Image segmentation methods like active shape models, active appearance models or snakes require an initialisation that guarantees a considerable overlap with the object to be segmented. In this paper we present an approach that localises anatomical structures in a global manner by means ofMarkov Random Fields (MRF). It does not need initialisation, but finds the most plausible match of the quer...

The generation of variable surgical scenes is a key element for effective training with surgery simulators. Our current research aims at a high fidelity hysteroscopy simulator which challenges the trainee with a new surgical scene in every training session. We previously reported on methods able to generate a broad range of pathologies within an existing healthy organ model. This paper presents...

Die elektrophysiologische und elektromechanische Darstellung des Herzens sind die wichtigsten Aspekte bei der mathematischen Modellierung dieses Organs. Vorraussetzung für eine solche Modellierung ist die korrekte Segmentation. Die Segmentation im kardiologischen Bereich gestaltet sich als besonders schwierig, da das Herz eine komplizierte Struktur besitzt, das Bildmaterial meist verrauscht ist...

Accurate delineation of anatomical objects in 3D vol-umetric data is a signiicant problem in medical imaging. We have built a system that takes as input a spatial stack of 2D image slices being studied. The output of the system is a smooth 3D surface delineating the medical structure of interest, and the volume enclosed by the 3D surface. This paper presents a new method to represent a 3D anato...

There is considerable controversy concerning the role of cadaveric dissection in teaching gross anatomy and the potential of using 3D computer-generated images to substitute for actual laboratory dissections. There are currently few high-quality 3D virtual models of anatomy available to evaluate the utility of computer-generated images. Existing 3D models are frequently of structures that are e...

Computational anatomy (CA) is the mathematical study of anatomy I in I = I(alpha) o G, an orbit under groups of diffeomorphisms (i.e., smooth invertible mappings) g in G of anatomical exemplars I(alpha) in I. The observable images are the output of medical imaging devices. There are three components that CA examines: (i) constructions of the anatomical submanifolds, (ii) comparison of the anato...

The position and effect of anatomy have changed greatly over the centuries. Once a scientific empire and a foundation stone of medicine, it declined to a marginal and unattractive discipline. On the other hand, the ways to teach anatomy have become more sophisticated than ever. Over the centuries, classic dissection of a cadaver evolved to virtual dissection and computational anatomy. Despite t...

Advances in computer and interface technologies have made it possible to create three-dimensional (3D) computerized models of anatomical structures for visualization, manipulation, and interaction in a virtual 3D environment. In the past few decades, a multitude of digital models have been developed to facilitate complex spatial learning of the human body. However, there is limited empirical ev...

Rapid prototyping (RP), or stereolithography, is a new clinical application area, which is used to obtain accurate three-dimensional physical replicas of complex anatomical structures. The aim of this study was to create tangible hard copies of the ethmoidal labyrinth air cells (ELACs) with stereolithographic biomodelling. The visible human dataset (VHD) was used as the input imaging data. The ...