Publication

Organ Surface Markerless Tracking

2008
Student Projects

Abstract

Today’s surgical navigation systems are difficult to use for deformable organs. State of the art technology struggles to continuously update and display preoperative information such that it corresponds to the actual position of the organ. An update method is presented in this pro ject that uses pre-operative CT phantom data to extract a virtual organ model and calculate the position of inner landmarks. The virtual model is based on a mass-spring system. Surface data is processed to calculate forces that are applied on the model. The accuracy of the obtained inner landmark positions is verified by tracking navigation aids that are inserted in the phantom organ. Three different mass-spring models are created and compared to each other. Accuracy below 1cm was achieved but the method needs to be further tested with different deformations.

Official source

https://infoscience.epfl.ch/entities/publication/39af9062-21d6-417f-afa4-53c40bec7939

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

2008
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/39af9062-21d6-417f-afa4-53c40bec7939

About this result

Related concepts (31)

Geopositioning

Geopositioning, also known as geotracking, geolocalization, geolocating, geolocation, or geoposition fixing, is the process of determining or estimating the geographic position of an object. Geopositioning yields a set of geographic coordinates (such as latitude and longitude) in a given map datum; positions may also be expressed as a bearing and range from a known landmark. In turn, positions can determine a meaningful location, such as a street address.

Indoor positioning system

An indoor positioning system (IPS) is a network of devices used to locate people or objects where GPS and other satellite technologies lack precision or fail entirely, such as inside multistory buildings, airports, alleys, parking garages, and underground locations. A large variety of techniques and devices are used to provide indoor positioning ranging from reconfigured devices already deployed such as smartphones, WiFi and Bluetooth antennas, digital cameras, and clocks; to purpose built installations with relays and beacons strategically placed throughout a defined space.

Navigation system

A navigation system is a computing system that aids in navigation. Navigation systems may be entirely on board the vehicle or vessel that the system is controlling (for example, on the ship's bridge) or located elsewhere, making use of radio or other signal transmission to control the vehicle or vessel. In some cases, a combination of these methods is used.