目前醫療成像的儀器中，能產生三維（3D）數據的有磁振造影（MRI）、電腦斷層掃描（CT）、正子發射斷層掃描（PET）或單光子發射斷層掃描（SPECT）等。三維數據資料顯示和分析的工具中，擷取等值面(iso-surface extraction)和表面重建技術(surface rendering)是其中相當重要的方法，本篇以ImageJ 3D viewer進行三維表面重建模型的理論、實作的過程和輸出動畫電影的步驟進行介紹，期望能夠作為一般使用者和
教學的參考。

Current medical imaging modalities such as Magnetic Resonance Imaging (MRI), Computed Tomography (CT), Positron Emission Tomography (PET) or Single Photon Emission Computed Tomography (SPECT) yield three-dimensional (3D) data sets. Iso-surface extraction and surface rendering are the important approaches for 3D representation of the data set. This article introduces a freely available ImageJ 3D Viewer and shows the individual steps to construct the 3D surface rendering model. Additionally, a movie demonstrating can be created by the basic usage of ImageJ function. Expect this article to be able to become a reference of general user or aids for teaching purpose.