Projektorbasierte Erweiterte Realität in der Chirurgie

Hoppe, Harald; Däuber, Sascha; Raczkowsky, Jörg; Wörn, Heinz; Moctezuma, José Luis

doi:10.1007/978-3-642-56714-8_6

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Such methods are usually applied for using multiple projectors in the context of immersive displays [5]. In the clinical field, projectors have been proposed for displaying general information in the surgeon's field of view [6], and have already been used for navigation tasks in maxillofacial surgery [7]. While these methods work well for the described applications, they cannot directly be employed at the open heart.…”

Section: Methodsmentioning

confidence: 99%

Towards Projector-Based Visualization for Computer-Assisted CABG at the Open Heart

Hartung

Gnahm

Sailer

et al. 2009

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Abstract. Computer-assistance in coronary artery bypass grafting at the open heart with intraoperative navigation enables accurate placement of a bypass graft to a preoperatively planned anastomosis site. So far, navigation information were displayed on a monitor, requiring the operating surgeon to change focus from the monitor to the surgical site and vice versa during the navigation process. In this work, a mechanism is presented which is intended to enable the projection of registered preprocedural information directly onto the surface of the open heart. The method was tested on a heart phantom yielding good results.

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Section: Methodsmentioning

confidence: 99%

Towards Projector-Based Visualization for Computer-Assisted CABG at the Open Heart

Hartung

Gnahm

Sailer

et al. 2009

Bildverarbeitung Für Die Medizin 2009

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“…Such a system can provide minimal information with maximum relevance to the surgeon directly in the anatomy: access path, hit / miss of the target. Similar approaches are known, the ARSys Tricorder [4], or the Probaris system [5], none of which have found widespread use in daily surgical routine, presumably due to the additional constraints introduced to surgical workflow (e.g., eye calibration or wearing AR glasses intraoperatively). When considering attention shift [6,7] and depth-perception [8], Spatial AR systems have an advantage over conventional displays or seethrough AR systems [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

CIGuide: in situ augmented reality laser guidance

et al. 2019

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Purpose A robotic intraoperative laser guidance system with hybrid optic-magnetic tracking for skull base surgery is presented. It provides in situ augmented reality guidance for microscopic interventions at the lateral skull base with minimal mental and workload overhead on surgeons working without a monitor and dedicated pointing tools. Methods Three components were developed: a registration tool (Rhinospider), a hybrid magneto-optic-tracked robotic feedback control scheme and a modified robotic end-effector. Rhinospider optimizes registration of patient and preoperative CT data by excluding user errors in fiducial localization with magnetic tracking. The hybrid controller uses an integrated microscope HD camera for robotic control with a guidance beam shining on a dual plate setup avoiding magnetic field distortions. A robotic needle insertion platform (iSYS Medizintechnik GmbH, Austria) was modified to position a laser beam with high precision in a surgical scene compatible to microscopic surgery. Results System accuracy was evaluated quantitatively at various target positions on a phantom. The accuracy found is 1.2 mm ± 0.5 mm. Errors are primarily due to magnetic tracking. This application accuracy seems suitable for most surgical procedures in the lateral skull base. The system was evaluated quantitatively during a mastoidectomy of an anatomic head specimen and was judged useful by the surgeon. Conclusion A hybrid robotic laser guidance system with direct visual feedback is proposed for navigated drilling and intraoperative structure localization. The system provides visual cues directly on/in the patient anatomy, reducing the standard limitations of AR visualizations like depth perception. The custom- built end-effector for the iSYS robot is transparent to using surgical microscopes and compatible with magnetic tracking. The cadaver experiment showed that guidance was accurate and that the end-effector is unobtrusive. This laser guidance has potential to aid the surgeon in finding the optimal mastoidectomy trajectory in more difficult interventions.

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“…Eine systematische und separate Evaluierung sowohl der Patientenregistrierung als auch der Projektion von Planungsdaten wurde bereits an anderer Stelle beschrieben [7,12].…”

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