重建

The numerical experiment results show that the imaging convergent speed of the direct demodulation imaging method is accelerated dramatically using the ways proposed in the present paper.Furthermore, the author proposes one way to improve timing performance of parallel interpolative algebraic reconstruction.

此外初步研究了平行束的插值代数重建算法，在求像素投影地址时利用像素与像素投影之间的相关性和图像区域的对称性来提高插值代数重建算法重建图像的速度。

Methods A wet hip joint's sample from corpse was scaned by CT and all images of every cross-section hip joint's layer was obtained, and an hip joint's model was contructed with Unigraphics NX 2.0 and Solid Works 2006 SP 0.0 software. The models were assembled when simulated total hip arthroplasty after total hip joint prosthetic and ischiofemoral ligament model had been constructured. Analysis was done on von Mises stress distribution and amount of total hip component when simulated seated leg-crossing manuver. The bone and metal components were meshed as rigid bodies, composed of three-dimensional, all-quadrilateral rigid body elements, and hip joint capsule ligament was fully three-dimensional, hexahedral continuum elements representations. Results The current form of this ischiofemoral ligament's reconstruction finite element model provided for multi-body contact, large displacement interfacial sliding, large deformation capsule ligament representation, and clearly reflected the real ischiofemoral ligansent's anatomy and biomechanical behavior. The maximum on Mises stresses at the joint interface was more than that fur an otherwise identical hardware-only construct.

选择成人尸体髋关节行CT成像得到髋关节每层横截面图像，提取边界坐标，利用有限元分析软件Unigraphics NX 2.0和Solid-Works 2006 SP0.0构建出髋关节三维有限元模型及人工髋关节假体，并模拟全髋置换术进行装配，将坐股韧带按其术中重建位置进行构建骨骼与金属模型采用三维十节点四面体实体单元进行网格划分，关节囊六面体连接单元划分，模拟坐位腿交叉动作载荷获取假体撞击过程的角活动度和相应的von Mises应力分布情况结果所构建的多体连接、大界面划移、大变形的坐股韧带重建有限元模型，客观反映坐股韧带真实解剖形态及生物力学行为，增加坐股韧带重建的模型其关节面的最大主应力值大于仅有金属的模型。

The image reconstruction algorithms is thoroughly researched. The Filter Back Projection , Algebra Reconstruction Technology and fan beam data rearrangement algorithm used in medical computer tomography are improved. The NOSER algorithm, linear neural networks method and Hopfield neural networks method are presented and gain the better result of image reconstruction.

深入研究了图像重建算法，改进了医学CT的滤波反投影算法、代数重建技术和扇束投影数据重排方法，提出了带图像光滑约束的NOSER算法、线性神经网络方法和Hopfield神经网络方法，并得到了较好的图像重建结果。

Platysma flap is a viable and reliable method for lower facial reconstruction not only after malignancy ablation surgery but also for other lesions, including scar contracture after corrosive injury, post-irradiation fistula, and noma.

利用阔颈肌肉皮瓣来重建下半部颜面缺陷是个可行而且可靠的方法。不但可以用在肿瘤切除后重建，也可以用在其它方面的重建，包括腐蚀性伤害后疤痕收缩，放射线治疗后形成的瘻管，以及口颊坏疽。

In addition, the summer AO mode changes much between before and after the abrupt change, especially the pleion in the East Asian land.

从夏季AO指数和EASM指数奇异谱分析的重建序列中发现，它们的长期趋势以及准20-30a周期的重建序列的相关系数较高，而它们的年际的周期的重建序列的相关系数不显著。

Therefore, reconstruction of joint function following ACL injury is focus on reconstruction of both joint biomechanical stability and proprioceptive sense.

因此提出前交叉韧带损伤关节功能的重建，不仅应包括关节生物力学稳定性的重建，而且还应有本体感觉的重建。

SART is an important arithmetic of image reconstruction, in which the projection computation takes over half of the reconstruction time.

联合代数重建法是CT重建的一种重要方法，算法中投影计算时间占重建时间的一半以上。

The theoretical knowledge and experimental research shows that this method can increase the reconstruction speed.Based on SART, a modified simultaneous algebraic reconstruction method is also presented, which takes into account both the density of pixel an

对代数重建法和联合代数重建法的思想根源以及由此而导致的性能上的差异进行了研究分析，提出了基于代数重建法的改进算法，该算法将相邻的像素综

33 patients with AVD were studied by dynamic three-dimensional(3-D)reconstruction.18 men and 15 women 14－56 of age involved in this sutdy.Hewlett Packard 2500 echocardiography with 5.0/3.7 MHz multiplane transesophageal probe was used for data acquisition,and Tomtec echo scan system used for 3-D reconstruction.Acquired images were extracted and reconstructed by computer system.The condition of ATC and valve were viewed from atrioventricular lateral aspect.Results:The valvular replacement operations were performed on the patients suffered from thickened,calcified,thinned or broken tendinous cordae.

我们应用动态三维重建技术，研究了33例房室瓣病变患者的腱索，其中男性18例，女性15例，年龄14-56岁，全部病例经手术及/或心导管证实，图像采集使用HP SONOS 2500超声心动图仪(配有3.7/5.0MHz的多平面经食道探头)，三维重建采用TOMTEC ECHO SCAN系统，将采集的图像提取并重建，从房室的侧面观察房室瓣腱索及瓣膜情况。

Seven patients were admitted into this department in acute phase of trauma, repair of popliteal artery in 2 patients and repair of PMC and MCL in 4 patients were performed in this phase. Arthroscopic combined reconstruction of ACL and PCL with autografts was performed in all patients from 4 to 12 weeks after trauma, reconstruction of PLC with the posterior half of biceps femoris tendon tenodesis in 3 patients and reconstruction of PMC and MCL with femoral fascia in 1 patient were completed simultaneously.

方法］自2001年9月~2005年2月，13例病人（13膝）经关节镜检查证明ACL和PCL均断裂，其中5膝伴后内侧角、内侧副韧带损伤，4膝伴后外侧角损伤，2膝伴外侧半月板破裂，1膝伴内侧半月板损伤，3膝伴动脉损伤，2膝伴腓分神经损伤。7例病人于损伤后急性期入院，2膝于急性期行血管探查修复，4膝行膝后内侧角、内侧副韧带修复。13例病人于伤后4~12周在关节镜下行自体移植物单束ACL和PCL联合重建术，其中4例同期后1/2 股二头肌腱重建后PLC，1例同期阔筋膜PMC、MCL重建。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了