Optimized sampling for high resolution multi-pinhole brain SPECT with stationary detectors.

Optimized sampling for high resolution multi-pinhole brain SPECT with stationary detectors. Phys Med Biol. 2019 Nov 26;: Authors: Chen Y, Goorden MC, Vastenhouw B, Beekman FJ Abstract Brain perfusion SPECT can be used in the diagnosis of various neurologic or psychiatric disorders, e.g. stroke, epilepsy, dementia and posttraumatic stress disorder. As traditional SPECT provides limited resolution and sensitivity, we recently proposed a high resolution focusing multi-pinhole clinical SPECT scanner dubbed G-SPECT-I (Beekman et al 2015). G-SPECT-I achieves data completeness in the scan region of interest by making small translations of the patient bed while using projections from all bed positions together for image reconstruction. A strategy to restrict the number of bed translations is desired to minimize overhead time. Previously we presented optimized bed translation paths for focused partial brain imaging, while here we focus on whole brain imaging which is the common procedure in perfusion studies. Thus, a series of noise-free scans using a reduced number of bed positions were simulated and compared to an oversampled reference scan acquired with 128 bed positions. Noisy simulations were included to validate the utility of the optimized sequences in more realistic situations. Brain Uptake Ratios (BURs) and left-right Asymmetry Indices (AIs) in 51 selected Regions of Interest (ROIs) were calculated for assessment. Results show that images were barely aff...
Source: Physics in Medicine and Biology - Category: Physics Authors: Tags: Phys Med Biol Source Type: research

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CONCLUSION: The effectiveness of behavioural activation in randomized controlled trials varied from small to large (d = 0.24-1.7) in reducing depression. The content of behavioural activation was comparable to established treatment manuals. Adaptations appeared to support individuals to engage in therapy. REVIEW REGISTRATION: PROSPERO 2018, CRD42018102604. PMID: 31875690 [PubMed - as supplied by publisher]
Source: Clinical Rehabilitation - Category: Rehabilitation Authors: Tags: Clin Rehabil Source Type: research
In this study, by adenovirus-mediated delivery and inducible transgenic mouse models, we demonstrate the proliferation of both HCs and SCs by combined Notch1 and Myc activation in in vitro and in vivo inner ear adult mouse models. These proliferating mature SCs and HCs maintain their respective identities. Moreover, when presented with HC induction signals, reprogrammed adult SCs transdifferentiate into HC-like cells both in vitro and in vivo. Finally, our data suggest that regenerated HC-like cells likely possess functional transduction channels and are able to form connections with adult auditory neurons. Epige...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
ConclusionsAED use was common in nursing homes, with gabapentin most commonly used (presumably for pain). That multiple comorbidities were associated with AED use underscores the need for future studies to investigate the safety and effectiveness of AED use in nursing home residents.
Source: Drugs and Aging - Category: Geriatrics Source Type: research
ConclusionThis case highlights the importance of genetics shaping phenotypes and that consideration should always be given to a full relevant family history.  It also shows a rare case of rapidly progressive dementia confirmed due to CJD with a likely underlying familial predisposition.
Source: Age and Ageing - Category: Geriatrics Source Type: research
[Cameroon Tribune] Our brains are currently at serious risk because of diseases such as epilepsy, stroke, AIDS, dementia and so on. There is also danger from drug abuse and addictions, especially amongst youths, resulting in behavioural disorders which contribute to some of the major crises the nation is facing. Therefore, brain or mental health problems stand among the most common and severe in Cameroon. In the following interview, Prof. Alfred Kongnyu Njamnshi, lecturer, Faculty of Medicine and Biomedical Sciences, Univers
Source: AllAfrica News: Health and Medicine - Category: African Health Source Type: news
Preoperative and postoperative mental health status (MHS) of total joint arthroplasty patients can affect immediate and long-term outcomes following surgery. Alterations in MHS can be acute or chronic. The most common etiologies include acute changes due to (1) delirium or stroke, (2) movement disorders (Alzheimer dementia, Parkinson disease, multiple sclerosis, epilepsy), and (3) mood/behavior disorders (major depressive disorder, anxiety, bipolar disorder, schizophrenia). Across etiologies, alterations in MHS are associated with worse clinical/patient-reported outcomes and greater total cost of care. Prevention via pharm...
Source: Techniques in Orthopaedics - Category: Orthopaedics Tags: Symposium Source Type: research
Authors: Lai HC, Chang QY, Hsieh CL Abstract In this article, we review signal transduction pathways through which acupuncture treats nervous system diseases. We electronically searched the databases, including PubMed, MEDLINE, clinical Key, the Cochrane Library, and the China National Knowledge Infrastructure from their inception to December 2018 using the following MeSH headings and keywords alone or in varied combination: acupuncture, molecular, signal transduction, genetic, cerebral ischemic injury, cerebral hemorrhagic injury, stroke, epilepsy, seizure, depression, Alzheimer's disease, dementia, vascular demen...
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
CONCLUSIONS: Vascular risk factors and sociodemographic characteristics were the best predictors of cognitive outcomes in a sample of late-onset epilepsy with cerebral small-vessel disease. Epilepsy did not show influence on cognitive function. Longitudinal studies are necessary to clarify the relationship between vascular risk factors and epilepsy on progression of cognitive deterioration in patients with late-onset epilepsy. "This article is part of the Special Issue "Seizures &Stroke"". PMID: 31399342 [PubMed - as supplied by publisher]
Source: Epilepsy and Behaviour - Category: Neurology Authors: Tags: Epilepsy Behav Source Type: research
Abstract Homocysteine (Hcy); a sulfur-containing non-proteinogenic amino acid is generated as a metabolic intermediate. Hcy constitutes an important part of the "1-carbon metabolism" during methionine turnover. Elevated levels of Hcy known as hyperhomocysteinemia (HHcy) results from vitamin B deficiency, lack of exercise, smoking, excessive alcohol intake, high fat and methionine rich diet, and the underlying genetic defects. These factors directly affect the "1-carbon metabolism (methionine-Hcy-folate)" of a given cell. In fact, the Hcy levels are determined primarily by dietary intake, vitami...
Source: Canadian Journal of Physiology and Pharmacology - Category: Drugs & Pharmacology Authors: Tags: Can J Physiol Pharmacol Source Type: research
Publication date: Available online 29 July 2019Source: Epilepsy &BehaviorAuthor(s): Hedley C.A. Emsley, Laura M. ParkesAbstractThere is an important bidirectional relationship between seizures and cerebrovascular disease (CVD). Aside from poststroke epilepsy, Occult CVD is an important cause of late-onset seizures (LOS) and late-onset epilepsy (LOE). Late-onset seizures/LOE are associated with a threefold increased risk of subsequent clinical stroke. This relationship exists not only in later life, but with ‘late-onset’ seizures or epilepsy occurring from the fourth decade of life onwards. There is increasi...
Source: Epilepsy and Behavior - Category: Neurology Source Type: research
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