Publications related to PET-CT

Effect of an abdominal aortic aneurysm on wave reflection in the aorta

Despite extensive attention to abdominal aortic aneurysm (AAA) in the biomedical engineering community, its effect on aortic hemodynamics and arterial wave reflection has not been addressed before. We used experimental and numerical methods, relying on a r ...

2008

Dynamic PET Reconstruction Using Wavelet Regularization with Adapted Basis Functions

Michaël Unser, Dimitri Nestor Alice Van De Ville, Ildar Khalidov

Tomographic reconstruction from positron emission tomography (PET) data is an ill-posed problem that requires regularization. An attractive approach is to impose an

\ell_{ 1 }

-regularization constraint, which favors sparse solutions in the wavelet dom ...

Institute of Electrical and Electronics Engineers2008

Novel CMOS Analog Signal Processing Technique for Solid-State X-Ray Sensors

Rafal Tomasz Dlugosz

Ability to peer into human body is an essential diagnostic tool in medicine. Out of the four major imaging modalities that include ultra-sound, magnetic resonance imaging (MRI), and positron emission tomography (PET), nuclear medicine is gaining more wides ...

2007

Novel CMOS Analog Signal Processing Technique for Solid-State X-Ray Sensors in Medical Imaging Systems

Rafal Tomasz Dlugosz

Ability to peer into human body is an essential diagnostic tool in medicine. Out of the four major imaging modalities that include ultra-sound, magnetic resonance imaging (MRI), and positron emission tomography (PET), nuclear medicine is gaining more wides ...

2007

Étude du tomographe de haute résolution pour petits animaux ClearPET par la méthode de Monte Carlo

Martin Rey

The Lausanne ClearPET demonstrator is one of the new generation of high resolution small animal PET scanners. A high resolution PET scanner aims to maximize the signal-to-noise ratio measured in pixels for a given time without compromising spatial resoluti ...

EPFL2007

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

An Optimized Spline-Based Registration of a 3D CT to a Set of C-Arm Images

Michaël Unser, Philippe Thévenaz

We have developed an algorithm for the rigid-body registration of a CT volume to a set of C-arm images. The algorithm uses a gradient-based iterative minimization of a least-squares measure of dissimilarity between the C-arm images and projections of the C ...

Hindawi Publishing Corporation2006

Point Similarity Measures Based on MRF Modeling of Difference Images for Spline-Based 2D-3D Rigid Registration of x-Ray Fluoroscopy to CT Images

Michaël Unser, Philippe Thévenaz, Xiuwei Zhang

One of the main factors that affect the accuracy of intensity-based registration of two-dimensional (2D) X-ray fluoroscopy to three-dimensional (3D) CT data is the similarity measure, which is a criterion function that is used in the registration procedure ...

Springer2006

Optimal femoral head contour segmentation in CT images using dynamic programming

Charles Baur, Gaëtan Marti

We present a new contour segmentation method for femoral head detection in CT images. The principal idea underlying our approach is to represent the contour using active rays. Each ray has internal energy (continuity and smoothness constraints), as well as ...

2004

Multiresolution-Based Registration of a Volume to a Set of Its Projections

Michaël Unser, Philippe Thévenaz

We have developed an algorithm for the rigid-body registration of a 3D CT to a set of C-arm images by matching them to computed cone-beam projections of the CT (DRRs). We precomputed rescaled versions (pyramid) of the CT volume and of the C-arm images. We ...

SPIE2003

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Effect of an abdominal aortic aneurysm on wave reflection in the aorta

Dynamic PET Reconstruction Using Wavelet Regularization with Adapted Basis Functions

Novel CMOS Analog Signal Processing Technique for Solid-State X-Ray Sensors

Novel CMOS Analog Signal Processing Technique for Solid-State X-Ray Sensors in Medical Imaging Systems

Étude du tomographe de haute résolution pour petits animaux ClearPET par la méthode de Monte Carlo

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

An Optimized Spline-Based Registration of a 3D CT to a Set of C-Arm Images

Point Similarity Measures Based on MRF Modeling of Difference Images for Spline-Based 2D-3D Rigid Registration of x-Ray Fluoroscopy to CT Images

Optimal femoral head contour segmentation in CT images using dynamic programming

Multiresolution-Based Registration of a Volume to a Set of Its Projections

Novel CMOS Analog Signal Processing Technique for Solid-State X-Ray Sensors

Dynamic PET Reconstruction Using Wavelet Regularization with Adapted Basis Functions

Novel CMOS Analog Signal Processing Technique for Solid-State X-Ray Sensors in Medical Imaging Systems

Effect of an abdominal aortic aneurysm on wave reflection in the aorta

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

Étude du tomographe de haute résolution pour petits animaux ClearPET par la méthode de Monte Carlo

An Optimized Spline-Based Registration of a 3D CT to a Set of C-Arm Images

Point Similarity Measures Based on MRF Modeling of Difference Images for Spline-Based 2D-3D Rigid Registration of x-Ray Fluoroscopy to CT Images

Multiresolution-Based Registration of a Volume to a Set of Its Projections

Optimal femoral head contour segmentation in CT images using dynamic programming