急診電腦斷層檢查排程導入檢傷分類概念之可用性評估

電腦斷層攝影檢查是一項可應用於全身，具備檢查速度快、普及性高且非侵入性的檢查，也因為此特性，電腦斷層是醫界目前公認最方便、迅速的檢查利器，尤其是分秒必爭的急診病人(Boone & McCollough, 2021)。然而台灣的急診就醫人次逐年增加，對電腦斷層的使用量也同步上升，等待檢查的病人如果沒有依據嚴重程度來安排優先順序的話，可能會耽誤到真正危急病人的檢查時間，影響後續的治療與生命安全。
本研究導入檢傷分類的概念來設計急診電腦斷層檢查排程系統，研究對象為南部某區域教學醫院內的急診護理師與影像醫學科醫事放射師。首先透過啟發式評估法對模擬排檢系統進行改良與優化，後續再使用系統易用性量表搭配實際訪談法，評估此排檢系統是否符合可用性原則。
研究結果顯示，系統易用性量表護理師群組的的分數為83.5分，醫事放射師群組為88.25分，兩者皆高於平均分數68分，顯示本研究導入檢傷分類概念之電腦斷層排檢系統不管在急診部或是影像醫學科，其使用者在操作上是容易、不需浪費額外心力學習與記憶的。具有檢傷分類的急診電腦斷層排程系統對於真正危急病人的檢查時效是非常有幫助的，本研究的結果能提供各醫院檢查排程系統設計上的參考。

Computed tomography (CT) is a noninvasive and easy-to-administer imaging technique that can be applied to almost any part of the human body. Due to these characteristics, CT is widely used in urgent care scenarios. The number of emergency room visits and CT scans in Taiwan has been increasing. Triage is necessary to ensure CT scans are effectively administered for optimal treatment and safety outcomes.
The present study focuses on nurses and radiologic technologists in the urgent care department of a regional teaching hospital in southern Taiwan. The simulated examination system evaluated was initially optimized using heuristic evaluation. Subsequently, the compliance of the system with usability principles was assessed using the System Usability Scale and interviews.
System Usability Scale scores were 83.5 for the nurse group and 88.25 for the radiologic technologist group, both substantially higher than the mean value of 68. These scores suggest that a CT examination scheduling system incorporating triage in the urgent care or radiology department should be able to be easily operated by users without special effort to learn the system. The emergency CT scheduling system with triage classification considerably enhances the timeliness of examinations for critically ill patients. The findings of this study provide a reference model for other hospitals designing examination scheduling systems.