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Methods morphology ,opening,closing and hemodynamicon short axes section of large arteries and on long axessection of aorta were observed.results thickening,calcification ,hemodynamic,morphologic changes of the aortic wall were exacerated with increased age of patients.conclusion cdfi is of great valve in diagnosing bicuspid aortic valve.

重点通过大动脉短轴及主动脉长轴等切面观察二叶式主动脉瓣的形态、回声、启闭及血流动力学情况。结果:随着年龄的增长,瓣膜增厚、钙化、血液动力学、心脏形态学改变逐渐加重。结论:彩超对先天性二叶式主动脉瓣畸形及病变的诊断具有重要意义。

In the current study it is difficult to be certain that the decreased aortic distensibility in aortic dissection were due to structural changes of the aortic wall, or simply reflected dilated aortic dimension and aortic valve regurgitation. Further study is necessary to elucidate the underlying mechanisms for this abnormalities.

本研究用无创的超声技术证明主动脉夹层之升主动脉扩张性明显降低,这对主动脉夹层病因学的进一步深入研究无疑具有重要意义;但其降低是由于血管本身结构异常所致还是继发于血管内径的扩张尚有待进一步深入研究。

With the establishment of animal models of aortic homograft transplantation, using immunohistochemical staining, the difference of the expression of MHC Ⅰ antigen and MHC Ⅱ antigen was detected between fresh aortic homografts and cryopreserved ao rtic homografts.

建立大鼠同种异体主动脉移植模型,采用免疫组织化学实验研究新鲜主动脉和低温保存的主动脉同种异体移植后MHC Ⅰ类抗原和MHCⅡ类抗原表达的区别。

Thrombosis inside the false cavities were displayed clearly in 5 cases, the intimal tear in 10 cases was shown definitely in the CTVE images. Conclusion: Due to the non-invasiveness, painlessness, convenience, and safety of this examination technique, MSCT and CTVE should he the first choice for the detection of AD.

CTVE技术是一种无创伤、无痛苦,快捷、安全、有效的检查技术,能显示主动脉夹层的真假腔,显示破口的部位、夹层和假腔内的血检,了解主动脉各分支有否受侵和受侵的程度,是诊断主动脉夹层有价值的检查方法之一。

Of the top of the superior aortic recess extended to the level of the aortic arch from which the branchiocephalic trunk arises. At the level of the aortic arch, 100%of the lymph nodes of superior vena cava were located among the aortic arch, superior vena cava and trachea. At the level of azygos vein, 100%of the lymph nodes of azygos vein and the superior aortic recess were located among the superior vena cava, arch of azygos vein, trachea and concavity of aortic arch.

主动脉弓和奇静脉弓在同一横平面占20.00%±7.30%,40.00%±8.94%的奇静脉弓在主动脉弓凹面平面;②80.00%±7.30%的主动脉上隐窝上界位于主动脉弓右前端头臂干起始处;③在主动脉弓平面,腔静脉后淋巴结位于主动脉弓、上腔静脉和气管之间,出现率为100%;④在奇静脉弓平面,奇静脉弓淋巴结和主动脉上隐窝位于上腔静脉、奇静脉弓、气管和主动脉凹面所围成的气管前间隙内。

143 patients with sacrum tumor were divided into 6 groups according to different methods to control bleeding: non-vessel controlled in 21 cases, transcatheter arterial embolization before operation in 12 cases, hypogastric artery ligation in 71 cases ,temporary balloon occlusion of abdominal aorta in 9 cases, intermittent block of lower abdominal aorta in 5 cases, intermittent block of lower abdominal aorta and hypogastric artery ligation in 25 cases .

将143例骶骨肿瘤患者根据术中控制出血方法的不同分为6组,术前介入靶血管栓塞12例,髂内动脉结扎71例,球囊导管腹主动脉阻断9例,单纯低位腹主动脉阻断5例,低位腹主动脉阻断加髂内动脉结扎25例,未行控制出血的对照组21例。

Results]All 18 cases were observed the real and the false cavity satisfiedly in two kinds of scanning.

结果]18例患者MSCT主动脉全程增强扫描均满意观察到真、假腔的大小、范围、主要分支是否受累。18例采用心电门控扫描显示胸廓入口至主动脉裂口水平的主动脉真假腔与全程增强扫描一致。

Ascending aortic diameters were compared between diameter0 mm group and diameter≥40 mm group, BAV group and TAV group, respectively, to clarify ascending aortic diameter change tendency following AVR alone.

按不同的分组对升主动脉直径的大小进行比较,研究主动脉瓣置换术后升主动脉直径的变化趋势。

To study the changes in diameter of dilated ascending aorta following aortic valve replacement.

研究主动脉瓣病变合并升主动脉扩张的病人在瓣膜置换术后其升主动脉大小的变化。

With the establishment of animal models of aortic homograft trans-plantation,using immunohistochemical staining,the differ-ence of the expression of MHCⅠantigen and MHCⅡanti-gen was detected between fresh aortic homografts and cryop-reserved aortic homografts.

建立大鼠同种异体主动脉移植模型,采用免疫组织化学实验研究新鲜主动脉和低温保存的主动脉同种异体移植后MHCⅠ类抗原和MHCⅡ类抗原表达的区别。

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