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Procedure: SPECT

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Total 384 results found since Jan 2013.

Ischemic Stroke Revascularization
We describe the standard surgical strategies, advanced techniques, and controversies concerning revascularization of ischemic stroke. The standard surgical strategies and techniques emphasize how to determine surgical indication, which should be decided for symptomatic internal carotid artery or middle cerebral artery (MCA) occlusive disease with misery perfusion detected by quantitative single photon emission computed tomography. Advanced techniques are available for complex situations such as posterior circulation revascularization, Bonnet bypass for common carotid artery obstruction, and various EC-IC bypasses for ische...
Source: Advances and Technical Standards in Neurosurgery - February 2, 2022 Category: Neurosurgery Authors: Naoki Otani Atsuo Yoshino Source Type: research

Neurological Involvement in Primary Systemic Vasculitis
Conclusion Neurological involvement is a common complication of PSV (Table 1), and neurologists play an important role in the identification and diagnosis of PSV patients with otherwise unexplained neurological symptoms as their chief complaint. This article summarizes the neurological manifestations of PSV and hopes to improve neuroscientists' understanding of this broad range of diseases. TABLE 1 Table 1. Common CNS and PNS involvements of primary systemic vasculitis. Author Contributions SZ conceived the article and wrote the manuscript. DY and GT reviewed and edited the manuscript. All authors ...
Source: Frontiers in Neurology - April 25, 2019 Category: Neurology Source Type: research

A Case of Transient Global Amnesia: A Review and How It May Shed Further Insight into the Neurobiology of Delusions
Conclusion In closing, our patient’s episode of TGA combined with her emotional and perceptual response lends credence to the proposal of a “fear/paranoia” circuit in the genesis of paranoid delusions—a circuit incorporating amygdala, frontal, and parietal cortices. Here, neutral or irrelevant stimuli, thoughts, and percepts come to engender fear and anxiety, while dysfunction in frontoparietal circuitry engenders inappropriate social predictions and maladaptive inferences about the intentions of others.[54] Hippocampus relays information about contextual information based on past experiences and the current situat...
Source: Innovations in Clinical Neuroscience - April 1, 2016 Category: Neuroscience Authors: ICN Online Editor Tags: Anxiety Disorders Behavioral and Cognitive Neurology Case Report Cognition Current Issue Dementia Medical Issues Neurologic Systems and Symptoms Psychiatry Schizophrenia delusions hippocampus neurobiology Transient global amnesia Source Type: research

The masaryk hospital extracranial–intracranial bypass study
Abstract Patients with symptomatic internal carotid artery (ICA) occlusion with haemodynamic impairment are at higher risk of ischaemic stroke, and they require treatment. There are two main options: the best medical treatment and an extracranial–intracranial bypass. The aims of this study are to analyse the 30-day and 2-year risk of stroke and death in patients with extracranial–intracranial bypass performed by our department and to compare our results with major published studies. This retrospective study enrolled patients who underwent surgery from 1998 to 2012. Inclusion criteria were the following: (1) ra...
Source: Neurosurgical Review - May 17, 2016 Category: Neurosurgery Source Type: research

The masaryk hospital extracranial –intracranial bypass study
AbstractPatients with symptomatic internal carotid artery (ICA) occlusion with haemodynamic impairment are at higher risk of ischaemic stroke, and they require treatment. There are two main options: the best medical treatment and an extracranial –intracranial bypass. The aims of this study are to analyse the 30-day and 2-year risk of stroke and death in patients with extracranial–intracranial bypass performed by our department and to compare our results with major published studies. This retrospective study enrolled patients who underwe nt surgery from 1998 to 2012. Inclusion criteria were the following: (1) radiologic...
Source: Neurosurgical Review - December 31, 2016 Category: Neurosurgery Source Type: research

Coronary artery bypass surgery in patients with chronic brain hypoperfusion.
CONCLUSIONS: CABG can be performed at an acceptable risk in patients with brain hypoperfusion. However, these patients suffered high stroke incidence during the follow-up. It is therefore, important to identify those patients preoperatively to plan and implement an appropriate treatment regime. PMID: 29616518 [PubMed - as supplied by publisher]
Source: The Journal of Cardiovascular Surgery - April 3, 2018 Category: Cardiovascular & Thoracic Surgery Authors: Imura H, Maruyama Y, Takahashi K, Nishina D, Nitta T Tags: J Cardiovasc Surg (Torino) Source Type: research

A functional evaluation of cerebral perfusion for coronary artery bypass grafting patients
AbstractWe evaluate the utility of providing a pulsatile blood flow by applying off-pump coronary artery bypass grafting (CABG) or intra-aortic balloon pumping (IABP) with conventional CABG to prevent perioperative stroke in patients with cerebral hypoperfusion on single-photon emission-computed tomography (SPECT). A total of 286 patients underwent isolated CABG with a cerebral magnetic resonance angiography (MRA) evaluation between 2006 and 2015. Seventy-five had significant stenosis and/or occlusion of craniocervical vessels; the other 211 had no significant stenosis. Cerebral SPECT was performed for 49 (SPECT group) of ...
Source: Heart and Vessels - January 31, 2019 Category: Cardiology Source Type: research

Development of a Two-layer Dynamic Cardiac Phantom with a Double Pump.
CONCLUSION: In our dynamic cardiac phantom, different movements could be induced in the myocardial wall by freely changing the stroke ratio. These results suggest that the use of this phantom can realize technical evaluation that presumes various clinical conditions. PMID: 26769601 [PubMed - as supplied by publisher]
Source: Journal of Nuclear Medicine Technology - January 17, 2016 Category: Nuclear Medicine Tags: J Nucl Med Technol Source Type: research

Assessment of cerebral blood perfusion changes after neurorehabilitation therapy in patients with middle cerebral artery infarction: An acetazolamide ‐challenged SPECT study
Abstract Stroke is a leading cause of death and disability worldwide. Although neuroimaging has been used to examine brain changes related to recovery from stroke, cerebral perfusion changes after rehabilitation have yet to be elucidated. The aim of this study was to evaluate the regional cerebral blood flow (rCBF) changes and their associations with gross motor functions after neurorehabilitation therapy in stroke patients. A total of 7 patients with middle cerebral artery (MCA) infarction received conventional neurorehabilitation therapy twice per day for 4‐6 weeks on admission. Brain perfusion images were acquired bef...
Source: International Journal of Imaging Systems and Technology - November 11, 2017 Category: Radiology Authors: Kyung ‐Sool Jang, Jooyeon J. Im, Yong‐An Chung, Sung‐Woo Chung, Hyeonseok S. Jeong, Min‐Wook Kim Tags: RESEARCH ARTICLE Source Type: research

Effect of pre-surgery assessments on the prognosis of patients received extracranial-intracranial bypass surgery.
CONCLUSIONS: Our results suggest that a defined compensatory stage of cerebral ischemia might be useful for the prognosis of patients receiving EI-CI bypass surgery. PMID: 30010157 [PubMed - as supplied by publisher]
Source: Restorative Neurology and Neuroscience - July 18, 2018 Category: Neurology Tags: Restor Neurol Neurosci Source Type: research

In Vivo Quantification of Cerebral Translocator Protein Binding in Humans Using 6-Chloro-2-(4'-123I-Iodophenyl)-3-(N,N-Diethyl)-Imidazo1,2-aPyridine-3-Acetamide SPECT
Conclusion: As demonstrated within a group of stroke and GBM patients, 123I-CLINDE SPECT can be used for quantitative assessment of TSPO expression in vivo. Because of the absence of a region devoid of TSPO, reference tissue models should be used with caution. The 2-tissue-compartment kinetic analysis of a 90-min dynamic scan with arterial blood sampling is recommended for the quantification of 123I-CLINDE binding with SPECT.
Source: Journal of Nuclear Medicine - December 1, 2014 Category: Radiology Authors: Feng, L., Svarer, C., Thomsen, G., de Nijs, R., Larsen, V. A., Jensen, P., Adamsen, D., Dyssegaard, A., Fischer, W., Meden, P., Krieger, D., Moller, K., Knudsen, G. M., Pinborg, L. H. Tags: Clinical Investigations Source Type: research

Improvement of memory impairments in poststroke patients by hyperbaric oxygen therapy.
Objective: Several recent studies have shown that hyperbaric oxygen (HBO₂) therapy carry cognitive and motor therapeutic effects for patients with acquired brain injuries. The goal of this study was to address the specific effects of HBO₂ on memory impairments after stroke at late chronic stages. Method: A retrospective analysis was conducted on data of 91 stroke patients 18 years or older (mean age ∼60 years) who had either ischemic or hemorrhagic stroke 3–180 months before HBO₂ therapy (M = 30–35 months). The HBO₂ protocol included 40 to 60 daily sessions, 5 days per week, 90 min each, 100% oxygen at 2ATA, ...
Source: Neuropsychology - November 10, 2014 Category: Neurology Authors: Boussi-Gross, Rahav; Golan, Haim; Volkov, Olga; Bechor, Yair; Hoofien, Dan; Schnaider Beeri, Michal; Ben-Jacob, Eshel; Efrati, Shai Source Type: research

Recurrent Bleeding in Hemorrhagic Moyamoya Disease : Prognostic Implications of the Perfusion Status.
CONCLUSION: Decreased basal perfusion seems to be associated with recurrent bleeding. Revascularization might prevent recurrent stroke in hMMD by rectifying the perfusion abnormality. A larger-sized, controlled study is required to address this issue. PMID: 26962416 [PubMed]
Source: Journal of Korean Neurosurgical Society - March 12, 2016 Category: Neurosurgery Tags: J Korean Neurosurg Soc Source Type: research