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发表时间：2009-01-01

发表刊物：光电子 激光

所属单位：国际信息与软件学院

卷号：20

期号：7

页面范围：977-982

ISSN号：1005-0086

摘要：A novel simulation method is proposed to obtain the geometric parameters
   of target prebending plate before the operation for complete
   fracture.The main processing scheme consists of the following steps:
   Firstly the serial tomograms of fracture part from CT scan are got and
   denoised by Curvelet transform and 3-D reconstructing; Secondly a method
   based on vertex normal feature is utilized to obtain fractured bone
   section;Thirdly a coarse registration based on minimum bounding box and
   a precise registration based on non-iterative estimation are combined to
   align the two sections,also the two fractured bone models are
   aligned;Lastly,an accurate NURBS surface fitting method is used to fit
   the plate,and the geometric parameters are measured.The humeral fracture
   and rib fracture are chosen as experimental subjects.The prebended plate
   models produced attach to the bone hermetically,and the geometric
   parameters are accurate to meet the clinic need.This new method affords
   technical support to shorten operation time and improve operation
   quality.

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