方法：采取右侧小切口及横断胸骨小切口，对23例二尖瓣、主动脉瓣病变患者行瓣膜置换术。

Methods: Through right minimally incision and transected sternal incision, 23 patients underwent mitral or aortic valve replacement.

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在主动脉瘤及主动脉夹层中，横断面影像准确、可靠，而三维及多平面重建（MPR）在空间关系的显示上具有优势。

For aneurysm and aortic dissection, axial image was most accurate, but SSD, MIP, MPR were better in showing the space relationship of targic vascular lesions with its main branches.

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