近年來，隨著心導管介入性治療的進步與發展，心房中膈缺損關閉術已經成為治療第二型心房中膈缺損的主要方式。心血管介入性治療的優點有: 治療中出血量少，傷口更小，也比傳統開心臟手術減少疼痛並縮短住院時間。然而，治療中所提供的二維X光影像無法提供實施治療者精確的人體心臟立體結構與缺損實際的三維位置，所以對於新進的醫師來說，是具有一定的困難度的。一般來說，心血管介入性治療的訓練都是由資深醫師帶領新進醫生學習，但這種方式具有一定的潛在危險性，因此本研究將設計一套心房中膈缺損之雙導管電腦模擬訓練系統，提供醫師做為練習的平台，熟悉治療中的各個流程，學習如何操縱導管，使之能引導至正確位置進行診斷及治療。
系統提供使用者介面包含醫師操作時參數的紀錄，例如:手施予導管的力量、雙導管的位移與旋轉角度、完成治療流程所需時間…等。同時在介面中顯示顯影圖像，讓醫師了解治療過程中，導管在人體內的相關位置做為參考。此外，本系統也可設定或提供治療中可能遇到的真實情況做模擬，例如特定位置導管的操作技巧，如果不小心碰撞到血管壁，將會產生反推力量讓使用者有所感知並調整，使模擬過程更加真實並且達到練習成果。未來可以做為醫院的教學平台，讓使用者可以在無風險及低成本的環境下，重複練習治療流程而達到熟練效果，增加治療的成功率。

In recent years, with the development of cardiovascular interventional procedure, atrial septal defect (ASD) surgery has become the main way to treat type II ASD. The advantages of cardiovascular interventional procedure are: reduce the possibility of infection, general anesthesia and the time of being in hospital. However, two-dimensional X-ray images provided in the procedure could not provide surgeons the actual structure of heart and precise three-dimensional position of the defect, so it’s not so easy for a new physician to perform. In general, new doctors is led by a senior physician for procedure training, but this approach has some potential dangers, therefore, this study will design a computer simulation of double-catheter training system for atrial septal defect that provides physician a platform to practice and be familiar with the operation of various processes, including learning how to manipulate the catheter to the correct position for diagnosis and treatment.
The system provides the user interface including the records of the operating parameters such as the exerted force on the catheter, the displacement and rotation angle of the double catheter, the processing time required to complete a treatment…etc. In addition, the system can be set or provide the real situation which may be encountered while doing simulations of the treatment, for example, the operating skills of passing through the specific location, if the users accidentally bump into the vessel wall, the simulating training system will generate reverse thrust force to the users so that it can make the simulation more realistic and achieve the training outcomes. In the future, we expected that the system can be applied as a teaching platform in hospital that allows users to practice repeatedly to achieve proficiency results and finally improve the success rate of treatment.

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