# ImageJ 教學:分析超音波影像 > [name=dicky1031][time=Fri, Oct 6, 2023 5:57 PM][color=#1aba0e] ## 下載ImageJ 到官網下載相對應的應用程式 https://imagej.nih.gov/ij/download.html ![](https://hackmd.io/_uploads/rywAc86gp.png) 打開ImageJ ![](https://hackmd.io/_uploads/Sy0epIpxp.png) ## 操作步驟 ### 匯入超音波影像 File -> Open ### 找出比例尺 使用straight line把圖上的10mm部分畫出來 ![](https://hackmd.io/_uploads/BkIFCUpeT.png) Analyze --> Set Scale ![](https://hackmd.io/_uploads/HJjlbPplp.png) 此時如圖上所示,程式告訴你這段長度等於107.0047個pixels, 這時把known distance填 10 unit of length 填 mm 接著按ok ![](https://hackmd.io/_uploads/Hy3DWD6gT.png) ### 量測IJV長短軸 選用直線,在長軸短軸畫出來後,Analyze-->Measure(快捷鍵Ctrl+M)來量測長度 ![](https://hackmd.io/_uploads/rknhWvTxT.png) ![](https://hackmd.io/_uploads/r1GJzw6ep.png) ## 延伸閱讀 1. [ImageJ 教學:分析光譜照片](https://hackmd.io/@yizhewang/BkRtEa0VN#%E5%BB%B6%E4%BC%B8%E9%96%B1%E8%AE%80) --- ###### tags : `ImageJ`
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