<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Matthias Färber</style></author><author><style face="normal" font="default" size="100%">Thorsten Dahmke</style></author><author><style face="normal" font="default" size="100%">Christian-Arved Bohn</style></author><author><style face="normal" font="default" size="100%">Heinz Handels</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Needle Bending in a VR-Puncture Training System Using a 6DOF Haptic Device</style></title><secondary-title><style face="normal" font="default" size="100%">MMVR17</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Studies in health technology and informatics</style></tertiary-title><alt-title><style face="normal" font="default" size="100%">Stud Health Technol Inform</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Biopsy, Needle</style></keyword><keyword><style  face="normal" font="default" size="100%">Computer Simulation</style></keyword><keyword><style  face="normal" font="default" size="100%">Education, Medical</style></keyword><keyword><style  face="normal" font="default" size="100%">Feedback</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Imaging, Three-Dimensional</style></keyword><keyword><style  face="normal" font="default" size="100%">Touch</style></keyword><keyword><style  face="normal" font="default" size="100%">User-Computer Interface</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2009</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Long Beach, USA</style></pub-location><volume><style face="normal" font="default" size="100%">142</style></volume><pages><style face="normal" font="default" size="100%">91-3</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The use of virtual reality techniques opens up new perspectives to support and improve the puncture training in medical education. In this work a 3D VR-Simulator for the training of lumbar and ascites punctures has been extended to support the bending of the puncture needle. For this purpose the needle is designed as an angular spring model. The forces that restrict the user from bending the needle are calculated using a multiproxy technique and given to the user via a 6DOF haptic device (Sensable Phantom Premium 1.5). Proxy based haptic volume rendering is used to calculate the proxy movement. This way it is possible to integrate original CT-patient data into the rendering process and generate forces from structures that have not been segmented. The bending technique has been integrated in a VR-training system for puncture interventions and shows good results concerning update rate and user acceptance.</style></abstract><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/19377121?dopt=Abstract</style></custom1></record></records></xml>