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BACKGROUND Dementia with Lewy bodies (DLB) needs to be distinguished from other types of dementia because of important differences in patient management and outcome. Current clinically based diagnostic criteria for DLB have limited accuracy. Severe nigrostriatal dopaminergic degeneration occurs in DLB, but not in Alzheimer's disease or most other dementia(More)
In this article we study the use of SPECT perfusion imaging for the diagnosis of Alzheimer's disease. We present a classifier based approach that does not need any explicit knowledge about the pathology. We directly use the voxel intensities as features. This approach is compared with three classical approaches: regions of interests, statistical parametric(More)
Alzheimer's disease (AD) is clinically characterized by cognitive symptoms that, in combination with behavioral disturbances, significantly interfere with activities of daily living. These behavioral disorders contribute to the clinical heterogeneity of the disease and probably express different pathophysiological processes. Apathy is one of the most(More)
These guidelines summarize the current views of the European Association of Nuclear Medicine Neuroimaging Committee (ENC). The aim of the guidelines is to assist nuclear medicine practitioners when making recommendations, performing, interpreting, and reporting the results of clinical dopamine transporter (DAT) single photon emission computed tomography(More)
This work aims at providing a tool to assist the interpretation of SPECT images for the diagnosis of Alzheimer's Disease (AD). Our approach is to test classifiers, which uses the intensity values of the images, without any prior information. Such a classifier is built upon a training set, containing images with two different labels (AD patients and normal(More)
UNLABELLED 123I-Labeled radiotracers are suitable for in vivo imaging of the dopaminergic system by SPECT. However, precise measurement of striatal uptake is limited by scatter, attenuation, and the finite spatial resolution of the camera. We studied the quantitative accuracy that can be achieved with (123)I SPECT of the dopaminergic neurotransmission(More)
OBJECTIVES To determine the electroclinical characteristics and causative factors of nonconvulsive status epilepticus (NCSE) of frontal origin. METHODS The authors conducted a 5-year prospective study. RESULTS Ten patients were studied (seven men, three women; mean age, 56.4 years). Six patients did not have previous epilepsy. The mean diagnostic delay(More)
Subclinical rhythmic electrographic discharge in adults (SREDA) is considered a benign EEG pattern of uncertain significance, although it may closely resemble an EEG seizure pattern. We investigated a 57-year-old man with a very lateralized epileptiform activity localized to the occipito-temporal areas of the right hemisphere. Neuropsychological tests,(More)
We present a robust intrasubject registration method for the synergistic use of multiple neuroimaging modalities, with applications to magnetic resonance imaging (MRI), functional MRI, perfusion MRI, MR spectroscopy, and single-photon emission computed tomography (SPECT). This method allows user-friendly processing of difficult examinations (low spatial(More)
" Diffuse correlation spectroscopy " (DCS) is a technology for non-invasive transcranial measurement of cerebral blood flow (CBF) that can be hybridized with " near-infrared spectroscopy " (NIRS). Taken together these methods hold potential for monitoring hemodynamics in stroke patients. We explore the utility of DCS and NIRS to measure effects of(More)