نتایج جستجو برای: single photon emission tomography spect data
تعداد نتایج: 3368615 فیلتر نتایج به سال:
[TOP] Dopamine transporter imaging with single photon emission computed tomography (DAT-SPECT) is investigational for all indications, including but not limited to: Aiding in the diagnosis of patients with clinically uncertain parkinsonian syndromes; OR Distinguishing between parkinsonian syndromes and essential tremor; OR Distinguishing between dementia with Lewy bodies and Alzheimer dis...
[TOP] Dopamine transporter imaging with single photon emission computed tomography (DAT-SPECT) is investigational for all indications, including but not limited to: Aiding in the diagnosis of patients with clinically uncertain parkinsonian syndromes; OR Distinguishing between parkinsonian syndromes and essential tremor; OR Distinguishing between dementia with Lewy bodies and Alzheimer dis...
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder first affecting memory functions and then gradually affecting all cognitive functionswith behavioural impairments and eventually causing death. Functional brain imaging as single-photon emission computed tomography (SPECT) is commonly used to guide the clinician’s diagnosis. However, conventional evaluation of these scans ofte...
Single photon emission computed tomography (SPECT) imaging of six Huntington's disease patients revealed a striking reduction in regional uptake of cerebral blood flow markers in vivo. Similar changes were found in one patient with "early stage" disease. The findings are compared with parallel magnetic resonance imaging (MRI) studies, and in one case, results of postmortem examination.
Forty years have passed since the introduction of single-photon emission computed tomography (SPECT)in nuclear cardiology. During this period, there was a shift from Anger-type gamma cameras equipped with one detector to those with multiple detectors. Semiconductor detectors have also become available in recent years. Devices with X-ray CT and positron emission tomography (PET)-compatible ones ...
We apply a uniform Cramer-Rao (CR) bound [l] to study the bias-variance trade-offs in single photon emission computed tomography (SPECT) image reconstruction. The uniform CR bound is used to specify achievable and unachievable regions in the bias-variance trade-off plane. The image reconstruction algorithms considered in this paper are: 1) Space alternating generalized EM and 2) penalized weigh...
[TOP] Dopamine transporter imaging with single photon emission computed tomography (DAT-SPECT) is investigational for all indications, including but not limited to: Aiding in the diagnosis of patients with clinically uncertain parkinsonian syndromes; OR Distinguishing between parkinsonian syndromes and essential tremor; OR Distinguishing between dementia with Lewy bodies and Alzheimer dis...
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There is increasing clinical use of combined positron emission tomography and MRI, but to date there has been no clinical system developed capable of simultaneous single-photon emission computed tomography (SPECT) and MRI. There has been development of preclinical systems, but there are several challenges faced by researchers who are developing a clinical prototype including the need for the sy...
Neuroacanthocytosis syndromes (NA) include autosomal recessive chorea-acanthocytosis and X-linked McLeod syndrome consisting of a choreatic movement disorder, psychiatric manifestations and cognitive decline, and additional multi-system features including myopathy and axonal neuropathy. Fluor 18 -2-fluoro-2-deoxyglucose (18F-FDG-PET) positron emission tomography (PET) and technetium 99m -d, l-h...
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