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International Journal of Computer Assisted Radiology and Surgery

Erschienen in:

01.06.2016 | Original Article

Intraoperative application of hand-held structured light scanning: a feasibility study

verfasst von: Brandon Chan, Jason Auyeung, John F. Rudan, Randy E. Ellis, Manuela Kunz

Erschienen in: International Journal of Computer Assisted Radiology and Surgery | Ausgabe 6/2016

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Abstract

Purpose

Structured light scanning is an emerging technology that shows potential in the field of medical imaging and image-guided surgery. The purpose of this study was to investigate the feasibility of applying a hand-held structured light scanner in the operating theatre as an intraoperative image modality and registration tool.

Methods

We performed an in vitro study with three fresh frozen knee specimens and a clinical pilot study with three patients (one total knee arthroplasty and two hip replacements). Before the procedure, a CT scan of the affected joint was obtained and isosurface models of the anatomies were created. A conventional surgical exposure was performed, and a hand-held structured light scanner (Artec Group, Palo Alto, USA) was used to scan the exposed anatomy. Using the texture information of the scanned model, bony anatomy was selected and registered to the CT models. Registration RMS errors were documented, and distance maps between the scanned model and the CT model were created.

Results

For the in vitro trial, the average RMS error was 1.00 mm for the femur and 1.17 mm for the tibia registration. We found comparable results during clinical trials, with an average RMS error of 1.3 mm.

Conclusions

The results of this preliminary study indicate that structured light scanning could be applied accurately and safely in a surgical environment. This could result in a variety of applications for these scanners in image-guided interventions as intraoperative imaging and registration tools.

Vorheriger Artikel Spatial calibration of a 2D/3D ultrasound using a tracked needle

Nächster Artikel Combined 2D and 3D tracking of surgical instruments for minimally invasive and robotic-assisted surgery

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Post-processing was performed using a quad core processor with 16 GB RAM.

All post-processing included global point registration, outlier removal, sharp fusion, and texture mapping was performed using a quad core processor with 16 GB RAM.

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Titel: Intraoperative application of hand-held structured light scanning: a feasibility study
verfasst von: Brandon Chan
Jason Auyeung
John F. Rudan
Randy E. Ellis
Manuela Kunz
Publikationsdatum: 01.06.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: International Journal of Computer Assisted Radiology and Surgery / Ausgabe 6/2016
Print ISSN: 1861-6410
Elektronische ISSN: 1861-6429
DOI: https://doi.org/10.1007/s11548-016-1381-8

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Abstract

Purpose

Methods

Results

Conclusions

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