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13 September 2024 Augmented reality for point-of-care ultrasound-guided vascular access in pediatric patients using Microsoft HoloLens 2: a preliminary evaluation
Gesiren Zhang, Trong N. Nguyen, Hadi Fooladi-Talari, Tyler Salvador, Kia Thomas, Daragh Crowley, R. Scott Dingeman, Raj Shekhar
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Journal of Medical Imaging, Vol. 11, Issue 6, 062604 (September 2024). https://doi.org/10.1117/1.JMI.11.6.062604
Abstract

Significance

Conventional ultrasound-guided vascular access procedures are challenging due to the need for anatomical understanding, precise needle manipulation, and hand–eye coordination. Recently, augmented reality (AR)-based guidance has emerged as an aid to improve procedural efficiency and potential outcomes. However, its application in pediatric vascular access has not been comprehensively evaluated.

Aim

We developed an AR ultrasound application, HoloUS, using the Microsoft HoloLens 2 to display live ultrasound images directly in the proceduralist’s field of view. We presented our evaluation of the effect of using the Microsoft HoloLens 2 for point-of-care ultrasound (POCUS)-guided vascular access in 30 pediatric patients.

Approach

A custom software module was developed on a tablet capable of capturing the moving ultrasound image from any ultrasound machine’s screen. The captured image was compressed and sent to the HoloLens 2 via a hotspot without needing Internet access. On the HoloLens 2, we developed a custom software module to receive, decompress, and display the live ultrasound image. Hand gesture and voice command features were implemented for the user to reposition, resize, and change the gain and the contrast of the image. We evaluated 30 (15 successful control and 12 successful interventional) cases completed in a single-center, prospective, randomized study.

Results

The mean overall rendering latency and the rendering frame rate of the HoloUS application were 139.30 ms (σ=32.02 ms) and 30 frames per second, respectively. The average procedure completion time was 17.3% shorter using AR guidance. The numbers of puncture attempts and needle redirections were similar between the two groups, and the number of head adjustments was minimal in the interventional group.

Conclusion

We presented our evaluation of the results from the first study using the Microsoft HoloLens 2 that investigates AR-based POCUS-guided vascular access in pediatric patients. Our evaluation confirmed clinical feasibility and potential improvement in procedural efficiency.
© 2024 Society of Photo-Optical Instrumentation Engineers (SPIE)
Citation Download Citation
Gesiren Zhang, Trong N. Nguyen, Hadi Fooladi-Talari, Tyler Salvador, Kia Thomas, Daragh Crowley, R. Scott Dingeman, and Raj Shekhar "Augmented reality for point-of-care ultrasound-guided vascular access in pediatric patients using Microsoft HoloLens 2: a preliminary evaluation," Journal of Medical Imaging 11(6), 062604 (13 September 2024). https://doi.org/10.1117/1.JMI.11.6.062604
Received: 12 March 2024; Accepted: 15 August 2024; Published: 13 September 2024
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KEYWORDS
Ultrasonography
Augmented reality
Head
Tablets
Point-of-care devices
Displays
Image processing
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