
Serial single-slice dynamic scans were obtained with helical CT before and after injection of 100 ml contrast material in 60 patients with solitary pulmonary nodules (SPNs, diameter
Results:
The delayed times of three-phase pulmonary helical CT were pulmonary artery phase (15 second), bronchial artery phase (36 second), equilibrium phase (90 second) respectively. The prevalence model of density change for three-phase pulmonary helical CT: no enhancement, marked enhancement, moderate-enhancement in pulmonary cancer; slight or moderate-enhancement, marked-enhancement, marked-enhancement in inflammatory nodules; no enhancement or light-enhancement in tuberculoma and metastatic nodules. The enhanced branch and small spot vessels were demonstrated by bronchial artery phase in 82.9% of pulmonary cancer nodules.
Conclusion:
The three-phase pulmonary helical CT could reflect the enhancement feature, blood supply of bronchial artery in peripheral pulmonary cancer (diameter
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