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Objective: To further explore the 64-slice spiral CTA and DSA method of combining bronchial artery and pulmonary artery blood supply of malignant lung tumors , and to provide a theoretical basis for interventional treatment . Methods: 17 patients with lung cancer of Lanzhou University hospital , the primary 15 cases , the transfer of two cases . All patients first 64 - slice spiral CT scan check , from the lower neck to the pulmonary bottom scan , thickness 0.6mm pitch 1.4mm , then from peripheral intravenous non-ionic contrast agent at a dose of 80- 100ml injection flow rate of 4 - 5mL / s. The delay time of 15-20S or use artificial intelligence to trigger ( trigger threshold is set at the trigger point 100HU, placed in the pulmonary trunk ) scanning method will delay the time individualized , effective thickness 1.0mm , reorganization intervals 0.5mm . Bronchial artery , pulmonary artery reconstruction . The next day the patient moved to the the DSA bed under local anesthesia using a modified Seldinger puncture technique , the right femoral artery , femoral vein 4F, 6F catheter ultra- election to the the ipsilateral bronchial artery and pulmonary entrance , connected to the high pressure injector flow rate were 1-2ml / s, 10ml / s, contrast agents were 3-5ml ,30-40ml DSA examination . The results of the blood supply of malignant lung tumors : three kinds of imaging methods : either DSA or 64- slice spiral CTA , bronchial arteriography visible tumor internal chaotic tumors of vascular shadow , as well as the contrast agent into the tumor internal . 13 patients with primary malignant lung tumors visible tumor vessels increased significantly , two patients with primary and metastatic tumor seen in the shadow of abnormal blood vessels , but not increased . Pulmonary angiography : DSA angiography can not determine the pulmonary whether supply the tumor ; 2 masses, internal 64 - slice CTA can clear pulmonary involved in blood supply (1 patients with primary lung squamous cell carcinoma , metastatic lung sarcoma ) tumor vasculature criteria completely in line with the principles of research and evaluation for lung tumor blood supply Han Ming Kwan said . Conclusion : Pulmonary involvement blood supply of malignant lung tumors , pulmonary artery ways to improve the efficacy of poor bronchial artery infusion chemotherapy of malignant lung tumors .
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