Saccenti Laetitia, Varble Nicole, Borde Tabea, Huth Hannah, Kassin Michael, Ukeh Ifechi, Bakhutashvili Ivan, Golbus Ashley, Hazen Lindsey, Xu Sheng, Tacher Vania, Kobeiter Hicham, Horton Keith, Li Ming, Wood Bradford
Center for Interventional Oncology, Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, 10 Center Drive, Bethesda, MD, 20892, USA.
Henri Mondor's Institute of Biomedical Research - Inserm, U955 Team N°18, Creteil, France.
Cardiovasc Intervent Radiol. 2025 Apr 28. doi: 10.1007/s00270-025-04044-4.
This study aimed to describe the workflow and evaluate the accuracy of a novel smartphone augmented reality (AR) application that includes an integrated needle guide, in a phantom.
A smartphone cover with an integrated needle guide was designed and 3D-printed. An AR application for percutaneous application was developed, which integrated a projected needle path based on the rigid needle guide. After planning the needle path using this novel tool, the operator could place the needle through the guide to reach the target. Six lesions with out-of-plane entry points were targeted on an abdominal phantom. Timing and accuracy of needle placements were measured on post-procedural CT both using smartphone AR guidance and with a freehand approach. Results were compared using Wilcoxon rank sum and Pearson's chi-squared tests.
A total of 108 needle placements were performed by 9 physicians with widely varying experience. The median accuracy was 4 mm (IQR 3-6 mm) using the smartphone versus 18 mm (IQR 9-27 mm) for freehand (P < 0.001). Using the smartphone AR application, planning time was 91 s (IQR 71-151 s), and puncture time was 68 s (IQR 57-77 s). There was no difference in accuracy, planning, or puncture times according to experience level when using the AR tool.
This smartphone application with an integrated needle guide allows path planning and accurate needle placement on phantoms with real-time angular feedback in less than 3 min. This technology could promote standardization, reduce experience requirements, or provide accurate low-cost guidance in environments without procedural imaging for percutaneous interventions.
本研究旨在描述一种新型智能手机增强现实（AR）应用程序的工作流程，并评估其在模型中集成针引导器时的准确性。
设计并3D打印了一个带有集成针引导器的智能手机保护套。开发了一种用于经皮应用的AR应用程序，该程序基于刚性针引导器集成了投影针路径。使用这种新型工具规划针路径后，操作员可以通过引导器将针放置到目标位置。在腹部模型上针对六个具有平面外进针点的病变进行操作。在术后CT上测量使用智能手机AR引导和徒手操作时针放置的时间和准确性。使用Wilcoxon秩和检验和Pearson卡方检验比较结果。
9名经验差异很大的医生共进行了108次针放置。使用智能手机时的中位准确性为4毫米（四分位间距3 - 6毫米），而徒手操作时为18毫米（四分位间距9 - 27毫米）（P < 0.001）。使用智能手机AR应用程序时，规划时间为91秒（四分位间距71 - 151秒），穿刺时间为68秒（四分位间距57 - 77秒）。使用AR工具时，根据经验水平，准确性、规划时间或穿刺时间没有差异。
这种带有集成针引导器的智能手机应用程序允许在模型上进行路径规划并准确放置针，在不到3分钟的时间内提供实时角度反馈。这项技术可以促进标准化，降低经验要求，或者在没有用于经皮干预的程序成像的环境中提供准确的低成本引导。
