一般而言，三維影像可輔助醫師進行術前診斷，提高複雜手術的成功率。由此，本研究以常用於骨科手術之C-arm系統，整合一光學式定位裝置，進行C-arm影像的三維重建；其成本較使用CT影像低，且配合C-arm的高機動性，可避免病人排CT掃描所需等待之時間及健保給付的問題。
本研究分成三部份，依序為C-arm取像、影像前處理與影像重建等步驟。在C-arm取像方面，利用光學式定位裝置量測並計算C-arm旋轉的方位，配合影像擷取卡擷取各方向的C-arm影像。在影像前處理方面，利用雙線性內插方式將附加標記的灰階值以鄰近點灰階值取代。在影像重建方面，針對C-arm系統之錐狀投影特性，以適用於錐狀投影的FDK演算法方式，配合一般平行投影方式回推原物體的各個像素的灰階值，最後將重建完成的影像利用行進方塊法(Marching Cube)進行三維表面模型的繪製。
本研究共進行兩項實驗，其一為驗證重建原理用的壓克力方塊實驗，其二為應用豬骨關節當重建物的實驗。前者所得之模型尺寸，其邊長誤差介於0.47(1.2%)至1.35mm(3.4%)左右，與實際物體差異不大；後者的形狀較不規則，又加上取像張數並不足夠，其外型會有破碎的情況發生，但整體外型尚可分辨。

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