Concept

Functional imaging

Publications associées (97)

MRI/fMRI-Compatible Robotic System With Force Feedback for Interaction With Human Motion

Hannes Bleuler, Roger Gassert, Etienne Burdet, Roland Moser

This paper presents a robotic system that is compatible with anatomical magnetic resonance imaging (MRI) as well as with the more sensitive functional MRI (fMRI), and can safely and smoothly interact with humanmotion during the imaging. The system takes ad ...

2006

Surfing the Brain—An Overview of Wavelet-Based Techniques for fMRI Data Analysis

Michaël Unser, Dimitri Nestor Alice Van De Ville, Thierry Blu

The measurement of brain activity in a noninvasive way is an essential element in modern neurosciences. Modalities such as electroencephalography (EEG) and magnetoencephalography (MEG) recently gained interest, but two classical techniques remain predomina ...

Institute of Electrical and Electronics Engineers2006

Combined laser Doppler and laser speckle imaging for real- time blood blow measurements

Theo Lasser

Laser Doppler (LDI) and laser speckle imaging (LSI) are two optical non-invasive techniques that are used to obtain 2D maps of blood flow in biological tissues. Each of these techniques has some benefits and drawbacks for measuring the blood flow. LSI is a ...

SPIE2006

Improved echo volumar imaging (EVI) for functional MRI

Wietske Van der Zwaag

Echo volumar imaging (EVI) is a 3D modification of echo-planar imaging (EPI) that allows data from an entire volume to be acquired following a single RF excitation. EVI provides a high rate of volumar data acquisition, which is advantageous for functional ...

Wiley-Blackwell2006

Actuation Methods for Applications in MR Environments

Hannes Bleuler, Dominique Chapuis, Roger Gassert, Etienne Burdet, Ludovic Dovat

The choice of an adequate actuation method is a central issue in the development of any mechatronic device and strongly determines the dynamic performances of the system. This choice is particularly difficult for robotic systems working within a magnetic r ...

2006

Investigation of a Cable Transmission for the Actuation of MR Compatible Haptic Interfaces

Hannes Bleuler, Dominique Chapuis, Roger Gassert, Etienne Burdet, Ganesh Gowrishankar

This paper investigates a cable transmission to remotely actuate MR compatible robots over a distance of several meters. Such a transmission could be an interesting solution for haptic interfaces for neuroscience studies performing force feedback during fu ...

2006

FMRI compatible haptic interface actuated with traveling wave ultrasonic motor

Yves Perriard, Dominique Chapuis, Roger Gassert, Markus Flückiger, Matteo Bullo

We are developing haptic interfaces compatible with functional Magnetic Resonance Imaging (fMRI) for neuroscience studies. The presented prototype with one rotary degree of freedom is actuated by a traveling wave ultrasonic motor operating under admittance ...

2005

Multi-Joint Arm Movements to Investigate Motor Control with fMRI

Hannes Bleuler, Roger Gassert, Etienne Burdet, Ludovic Dovat

Performing multi-joint arm movements in controllable dynamic environments during functional magnetic resonance imaging (fMRI) could provide important insights into the brain mechanisms involved in human motor control and related dysfunctions. In order to o ...

2005

Atlas-based segmentation and classification of magnetic resonance brain images

Meritxell Bach Cuadra

A wide range of different image modalities can be found today in medical imaging. These modalities allow the physician to obtain a non-invasive view of the internal organs of the human body, such as the brain. All these three dimensional images are of extr ...

EPFL2003

Guest Editorial: First IEEE Symposium on Biomedical Imaging

Michaël Unser

Guest Editorial Technological advances in biomedical imaging are providing unprecedented opportunities for improving our understanding of biological processes and revealing the anatomical and functional organization of biological systems, from macro- to na ...

2002

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