Stereotactic accuracy and frame mounting: A phantom study.
Stereotactic accuracy and frame mounting: A phantom study.
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DOI：
10.25259/sni-88-2019
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发表时间：
2019-01-01
影响因子：
--
通讯作者：
Temel, Yasin
中科院分区：
文献类型：
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作者：
Alptekin, Onur;Gubler, Felix S;Temel, Yasin
背景：支架安装被认为是立体定向神经外科手术中最关键的步骤之一。在常规临床实践中，目的是尽可能对称地安装支架，平行于Reid线。然而，有时，框架安装不对称往往是由于患者相关的reasons.METHODS：在这项研究中，我们解决了这个问题，是否不对称安装的框架影响立体定向电极植入的准确性。西瓜用于本研究。在磁共振成像扫描后，使用计算机断层扫描（CT）对临床情况下可能发生的瓣架进行对称和非对称安装。使用三种不同的立体定向软件包来分析结果。此外，手动计算进行了两个不同的observers.RESULTS：我们的研究结果表明，一个不对称安装的框架（偏离，倾斜，或旋转）不影响准确性在mediolateral轴（X坐标）或前后轴（Y坐标）。然而，它可能导致上下轴（Z坐标）的临床相关误差。结论：这些结果表明，不对称的框架安装可以导致立体定向不准确的上下轴（Z坐标）。
BACKGROUND: Frame mounting is considered one of the most critical steps in stereotactic neurosurgery. In routine clinical practice, the aim is to mount the frame as symmetrical as possible, parallel to Reid's line. However, sometimes, the frame is mounted asymmetrically often due to patient-related reasons.METHODS: In this study, we addressed the question whether an asymmetrically mounted frame influences the accuracy of stereotactic electrode implantation. A Citrullus lanatus was used for this study. After a magnetic resonance imaging scan, symmetric and asymmetric mounting of the frame, which could occur in clinical scenarios, was performed with computed tomography (CT). Three different stereotactic software packages were used to analyze the results. In addition, manual calculations were performed by two different observers.RESULTS: Our results show that an asymmetrically mounted frame (deviated, tilted, or rotated) does not affect the accuracy in the mediolateral axis (X-coordinate) or the anteroposterior axis (Y-coordinate). However, it can lead to a clinically relevant error in the superoinferior axis (Z-coordinate). This error was largest with manual calculations.CONCLUSION: These results suggest that asymmetrical frame mounting can lead to stereotactic inaccuracy in the superoinferior axis (Z coordinate).