Application Showing the Pulmonary Artery Related Lesions and Lung Cancer Bronchial Artery by Thoracoabdominal Enhanced Scan of 64-Slice CT

Objective To show of chest pulmonary arterial pipe inside and outside at all levels and the lung cancer bronchial artery by way of CT thoraco-abdominal enhanced hepatic arterial phase scan, it is explored the application value in the thoracic malignancies associated with other lesions and advanced malignancies. Methods 48 cases of tumor data, first diagnosed in 34 patients, including 19 cases of lung cancer, esophageal squamous cell carcinoma in 12 cases, 3 cases of malignant thymoma; tumor treatment follow-up or curative effect observation of 14 cases(3 cases of which have a history of lung surgery).observed no history of lung surgery in 45 cases of pulmonary artery grading, cancer combined with pulmonary embolism, distribution of lymph nodes around the pulmonary artery and its branches; 19 cases of lung cancer is observed tumor blood vessels supplying and the pulmonary artery branch; to measure CT value of 48 cases in pulmonary artery bifurcation level include the ascending aorta, pulmonary artery, descending aorta and vena cava.Results In 45 cases, it showed more than 7 grades pulmonary arteries, the 6 grades can be showed clearly, it found that cancer complicating pulmonary embolism of the 4~6 levels pulmonary in 1 case, the lymph nodes are showed around 5 grades pulmonary arteries. In 19 cases of lung cancer,with diameter ≥ 3cm in all 12 cases were seen supply blood vessels, with 7cases which diameter 3cm, supply blood vessels were seen in 4cases. The main Blood vessel is bronchial artery, part of the intercostal or phrenic artery in the vicinity of peripheral tumors. It revealed a tumor within the pulmonary artery been invaded. Injection delay time of thoracoabdominal combined enhancement scan were located between 22s~33s, mean 29.17±0.45s.The CT values of ascending aorta, pulmonary artery, descending aorta and the superior vena cava were 250.51±4.82 Hu, 270.00±8.26 Hu, 240.41 ± 4.44 Hu, 452.21 ± 29.45 Hu. The CT reinforcement values of them were greater than 200Hu. Conclusion In CT thoracoabdominal combined enhancement scan, the scanning phase is controlled in the chest arteries period of contrast agent for the pulmonary circulation in the late and circulation early, and in its abdomen hepatic arterial phase, the chest can be found the pulmonary tumor complicating pulmonary embolism within 6 grades pulmonary arteries, showing the lymph nodes around 5 grades pulmonary arteries, the invasion of the pulmonary artery within the lung cancer,showing the supply blood vessels of the lung tumor, also found that the abdomen hepatic arterial phase lesions characteristic, it is conducive to diagnosis and differential diagnosis disease with the wider,and guidance of interventional treatment of lung cancer.