Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Hospital, Washington, DC, USA; Department of Surgery, MedStar Georgetown University Hospital and Washington Hospital Center, Washington, DC, USA.
IGI Technologies, Silver Spring, MD, USA.
Ultrasound Med Biol. 2023 Nov;49(11):2346-2353. doi: 10.1016/j.ultrasmedbio.2023.07.011. Epub 2023 Aug 11.
Augmented reality devices are increasingly accepted in health care, though most applications involve education and pre-operative planning. A novel augmented reality ultrasound application, HoloUS, was developed for the Microsoft HoloLens 2 to project real-time ultrasound images directly into the user's field of view. In this work, we assessed the effect of using HoloUS on vascular access procedural outcomes.
A single-center user study was completed with participants with (N = 22) and without (N = 12) experience performing ultrasound-guided vascular access. Users completed a venipuncture and aspiration task a total of four times: three times on study day 1, and once on study day 2 between 2 and 4 weeks later. Users were randomized to use conventional ultrasound during either their first or second task and the HoloUS application at all other times. Task completion time, numbers of needle re-directions, head adjustments and needle visualization rates were recorded.
For expert users, task completion time was significantly faster using HoloUS (11.5 s, interquartile range [IQR] = 6.5-23.5 s vs. 18.5 s, IQR = 11.0-36.5 s; p = 0.04). The number of head adjustments was significantly lower using the HoloUS app (1.0, IQR = 0.0-1.0 vs. 3.0, IQR = 1.0-5.0; p < 0.0001). No significant differences were identified in other measured outcomes.
This is the first investigation of augmented reality-based ultrasound-guided vascular access using the second-generation HoloLens. It demonstrates equivalent procedural efficiency and accuracy, with favorable usability, ergonomics and user independence when compared with traditional ultrasound techniques.
增强现实设备在医疗保健领域越来越受欢迎，尽管大多数应用涉及教育和术前规划。一种新的增强现实超声应用程序 HoloUS 已为 Microsoft HoloLens 2 开发，用于将实时超声图像直接投射到用户的视野中。在这项工作中，我们评估了使用 HoloUS 对血管通路程序结果的影响。
在有（N=22）和没有（N=12）超声引导血管通路经验的参与者中完成了一项单中心用户研究。用户总共完成了四次静脉穿刺和抽吸任务：在研究日 1 进行三次，在研究日 2 之后的 2 至 4 周之间进行一次。用户被随机分配在第一次或第二次任务中使用传统超声，而在其他所有时间使用 HoloUS 应用程序。记录任务完成时间、针重新定向次数、头部调整次数和针可视化率。
对于专家用户，使用 HoloUS 时任务完成时间明显更快（11.5 秒，四分位距 [IQR] = 6.5-23.5 秒与 18.5 秒，IQR = 11.0-36.5 秒；p=0.04）。使用 HoloUS 应用程序时，头部调整次数明显减少（1.0，IQR = 0.0-1.0 与 3.0，IQR = 1.0-5.0；p<0.0001）。在其他测量结果中没有发现显著差异。
这是首次使用第二代 HoloLens 对基于增强现实的超声引导血管通路进行的调查。与传统超声技术相比，它证明了在程序效率和准确性方面等效，具有良好的可用性、人体工程学和用户独立性。
