Antibodies generated against synthetic peptides that correspond to highly conserved sequence motifs in the annexins reacted with a variety of annexins from different species. These include Xenopus laevis and Drosophila melanogaster, which contain cross-reacting polypeptides of apparent Mr 34,000 and 30,000. As expected for typical annexins, the two Drosophila proteins interact in a Ca2+-depende...

In this paper, we consider the problem of multi-resolution compressed sensing (MR-CS) reconstruction, which has received little attention in the literature. Instead of always reconstructing the signal at the original high resolution (HR), we enable the reconstruction of a low-resolution (LR) signal when there are not enough CS samples to recover a HR signal. We propose an approximate message pa...

We have previously demonstrated that a monoclonal antibody (5F7) directed against the heavy chain region of factor XI inhibits the binding of factor XI to high molecular weight kininogen (high Mr kininogen) and the surface-mediated proteolytic activation of factor XI by factor XIIa in the presence of high Mr kininogen. In order to identify the structural domain of factor XI that binds high Mr k...

In Medical Diagnostic, Magnetic Resonance Images play a major role. Magnetic Resonance images are normally corrupted by random noise from the measurement process complicating the automatic feature extraction and analysis of clinical data. Because of this reason noise removal methods have been customarily applied to improve MR image quality. This work proposed a new scheme based on applying a se...

background: several competing geometric and hemodynamic factors are suggested as contributing mechanisms for functional mitral regurgitation (mr) in heart failure patients. we aimed to study the relationships between the severity of mr and the qrs duration and dyssynchrony markers in patients with ischemic or dilated cardiomyopathy. methods: w e prospectively evaluated 251 heart failure patient...

Intensity nonuniformity in magnetic resonance (MR) images, represented by a smooth and slowly varying function, is a typical artifact that is a nuisance for many image processing methods. To eliminate the artifact, we have to estimate the nonuniformity as a smooth and slowly varying function and factor it out from the given data. We reformulate the problem as a problem of finding a unique smoot...

In this paper the influence of intensity clustering and shading correction on mutual information based image registration is studied. Instead of the generally used equidistant re-binning, we use k-means clustering in order to achieve a more natural binning of the intensity distribution. Secondly, image inhomogeneities occurring notably in MR images can have adverse effects on the registration. ...

Abstract. This paper presents the application of the methods proposed in [1] to estimate displacements fields from two dimensional ultrasound sequences of the heart using spatiotemporal non-rigid registration. The main topic of our work is the application of these techniques to MR sequences, and validation of the obtained cardiac parameters: displacement, velocity and strain fields. The methods...

Clinical MRI data is normally corrupted by random noise from the measurement process which reduces the accuracy and reliability of any automatic analysis. For this reason, de-noising methods are often applied to increase the SNR and improve image quality. Most of these methods work on single channel images by correcting each grey level using an implicit model of the surrounding region, but with...

Different magnetic resonance imaging pulse sequences are used to generate image contrasts based on physical properties of tissues, which provide different and often complementary information about them. Therefore multiple image contrasts are useful for multimodal analysis of medical images. Often, medical image processing algorithms are optimized for particular image contrasts. If a desirable c...