雙源CT肺動脈造影在慢性肺栓塞中的應(yīng)用價值
[Abstract]:Objective to investigate the imaging features and clinical value of dual-source CT pulmonary angiography in the diagnosis of chronic pulmonary embolism. Methods 75 cases of double source CT pulmonary angiography were selected. The CTPA images were analyzed synthetically on the basis of axial images, combined with the post-processing techniques such as multiplanar reconstruction of (MPR), maximum density projection (MIP), volume reconstruction (VR). Results 26 cases of chronic pulmonary embolism were diagnosed by CTPA. The direct signs of CTPA of chronic pulmonary embolism were as follows: (1) eccentric low-density filling defect in pulmonary artery and obtuse angle between embolus and wall in 5 cases; (2) Intravascular wall was not only complete in 7 cases; (3) low density filling defect was found in 3 cases; (4) lumen was reduced in 5 cases; (5) lumen was completely blocked without enhancement in 2 cases; and (6) pulmonary artery branch was decreased in 4 cases. The indirect signs in the lung were thin, or glass-like, with "mosaic" sign, pleural thickening, pleural effusion, disklike atelectasis, irregular or wedge-shaped pulmonary infarction, "pulmonary oligoblood" sign, pulmonary hypertension. Right ventricular enlargement with or without septal deviation pericardial effusion bronchial artery dilatation ipsilateral bronchiectasis. Conclusion Dual-source CT pulmonary angiography is a rapid and noninvasive method for the diagnosis of chronic pulmonary embolism. It can accurately diagnose chronic pulmonary embolism according to direct signs and has certain guiding significance for clinical treatment.
【作者單位】: 新疆醫(yī)科大學(xué)第一附屬醫(yī)院影像中心;
【基金】:新疆維吾爾自治區(qū)自然科學(xué)基金(2014211C057)
【分類號】:R563.5;R816.4
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