Toyoda Shohei, Kameda Arisa, Fukuoka Yasushi, Takada Hiroyuki, Tsukada Kentaro, Nakamura Atsuyoshi, Inoue Takeshi, Matsumoto Takeshi, Taiji Ryosuke, Minamiguchi Kiyoyuki, Nishiofuku Hideyuki, Tanaka Toshihiro
Diagnostic and Interventional Radiology, Nara Medical University, Japan.
Miyano Medical Instruments Co., Ltd., Japan.
Interv Radiol (Higashimatsuyama). 2025 Aug 1;10:e20250004. doi: 10.22575/interventionalradiology.2025-0004. eCollection 2025.
A newly developed device, the Partially Automated Needle Direction Assistant, was designed to assist with computed tomography-guided oblique needle puncture. This device allows operators to accurately and in real-time determine the puncture angle based on the target lesion and needle entry point. The purpose of this report is to introduce the concept of Partially Automated Needle Direction Assistant and present results from an initial phantom study.
Partially Automated Needle Direction Assistant integrates a 9-axis internal measurement unit for angle detection, transmitting real-time orientation data to a tablet application via Wi-Fi. Operators align the needle direction with a displayed guideline. A phantom study was conducted with two operators of differing interventional radiology experience levels (operator A: 1 year; operator B: 4 years) performing needle punctures into embedded targets. Success rates were evaluated based on a scoring system reflecting needle placement accuracy.
Both operators successfully punctured all six sites, achieving a 100% success rate. Center hits were not influenced by target size, puncture direction, or operator experience level. Operator A tended to achieve higher scores than operator B (mean scores: 1.50 vs. 1.17; p = 0.073).
Partially Automated Needle Direction Assistant demonstrated high accuracy and usability in guiding oblique needle punctures, regardless of operator experience. This device has the potential to enhance safety, reduce radiation exposure, and streamline computed tomography-guided interventions.
一种新开发的设备——部分自动化针方向辅助装置，旨在辅助计算机断层扫描引导下的斜针穿刺。该设备使操作人员能够根据目标病变和进针点实时准确地确定穿刺角度。本报告的目的是介绍部分自动化针方向辅助装置的概念，并展示初步体模研究的结果。
部分自动化针方向辅助装置集成了一个用于角度检测的9轴内部测量单元，通过Wi-Fi将实时方向数据传输到平板电脑应用程序。操作人员将针的方向与显示的引导线对齐。对两名具有不同介入放射学经验水平的操作人员（操作人员A：1年；操作人员B：4年）进行体模研究，将针穿刺到嵌入的目标中。根据反映针放置准确性的评分系统评估成功率。
两名操作人员均成功穿刺了所有六个部位，成功率达到100%。中心命中不受目标大小、穿刺方向或操作人员经验水平的影响。操作人员A的得分往往高于操作人员B（平均得分：1.50对1.17；p = 0.073）。
部分自动化针方向辅助装置在引导斜针穿刺方面显示出高准确性和易用性，与操作人员的经验无关。该设备有可能提高安全性、减少辐射暴露并简化计算机断层扫描引导的干预措施。
