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目的观察和评价先天心脏病肺动脉高压的CT征象。方法建立先天心脏病肺动脉高压(PAHCHD)的量化诊断指标。结果 PAHCHD的特异征象包括主肺动脉瘤样扩张,中外带肺动脉的Ⅱ、Ⅲ级改变和肺小叶中心动脉Ⅱ级改变。PAHCHD的非特异征象包括肺小叶中心动脉Ⅰ级改变,马赛克征、肺小叶间隔增厚、胸膜下袖套征。结论当MPA>32mm、左右肺动脉>24mm。左右下肺动脉>17mm、MPA/TR>1.7、MPA/AO>1是诊断PAHCHD较敏感量化指标,并以MPA/TR1.7诊断PAHCHD更可靠。
Objective To observe and evaluate CT signs of pulmonary hypertension in patients with congenital heart disease. Methods To establish quantitative diagnostic indicators of pulmonary hypertension (PAHCHD) in congenital heart disease. Results The specific signs of PAHCHD included major pulmonary aneurysm-like dilatation, grade Ⅱ and Ⅲ changes of pulmonary artery in China and abroad, and grade Ⅱ changes of pulmonary heart valve. The non-specific signs of PAHCHD include the change of grade Ⅰ in the central lobe of the lung, the mosaic sign, the thickening of the interlobular septum and the cuff cuff. Conclusion When MPA> 32mm, left and right pulmonary artery> 24mm. Left and right lower pulmonary artery> 17mm, MPA / TR> 1.7, MPA / AO> 1 are more sensitive indicators for the diagnosis of PAHCHD, and the diagnosis of PAHCHD by MPA / TR1.7 is more reliable.