Simulation of ultrasound guided needle puncture using patient specific data with 3D textures and volume haptics

Authors:
F. P. Vidal;N. W. John;A. E. Healey;D. A. Gould
Affiliations:
-;(Correspd.) School of Computer Science, University of Wales, Bangor, UK.;-;-
Venue:
Computer Animation and Virtual Worlds
Year:
2008

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Abstract

We present an integrated system for training ultrasound (US) guided needle puncture. Our aim is to provide a validated training tool for interventional radiology (IR) that uses actual patient data. IR procedures are highly reliant on the sense of touch and so haptic hardware is an important part of our solution. A hybrid surface-volume haptic rendering of an US transducer is proposed to constrain the device to remain outside the bony structures when scanning the patient's skin. A volume haptic model is proposed that implements an effective model of needle puncture. Force measurements have been made on real tissue and the resulting data is incorporated into the model. The other input data required is a computed tomography (CT) scan of the patient that is used to create the patient specific models. It is also the data source for a novel simulation of a virtual US scanner, which is used to guide the needle to the correct location. Copyright © 2007 John Wiley & Sons, Ltd.