| PrefaceBronchial arteries are the nutrition vessels of bronchial wall and pulmonary support structure, most of pulmonary diseases are combined with the changes of bronchial arteries on morphology, distribution and blood flowing. Moreover, bronchial arteries are the therapeutic pathways of many pulmonary diseases. The related research on bronchial arteries has become very important, hi this study we collected 101 patients with enhanced MSCT scanning to detect bronchial arteries, evaluate the scanning technique of bronchial arteries with MSCT and try to improve the detective ability, further to evaluate its clinical signification.Materials and methods40 cases of lung cancer, 10 cases of bronchiectasis, 10 cases of pulmonary inflammation, 11 cases of pulmonary embolism, and 30 cases as normal contrast group. All cases were examined with thin-slice enhanced MSCT, scanned from aortic arch to diaphragm top in one breathing hold. Speed 0.5s/round, data collection thickness 1.0mm, pitch 5.5, contrast medium dose 1.5ml/kg, injection speed 3.0ml/s, delay time 15s, reconstruction interval 0.5mm, reconstruction thickness 1.0mm. Image data were reviewed by two radiology physician. Then grouped the data by arterial origin and pathwayentering in lung. Measure the inner diameter of bronchial artery and the CT value of the same foci of lung cancer and metastatic lymph node before and after enhancement. Contrast the detective rate of left and right bronchial artery in every group with X2 test, processing the inner diameter of left and right bronchial artery in every group by analysis of variance, the enhanced degree of cancer foci or metastatic node and inner diameter of both bronchial artery were analyzed with Pearson relative analysis.ResultsIn 101 cases, the left and right bronchial artery were both undetected in 25 cases, both detected in 59 cases, detected one side in 17 cases; the left artery detective rate was 67.33%, while the right side was 66.34%. In 13 cases 2 bronchial arteries were detected in left side, while in 12 cases detected in right side; among which 3 arteries were all detected in left side. Altogether, MSCT scanning showed 79 right bronchial arteries and 83 left bronchial arteries. 35 right bronchial arteries were co-originated with intercostals arteries, and 1 left side co-originated. Co-originated left and right side bronchial artery were detected in 23 cases. 59 of right bronchial artery(74.7%) entered in the lung behind right main bronchus, the other 20(25.3%) entered through medial side, In 83 left side bronchial arteries, 23 arteries (27.7%)entered in the lung behind the left main bronchus, 38 (45.8%)entered in through the supra side, other 22(26.5%) through medial side of left bronchus, In 30 lung cancer cases MSCT images showed the bronchial arteries entered into the foci clearly.Contrast the detective rate of left and right bronchial artery in every group with X2 test, there was significant difference betweenlung cancer group, bronchiectasis group and normal group(P<0.005), while there was no statistic differences between other groups(P>0.05).There was obvious statistic difference(P<0.05) in the diameter of bronchial artery between lung cancer group and other groups as normal, pulmonary embolism, pulmonary inflammation and bronchoectasis group; the same as bronchoectasis group compared with normal, embolism and inflammation group(P<0.05). While there was no statistic difference(P>0.05) between inflammation, embolism and normal groups.The inner diameter of left and right bronchial artery in right lung cancer group were 2.1000±0.4600mm, 2.6150±0.6523mm respectively; 2.1692±0.5105mm, 1.9000±0.4848mm in left lung cancer group respectively. The inner bronchial artery diameter of the same side with cancer foci was larger than the other side without cancer(P<0.05). The enhancement degree of cancer foci and metastatic node was positively correlated with both side inner diameter of bronchial arteries.Discussion1.The MSCT detective technique of bronchial art...
|
PDF Full Text Request