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Background <p>Robot-assisted stereoelectroencephalography (SEEG) has become increasingly popular worldwide. Robotic arm Cirq (BrainLab, Munich, Germany) is an optional instrument for SEEG. This study aimed to evaluate the accuracy of electrode implantation using Cirq.</p> Methods <p>Data were retrospectively collected from 10 consecutive SEEG cases from July 2022 to August 2024 at our institute. Two cases of simultaneous SEEG and grid implantation via craniotomy were excluded. Eight SEEG cases (37 depth electrodes) were included in this study. We evaluated the accuracy of the electrode placement. The distances between the planned and actual site of entry and the target were measured in the anterior-posterior (Xe, Xt) and cranial-caudal (Ye, Yt) directions. The distance between the planned and the actual target site was measured at the surface depth (Zt). The two-dimensional differences of the entry (De<sub>2</sub>) and target (Dt<sub>2</sub>) and the three-dimensional differences, including the depth parameter of the target (Dt), were measured. The two-dimensional and three-dimensional Euclidean distances (ED<sub>2</sub>, ED) were also calculated.</p> Results <p>The differences between the planned entry and the actual entry in Xe and Ye were 2.5 ± 1.6 mm and -0.6 ± 1.8 mm, respectively. De<sub>2</sub> was 3.2 ± 1.4 mm. The differences between the planned target and the actual target in Xt, Yt, and Zt were 2.1 ± 1.5 mm, 0.5 ± 1.5 mm, and 1.4 ± 2.9 mm, respectively. Dt<sub>2</sub> and Dt were 2.7 ± 1.4 mm and 4.1 ± 1.7 mm, respectively. ED<sub>2</sub> and ED were 1.8 ± 1.1 mm and 3.4 ± 1.8 mm, respectively.</p> Conclusions <p>We reported our initial experience with a high accuracy and features of the Cirq robotic arm for SEEG procedures using the standard surface matching method.</p>

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Clinical experiences and accuracy of stereoelectroencephalography using the robotic arm Cirq

  • 期刊论文

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  • 发表日期：

    2025年4月29日

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  • Kohei Kanaya,
  • Asuka Nakamura,
  • Daishiro Abe,
  • Yutaro Sato,
  • Mana Wakabayashi,
  • Tomoya Shigehara,
  • Daichi Watanabe,
  • Yuki Yoshizawa,
  • Tetsuhiro Fukuyama,
  • Tetsuyoshi Horiuchi

摘要

Background

Robot-assisted stereoelectroencephalography (SEEG) has become increasingly popular worldwide. Robotic arm Cirq (BrainLab, Munich, Germany) is an optional instrument for SEEG. This study aimed to evaluate the accuracy of electrode implantation using Cirq.

Methods

Data were retrospectively collected from 10 consecutive SEEG cases from July 2022 to August 2024 at our institute. Two cases of simultaneous SEEG and grid implantation via craniotomy were excluded. Eight SEEG cases (37 depth electrodes) were included in this study. We evaluated the accuracy of the electrode placement. The distances between the planned and actual site of entry and the target were measured in the anterior-posterior (Xe, Xt) and cranial-caudal (Ye, Yt) directions. The distance between the planned and the actual target site was measured at the surface depth (Zt). The two-dimensional differences of the entry (De2) and target (Dt2) and the three-dimensional differences, including the depth parameter of the target (Dt), were measured. The two-dimensional and three-dimensional Euclidean distances (ED2, ED) were also calculated.

Results

The differences between the planned entry and the actual entry in Xe and Ye were 2.5 ± 1.6 mm and -0.6 ± 1.8 mm, respectively. De2 was 3.2 ± 1.4 mm. The differences between the planned target and the actual target in Xt, Yt, and Zt were 2.1 ± 1.5 mm, 0.5 ± 1.5 mm, and 1.4 ± 2.9 mm, respectively. Dt2 and Dt were 2.7 ± 1.4 mm and 4.1 ± 1.7 mm, respectively. ED2 and ED were 1.8 ± 1.1 mm and 3.4 ± 1.8 mm, respectively.

Conclusions

We reported our initial experience with a high accuracy and features of the Cirq robotic arm for SEEG procedures using the standard surface matching method.