André A. Bell

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Activation of serotonin (5-hydroxytryptamine, 5-HT) receptors in the brain produces cardiovascular responses by altering autonomic outflow. The paraventricular nucleus (PVN) contains a modest density of 5-HT receptors and has connections to autonomic centers. Experiments were designed to determine whether cardiovascular responses were produced by the(More)
title = {{H}igh {D}ynamic {R}ange {I}mages as a {B}asis for {D}etection of {A}rgyrophilic {N}ucleolar {O}rganizer {R}egions {U}nder {V}arying {S}tain {I}ntensities}, ABSTRACT Silver staining of cytopathologic specimens offers advantages in cancer diagnostics. A difficulty with such stained cell specimens is the very high dynamic range needed by the imaging(More)
For successful cure, cancer has to be detected as early as possible. Since cancer starts from a single cell, this can best be done using cytopathological methods. One important diagnostically relevant measure is the proliferation rate of the cells, which can be estimated from segmented silver stained nuclei. However, the microscopy images of silver stained(More)
@article{Bell2009a, author = {Andr\'{e}˜A.˜Bell and Johannes˜Brauers and Jens˜N.˜Kaftan and Dietrich˜Meyer-Ebrecht and Alfred˜B\"{o}cking and Til˜Aach}, title = {{H}igh {D}ynamic {R}ange {M}icroscopy for {C}ytopathological {C}ancer {D}iagnosis}, created from file: hdrmicroscopy.tex cover page automatically created with CoverPage.sty Abstract—Cancer is one(More)
The mean shift algorithm is a powerful clustering technique, which is based on an iterative scheme to detect modes in a probability density function. It has been utilized for image segmentation by seeking the modes in a feature space composed of spatial and color information. Although the modes of the feature space can be efficiently calculated in that(More)
title = {{S}egmentation of {N}ucleolar {O}rganizer {R}egions by {M}eans of {H}igh {D}ynamic {R}ange {C}ell {I}maging and {A}nalysis}, Abstract Active nucleolar organizer regions (NORs) are affine to silver (Ag) and therefore visible in silver stained cell specimens. These so called AgNORs are of diagnostic relevance for early cancer diagnosis. Therefore we(More)
booktitle = {Bildverarbeitung f{\"u}r die Medizin 2011}, address = {L{\"u}beck}, pages = {28-33}, volume = {574}, author = {David Friedrich and Andr\'{e} Bell and Kraisorn Chaisaowong and Till Braunschweig and Ruth Kn{\"u}chel-Cl Abstract. Immunocytochemical markers are increasingly applied for diagnosis of diseases. Usually two or more marker stains are(More)
this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. ABSTRACT Microscopy-based diagnosis of certain diseases or infections, e.g. with human papilloma viruses (HPV) for the(More)