User profiles for O. Speck

Oliver Speck

Professor für Physik, Otto-von-Guericke Universität
Verified email at ovgu.de
Cited by 21148

Prospective motion correction in brain imaging: a review

J Maclaren, M Herbst, O Speck… - Magnetic resonance in …, 2013 - Wiley Online Library
Motion correction in magnetic resonance imaging by real‐time adjustment of the imaging
pulse sequence was first proposed more than 20 years ago. Recent advances have resulted …

[HTML][HTML] Pros and cons of ultra-high-field MRI/MRS for human application

…, AM Nagel, DG Norris, S Schmitter, O Speck… - Progress in nuclear …, 2018 - Elsevier
Magnetic resonance imaging and spectroscopic techniques are widely used in humans
both for clinical diagnostic applications and in basic research areas such as cognitive …

Locus coeruleus imaging as a biomarker for noradrenergic dysfunction in neurodegenerative diseases

…, CF Madelung, D Meder, AJ Ehrenberg, O Speck… - Brain, 2019 - academic.oup.com
Pathological alterations to the locus coeruleus, the major source of noradrenaline in the
brain, are histologically evident in early stages of neurodegenerative diseases. Novel MRI …

Neuroimaging standards for research into small vessel disease and its contribution to ageing and neurodegeneration

…, R van Oostenbrugge, L Pantoni, O Speck… - The Lancet …, 2013 - thelancet.com
Cerebral small vessel disease (SVD) is a common accompaniment of ageing. Features
seen on neuroimaging include recent small subcortical infarcts, lacunes, white matter …

Point spread function mapping with parallel imaging techniques and high acceleration factors: Fast, robust, and flexible method for echo‐planar imaging distortion …

M Zaitsev, J Hennig, O Speck - Magnetic Resonance in …, 2004 - Wiley Online Library
Echo‐planar imaging (EPI) is an ultrafast magnetic resonance (MR) imaging technique prone
to geometric distortions. Various correction techniques have been developed to remedy …

CHAOS challenge-combined (CT-MR) healthy abdominal organ segmentation

…, R Rajan, D Sheet, G Dovletov, O Speck… - Medical Image …, 2021 - Elsevier
Segmentation of abdominal organs has been a comprehensive, yet unresolved, research
field for many years. In the last decade, intensive developments in deep learning (DL) …

Magnetic resonance imaging of freely moving objects: prospective real-time motion correction using an external optical motion tracking system

M Zaitsev, C Dold, G Sakas, J Hennig, O Speck - Neuroimage, 2006 - Elsevier
Subject motion and associated artefacts limit the applicability of MRI and the achievable quality
of the images acquired. In this paper, a fully integrated method for prospective correction …

Evidence for long-term neurotoxicity associated with methamphetamine abuse: a 1H MRS study

T Ernst, L Chang, M Leonido–Yee, O Speck - Neurology, 2000 - AAN Enterprises
Objective: To determine whether proton MRS ( 1 H MRS) can detect long-term metabolite
abnormalities in abstinent methamphetamine users. Background: Methamphetamine is toxic to …

Signal‐to‐noise ratio and MR tissue parameters in human brain imaging at 3, 7, and 9.4 tesla using current receive coil arrays

R Pohmann, O Speck, K Scheffler - Magnetic resonance in …, 2016 - Wiley Online Library
Purpose Relaxation times, transmit homogeneity, signal‐to‐noise ratio (SNR) and parallel
imaging g‐factor were determined in the human brain at 3T, 7T, and 9.4T, using standard, tight…

Gender differences in the functional organization of the brain for working memory

O Speck, T Ernst, J Braun, C Koch, E Miller… - Neuroreport, 2000 - journals.lww.com
Gender differences in brain activation during working memory tasks were examined with
fMRI. Seventeen right-handed subjects (nine males, eight females) were studied with four …