Intervention planning using a laser navigation system for CT-guided interventions : a phantom and patient study

Objective: To investigate the accuracy, efficiency and radiation dose of a novel laser navigation system (LNS) compared to those of free-handed punctures on computed tomography (CT).
Materials and methods: Sixty punctur
Objective: To investigate the accuracy, efficiency and radiation dose of a novel laser navigation system (LNS) compared to those of free-handed punctures on computed tomography (CT).
Materials and methods: Sixty punctures were performed using a phantom body to compare accuracy, timely effort, and radiation dose of the conventional free-handed procedure to those of the LNS-guided method. An additional 20 LNS-guided interventions were performed on another phantom to confirm accuracy. Ten patients subsequently underwent LNS-guided punctures.
Results: The phantom 1-LNS group showed a target point accuracy of 4.0 ± 2.7 mm (freehand, 6.3 ± 3.6 mm; p = 0.008), entrance point accuracy of 0.8 ± 0.6 mm (freehand, 6.1 ± 4.7 mm), needle angulation accuracy of 1.3 ± 0.9° (freehand, 3.4 ± 3.1°; p < 0.001), intervention time of 7.03 ± 5.18 minutes (freehand, 8.38 ± 4.09 minutes; p = 0.006), and 4.2 ± 3.6 CT images (freehand, 7.9 ± 5.1; p < 0.001). These results show significant improvement in 60 punctures compared to freehand. The phantom 2-LNS group showed a target point accuracy of 3.6 ± 2.5 mm, entrance point accuracy of 1.4 ± 2.0 mm, needle angulation accuracy of 1.0 ± 1.2°, intervention time of 1.44 ± 0.22 minutes, and 3.4 ± 1.7 CT images. The LNS group achieved target point accuracy of 5.0 ± 1.2 mm, entrance point accuracy of 2.0 ± 1.5 mm, needle angulation accuracy of 1.5 ± 0.3°, intervention time of 12.08 ± 3.07 minutes, and used 5.7 ± 1.6 CT-images for the first experience with patients.
Conclusion: Laser navigation system improved accuracy, duration of intervention, and radiation dose of CT-guided interventions.
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Author:Tatjana Gruber-Rouh, Clara Lee, Jan Bolck, Nagy Naguib Naeem Naguib, Boris Schulz, Katrin Eichler, Rene Aschenbach, Julian Wichmann, Thomas J. Vogl, Stephan Zangos
URN:urn:nbn:de:hebis:30:3-373873
DOI:http://dx.doi.org/10.3348/kjr.2015.16.4.729
ISSN:2005-8330
ISSN:1229-6929
Parent Title (English):Korean journal of radiology
Publisher:Taehan-Pangsas°on-Uihakhoe
Place of publication:Seoul
Document Type:Article
Language:English
Date of Publication (online):2015/07/01
Date of first Publication:2015/07/01
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2015/07/28
Tag:CT-guided interventions; First experience with patients; LNS; Laser navigation system; Phantom study
Volume:16
Issue:4
Pagenumber:7
First Page:729
Last Page:735
Note:
Copyright © 2015 The Korean Society of Radiology This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
HeBIS PPN:369732669
Institutes:Medizin
Dewey Decimal Classification:610 Medizin und Gesundheit
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell 3.0

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