摘要

OBJECTIVES:The aim of this study was to assess feasibility and accuracy of augmented reality-guided lumbar facet joint injections.
MATERIALS AND METHODS:A spine phantom completely embedded in hardened opaque agar with 3 ring markers was built. A 3-dimensional model of the phantom was uploaded to an augmented reality headset (Microsoft HoloLens). Two radiologists independently performed 20 augmented reality-guided and 20 computed tomography (CT)-guided facet joint injections each: for each augmented reality-guided injection, the hologram was manually aligned with the phantom container using the ring markers. The radiologists targeted the virtual facet joint and tried to place the needle tip in the holographic joint space. Computed tomography was performed after each needle placement to document final needle tip position. Time needed from grabbing the needle to final needle placement was measured for each simulated injection. An independent radiologist rated images of all needle placements in a randomized order blinded to modality (augmented reality vs CT) and performer as perfect, acceptable, incorrect, or unsafe. Accuracy and time to place needles were compared between augmented reality-guided and CT-guided facet joint injections.
RESULTS:In total, 39/40 (97.5%) of augmented reality-guided needle placements were either perfect or acceptable compared with 40/40 (100%) CT-guided needle placements (P = 0.5). One augmented reality-guided injection missed the facet joint space by 2 mm. No unsafe needle placements occurred. Time to final needle placement was substantially faster with augmented reality guidance (mean 14 ± 6 seconds vs 39 ± 15 seconds, P < 0.001 for both readers).
CONCLUSIONS:Augmented reality-guided facet joint injections are feasible and accurate without potentially harmful needle placement in an experimental setting.

译文

目的: 本研究的目的是评估增强现实引导的腰椎小关节注射的可行性和准确性。
材料和方法: 构建了一个完全嵌入硬化不透明琼脂中的带有 3 个环状标记的脊柱模体。幻影的三维模型被上传到增强现实耳机 (微软全息眼镜)。两名放射科医生分别独立进行了 20 次增强现实引导下的和 20 次计算机断层扫描 (CT) 引导下的小关节注射: 对于每次增强现实引导下的注射, 全息图使用环形标记手动与幻像容器对齐。放射科医生瞄准了虚拟小关节,并试图将针尖放在全息关节空间。每次进针后进行计算机断层扫描,以记录最终针尖位置。测量了每次模拟注射从抓针到最终针头放置所需的时间。一位独立的放射科医生以随机顺序对所有针头位置的图像进行评级,对形态 (增强现实 vs CT) 和执行者视而不见,认为它们是完美的、可接受的、不正确的或不安全的。比较增强现实引导和 CT 引导下小关节注射的准确性和放置针的时间。
结果: 与 39/40 (97.5%) 的 CT 引导针放置相比,总共有 40/40 (100%) 的增强现实引导针放置是完美的或可接受的 (P = 0.5)。一次增强现实引导的注射错过了 2毫米的小关节间隙。没有发生不安全的针头放置。在增强现实指导下,最终进针的时间大大加快 (平均 14 ± 6 秒对 39 ± 15 秒,两个读者 P <0.001)。
结论: 在实验环境中,增强现实引导的小关节注射是可行和准确的,没有潜在的有害针头放置。

Facet Joint

骨科 平面关节 解剖学/生理学
概述  :  

由相邻椎骨成对上下关节突之关节面构成的关节,属平面关节。成对的上下关节突自椎弓根和椎弓板连接处。上关节突向上突出,具有向后的关节面。下关节突向下突出,其关节面向前。在不同水平,关节面也可向内侧或外侧倾斜,相邻椎骨的关节突即形成小滑膜性的关节突关节。这些关节只允许椎骨间作轻微滑动,但在不同水平的椎骨活动度明显不同。   关节突关节的功能解剖 关节突关节又称小关节,在颈椎也称Luschka关节,在胸椎和腰椎的关节突关节又称为后关节。其位

facet 英 [ˈfæsɪt]  美 [ˈfæsɪt]

释    义   n. 面;方面;小平面

vt. 在…上琢面

过去式 faceted或-etted 过去分词 faceted或-etted 现在分词 faceting或facetting

同根词   n. 面;方面;小平面 aspect, side, respect

例    句   To help you reflect, I’d share some questions you can ask yourself for each facet. 为了帮你回顾,我愿意分享一些你可以就每个方面自己问自己的问题。

 

joint 英 [dʒɔɪnt]  美 [dʒɔɪnt]

释    义   adj. 联合的,合办的;共同拥有的;连带的;连接的

n. 关节;接缝;接合处,接合点;(牛,羊等的腿)大块肉;(非正式)娱乐场所;(非正式)大麻烟卷;(电影或音乐的)创意作品

v. 连接,贴合,接合;使有接头;把(动物)切成大块肉

n. (Joint) (美)茹安(人名)

复数 joints 过去式 jointed 过去分词 jointed 现在分词 jointsing 第三人称单数 joints

同根词   joint

adj. jointed 有接缝的;有节的,有关节的

adv. jointly 共同地;连带地

n. joining 连接;接缝;连接物 joiner 接合者;工匠 jointer 接洽人;接合物;刨接缝的长刨jointure 寡妇所得遗产;(丈夫生前指定的)由妻子继承的遗产;连接

v. jointed 连接,贴合(joint的过去式和过去分词形式)

vt. jointure 给…指定寡妇授予产

例    句   Before we discuss the joint practices, let me be clear about what the practices are and are not. 在我们讨论联合实践之前,让我先澄清什么是实践,以及什么不是实践。

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