Medical Applications – Visual Computing Lab

Educational Augmented Reality Prototype

Brian Bunch Christensen — Tue, 17 Dec 2013 12:27:18 +0000

In collaboration with VIA University College, we’ve recently completed a quick prototype of an educational iPad app for hospital nurses. It is an augmented reality app (built in Unity) which overlays a t-shirt logo with a pair of lungs that undergo a respiratory cyclus. The lungs are placed as though they are actually inside the person wearing the t-shirt.

First ultrasound images presented

Thomas Kim Kjeldsen — Tue, 03 Dec 2013 15:59:40 +0000

We have successfully demonstrated the first ultrasound images in our Advanced Technology Foundation project. The demonstration was presented today at an event at the Center for Fast Ultrasound Imaging at the Technical University of Denmark.

The picture shows images acquired and processed in real time using our newly developed software (left) and the corresponding raw image produced by a commercially available scanner from BK Medical (right). We will continue working on improving the image quality. Details about our software implementation will be published in a future post.

Oculus Rift finally arrived

Jesper Mosegaard — Thu, 06 Jun 2013 08:11:06 +0000

Even though we had to wait a very long time to get our hands on the newest VR technology, it didn’t let us down when it arrived! Putting on the helmet is like stepping into the world.

The vision and sensory systems work together in great harmony letting you naturally move around in the world. Let us know, at jesper.mosegaard@alexandra.dk, if you want a demo and talk about custom virtual reality applications

The picture shows Brian testing out the equipment.

Molecular Visualization using OpenGL / GLSL

Jesper Mosegaard — Wed, 12 Sep 2012 08:55:49 +0000

This video demonstrates our real-time molecular visualization application written using OpenGL and GLSL. The video features three distinct visualizations: Stick-and-ball, Connolly surface and density plot. The application renders the molecule using image-based lighting combined with depth-of-field. Ambient occlusion and fog is further used to enhance the perception of depth. The Connolly surface can be dynamically recreated when changing the orbital or probe radius. When recreating the Connolly surface the ambient occlusion is dynamically updated. The density plot, which features five separate density fields, is composited onto the rasterized geometry using raymarching.

The application is part of a presentation which will be given at Symposium on Scientific Visualization held on September 25th – 26th, 2012 at The Royal Danish Academy of Sciences and Letters in Copenhagen.

Real-time volume rendering sandbox using GLSL

Jesper Mosegaard — Mon, 18 Jun 2012 10:17:39 +0000

As part of an ongoing research project we decided to see how far we could push real-time volume rendering using only GLSL shaders. The video shown here demonstrates some of the supported features such as:

Multiple iso-surface shading
Density plotting
Arbitrary oriented contour planes
Arbitrary oriented cutting plane

The shown video is running on an explicit dataset 256^3 4x16bit floating data on a Nvidia GTX470 graphics card.

[vimeo]http://vimeo.com/44234825[/vimeo]

Fun with oriented particles (do knot try this at home).

Karsten Østergaard Noe — Tue, 15 May 2012 08:41:46 +0000

Hi everybody,

Recently we have spent some more time on real-time physics simulation.

One of the things we have been working on can be seen in this video of a real-time volumetric simulation of an elastic torus knot.

The simulation was realized using the ‘oriented particles’ approach to shape matching developed by Matthias Müller and Nuttapong Chentanez.

The implementation will be used in the next version of the Visible Ear Simulator ( ves.cg.alexandra.dk ).

New version of our free Visible Ear Drilling Simulator released.

Peter Trier Mikkelsen — Thu, 29 Sep 2011 12:00:25 +0000

We are proud to present a new release of our freeware surgical drilling simulator. That uses advanced volume ray casting and haptic force feedback to simulate a realistic drilling procedure in the temporal bone. This version has a complete drilling tutorial that guides the user through a whole masteodectomi.

Notice the light green coloured bone structures, this indicates where the surgeon should drill. And the dark green coloured is used to display the bone that should have been drilled away in the previous steps.

More info can be found here http://ves.cg.alexandra.dk/

Cardiac Surgery Simulator

Jesper Mosegaard — Wed, 06 May 2009 14:01:01 +0000

Onco visible man presentation.

Peter Trier Mikkelsen — Mon, 04 May 2009 13:36:04 +0000

Today we presented the Onco visible man for the first time, at a workshop at Aarhus University hospital. The prototype features a real time stereo visualization of the “visible human” dataset. And the user is able to navigate, select and remove all the different segments of anatomy.

Visible Ear Simulator website

Peter Trier Mikkelsen — Fri, 01 May 2009 07:52:12 +0000

Visible Ear Simulator – drilling

The Visible Ear Simulator website is available. Download of the free-ware version will be available soon: http://www.alexandra.dk/ves/