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Image-guided surgical navigation is on the rise in many different areas of modern medicine and is already an established standard in some disciplines like ear nose and throat (ENT) or maxillofacial surgery. When evaluating surgical navigation systems the absolute accuracy of the device is of major concern to the surgeon. The following work presents two different ways of measuring the accuracy of surgical...
This paper describes a method for measuring the shape accuracy of a cylindrical hole which is created by means of an automatically power-controlled laser system using navigated control. In dental surgery, drills or mills are used for bone treatment. For most patients the use of these instruments is very inconvenient. Furthermore, the bone treatment with rotating instruments can lead to thermal necrosis...
In this article a new navigated drill system for computer assisted ear, nose and throat (ENT) surgery is presented. The navigated drill and the microscope probe are part of a surgical navigation system for ENT-surgery. In particular, the accuracy of the new navigated drill is compared to an existing navigated drill experimentally under conditions close to the surgical workflow. For the technical accuracy...
In this article we present a new algorithm implemented on a microcontroller for the classification of human physical activity based on a triaxial accelerometer. In terms of long term monitoring of activity patterns, it is important to keep the amount of data as small as possible and to use efficient data processing. Hence the aim of this work was to provide an algorithm that classifies the activities...
Surgical navigation systems are used widely among all fields of modern medicine, including, but not limited to ENT- and maxillofacial surgery. As a fundamental prerequisite for image-guided surgery, intraoperative registration, which maps image to patient coordinates, has been subject to many studies and developments. While registration methods have evolved from invasive procedures like fixed stereotactic...
In this article, a technical study of a new assistance system to support surgeons in milling on the temporal bone is presented. In particular, the overall accuracy of a new assistance system was investigated experimentally under conditions close to surgical practice. For the experiment, the assistance system has been used with its associated navigation system for ear-nose-throat (ENT) surgery. A specially...
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