Multimodal augmented reality system for surgical microscopy

Garcia Giraldez, Jaime; Talib, Haydar; Caversaccio, Marco; Gonzalez Ballester, Miguel A (2006). Multimodal augmented reality system for surgical microscopy. In: Cleary, Kevin R; Galloway, Robert L (eds.) Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display. SPIE Proceedings (61411S). The International Society for Optical Engineering 10.1117/12.651267

Image-guided, computer-assisted neurosurgery has emerged to improve localization and targeting, to provide a better anatomic definition of the surgical field, and to decrease invasiveness. Usually, in image-guided surgery, a computer displays the surgical field in a CT/MR environment, using axial, coronal or sagittal views, or even a 3D representation of the patient. Such a system forces the surgeon to look away from the surgical scene to the computer screen. Moreover, this kind of information, being pre-operative imaging, can not be modified during the operation, so it remains valid for guidance in the first stage of the surgical procedure, and mainly for rigid structures like bones. In order to solve the two constraints mentioned before, we are developing an ultrasoundguided surgical microscope. Such a system takes the advantage that surgical microscopy and ultrasound systems are already used in neurosurgery, so it does not add more complexity to the surgical procedure. We have integrated an optical tracking device in the microscope and an augmented reality overlay system with which we avoid the need to look away from the scene, providing correctly aligned surgical images with sub-millimeter accuracy. In addition to the standard CT and 3D views, we are able to track an ultrasound probe, and using a previous calibration and registration of the imaging, the image obtained is correctly projected to the overlay system, so the surgeon can always localize the target and verify the effects of the intervention. Several tests of the system have been already performed to evaluate the accuracy, and clinical experiments are currently in progress in order to validate the clinical usefulness of the system.

Item Type:

Conference or Workshop Item (Poster)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT)

UniBE Contributor:

Garcia, Jaime; Talib, Haydar; Caversaccio, Marco and Gonzalez Ballester, Miguel Angel

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

1996-756X

Series:

SPIE Proceedings

Publisher:

The International Society for Optical Engineering

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:51

Last Modified:

26 Jun 2016 01:40

Publisher DOI:

10.1117/12.651267

Web of Science ID:

000237688300058

Uncontrolled Keywords:

Augmented reality ; Microscopy ; Computing systems ; Displays ; Microscopes ; Ultrasonography ; Optical tracking ; Image-guided intervention ; Bone ; Calibration

URI:

https://boris.unibe.ch/id/eprint/21778 (FactScience: 14666)

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