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Improving puncture accuracy in percutaneous CT-guided needle insertion with wireless inertial measurement unit: a phantom study

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Abstract

Objectives

A novel method applying inertial measurement units (IMUs) was developed to assist CT-guided puncture, which enables real-time displays of planned and actual needle trajectories. The method was compared with freehand and laser protractor–assisted methods.

Methods

The phantom study was performed by three operators with 8, 2, and 0 years of experience in CT-guided procedure conducted five consecutive needle placements for three target groups using three methods (freehand, laser protractor–assisted, or IMU-assisted method). The endpoints included mediolateral angle error and caudocranial angle error of the first pass, the procedure time, the total number of needle passes, and the radiation dose.

Results

There was a significant difference in the number of needle passes (IMU 1.2 ± 0.42, laser protractor 2.9 ± 1.6, freehand 3.6 ± 2.0 time, p < 0.001), the procedure time (IMU 3.0 ± 1.2, laser protractor 6.4 ± 2.9, freehand 6.2 ± 3.1 min, p < 0.001), the mediolateral angle error of the first pass (IMU 1.4 ± 1.2, laser protractor 1.6 ± 1.3, freehand 3.7 ± 2.5 degree, p < 0.001), the caudocranial angle error of the first pass (IMU 1.2 ± 1.2, laser protractor 5.3 ± 4.7, freehand 3.9 ± 3.1 degree, p < 0.001), and the radiation dose (IMU 250.5 ± 74.1, laser protractor 484.6 ± 260.2, freehand 561.4 ± 339.8 mGy-cm, p < 0.001) among three CT-guided needle insertion methods.

Conclusion

The wireless IMU improves the angle accuracy and speed of CT-guided needle punctures as compared with laser protractor guidance and freehand techniques.

Key Points

• The IMU-assisted method showed a significant decrease in the number of needle passes (IMU 1.2 ± 0.42, laser protractor 2.9 ± 1.6, freehand 3.6 ± 2.0 time, p < 0.001).

• The IMU-assisted method showed a significant decrease in the procedure time (IMU 3.0 ± 1.2, laser protractor 6.4 ± 2.9, freehand 6.2 ± 3.1 min, p < 0.001).

• The IMU-assisted method showed a significant decrease in the mediolateral angle error of the first pass and the caudocranial angle error of the first pass.

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Abbreviations

CT:

Computed tomography

DICOM:

Digital Imaging and Communications in Medicine

EM:

Electromagnetic

EO:

Ethylene oxide

GPS:

Global positioning system

GUI:

Graphical user interface

IMU:

Inertial measurement unit

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Funding

This work was supported by the National Cheng Kung University Hospital of Taiwan (NCKUH-11201007 and NCKUH-11203049) and the Ministry of Science and Technology of Taiwan (MOST 111-2314-B-006-106).

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Authors and Affiliations

  1. Department of Medical Imaging, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan

    Chia-Ying Lin, Po-Chang Chiang, Pei-Yi Tseng & Yi-Sheng Liu

  2. Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan

    Wen-Ruei Tang, Chao-Chun Chang & Yau-Lin Tseng

  3. Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan

    Jenn-Jier James Lien

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  1. Chia-Ying Lin
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Correspondence to Chao-Chun Chang.

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The scientific guarantor of this publication is Chao-Chun Chang.

Conflict of interest

The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.

Statistics and biometry

No complex statistical methods were necessary for this paper.

Informed consent

Written informed consent was not required for this study because our study is a phantom study.

Ethical approval

Institutional Review Board approval was not required because our study is a phantom study.

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Lin, CY., Tang, WR., Chiang, PC. et al. Improving puncture accuracy in percutaneous CT-guided needle insertion with wireless inertial measurement unit: a phantom study. Eur Radiol 33, 3156–3164 (2023). https://doi.org/10.1007/s00330-023-09467-6

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  • DOI: https://doi.org/10.1007/s00330-023-09467-6

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