【摘要】 目的 探讨多层螺旋CT三维成像在血管病变中的临床应用价值。方法 对27例颈部、体部及四肢血管病变的患者行多层螺旋CT平扫及增强扫描,以多平面重组(MPR)、表面遮盖法(SSD)、实时3D重建(RT-3D)、血管CT仿真内镜(CTVE)等多种方式重建。结果 MPR能保留有助于定性诊断的密度CT征象,多方位地显示附壁血栓、真假腔、充盈缺损等,但缺乏病变与周围解剖结构的立体观;SSD均能直观地显示血管病变的全貌,以及病变与分支血管的关系等,但不能显示管腔内的情况;RT-3D可清楚显示血管壁的钙化、测量各径线参数以及多角度观察病变,其图像优于其他方法的重建图像;CTVE可清晰显示血管狭窄、真假腔、内膜片及钙化斑块的形态。结论 综合应用多层螺旋CT的各种重建技术诊断血管性疾病,为临床提供了一种安全可靠的诊断手段。更多还原

【Abstract】 Purpose To study the clinical application value of 3D reconstruction with multislice spiral CT in blood vessel diseases. Methods 27 patients with blood vessel diseases of neck, body and extremities were performed, MPR (multiplanar reconstruction) , SSD (shaded surface display) ,RT- 3D (real time volume rendering) and CTVE (CT virtual endoscopy) were used. Results MPR could keep the density features , helpful for diagnosis. In any desired orientation it could display mural thrombus, true and false lumen, filling defect, but the image was lack of stereoscopical view of the anatomic relationship between the lesion and surrounding structures. SSD stereoscopically showed panorama of blood vessel lesion and the relation with arterial branches, but couldn t display intra - aortic condition. RT - 3D clearly showed the wall calcification, gauge any diameter and observe the lesion in any desired angle. These images are much better than each others. CTVE could reveal stenosis of arterial branches, the true and false lumen, flap and calcification form. Conclusion Application of combined reconstruction techniques of multislice spiral CT can diagnose of blood vessel diseases. It provides more reliable modality for clinical.更多还原