Tomography Emission Computed Single Photon Methods
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Does Tight Glucose Control During the First 24 hours of Hospitalization Reduce Scintigraphic Infarct Size in STEMI Patients?
Abstract Background Hyperglycemia at the time of admission is related to increased mortality and poor prognosis in patients diagnosed with ST-segment elevation myocardial infarction (STEMI). Objective We aimed to investigate whether tight glucose control during the first 24 hours of STEMI decreases the scintigraphic infarct size. Methods The study populat
Int. J. Cardiovasc. Sci.. Publicado em: 2020-10
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2. Otorhinolaryngologists and Coronavirus Disease 2019 (COVID-19)
Abstract Introduction The efficacy of sentinel node biopsy in early stage oral cancer is well established. Its evolving role can be reinforced by further studies. Objective Analyzing the predictability of the levels of echelon nodes for various oral cavity tumor subsites on sentinel node biopsy. Methods A prospective study of 20 patients with stage I/I
Int. Arch. Otorhinolaryngol.. Publicado em: 2020-06
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3. Can Sentinel Lymph Node Biopsy Predict Various Levels of Echelon Nodes in Oral Cancers?
Abstract Introduction The efficacy of sentinel node biopsy in early stage oral cancer is well established. Its evolving role can be reinforced by further studies. Objective Analyzing the predictability of the levels of echelon nodes for various oral cavity tumor subsites on sentinel node biopsy. Methods A prospective study of 20 patients with stage I/I
Int. Arch. Otorhinolaryngol.. Publicado em: 2020-06
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4. The role of fetal-maternal microchimerism as a natural-born healer in integrity improvement of maternal damaged kidney
ABSTRACT Purpose: To identify the fetal stem cell (FSC) response to maternal renal injury with emphasis on renal integrity improvement and Y chromosome detection in damaged maternal kidney. Materials and Methods: Eight non-green fluorescent protein (GFP) transgenic Sprague-Dawley rats were mated with GFP-positive transgenic male rats. Renal damage was indu
Int. braz j urol.. Publicado em: 2018-06
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5. Myocardial blood flow assessment with 82rubidium-PET imaging in patients with left bundle branch block
OBJECTIVES: Perfusion abnormalities are frequently seen in Single Photon Emission Computed Tomography (SPECT) when a left bundle branch block is present. A few studies have shown decreased coronary flow reserve in the left anterior descending territory, regardless of the presence of coronary artery disease. OBJECTIVE: We sought to investigate rubidium-82 (
Clinics. Publicado em: 2015-11
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6. Preoperative nodal staging of non-small cell lung cancer using 99mTc-sestamibi spect/ct imaging
OBJECTIVES: The proper nodal staging of non-small cell lung cancer is important for choosing the best treatment modality. Although computed tomography remains the first-line imaging test for the primary staging of lung cancer, its limitations for mediastinum nodal staging are well known. The aim of this study is to evaluate the accuracy of hybrid single-phot
Clinics. Publicado em: 2011
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7. Neuroimaging in Alzheimer's disease: current role in clinical practice and potential future applications
'Alzheimer's disease is the most common cause of dementia and its prevalence is expected to increase in the coming years. Therefore, accurate diagnosis is crucial for patients, clinicians and researchers. Neuroimaging techniques have provided invaluable information about Alzheimer's disease and, owing to recent advances, these methods will have an increasing
Clinics. Publicado em: 2011
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8. Estadiamento mediastinal pré-operatório em câncer de pulmão de não pequenas células utilizando fusão de imagem SPECT/TC com 99mTC-SESTAMIBI / Preoperative mediastinal staging in non-small cell lung cancer using image fusion SPECT/CT with 99mTc-Sestamibi
INTRODUCTION: The proper nodal staging of non-small cell lung cancer is important to choose the best treatment modality. Although CT is the first-line imaging test for primary staging of lung cancer, it is well known its limitations on mediastinum nodal staging. The aim was to evaluate the accuracy of SPECT/CT using 99mTc-sestamibi in the nodal staging of pa
Publicado em: 2011
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9. O SPECT no diagnóstico diferencial entre crise epiléptica e crise não epiléptica psicogênica / The SPECT in the differential diagnosis between epileptic and nonepileptic seizures
O presente estudo comparou o fluxo sanguíneo cerebral regional avaliado através da tomografia por emissão de fóton simples (SPECT) de pacientes com crises epilépticas temporais com pacientes com crises não epilépticas psicogênicas (CNEP). Todos os SPECT foram realizado no período ictal, tendo as CNEP sido induzidas por métodos sugestivos e de hipno
Publicado em: 2010
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10. Transcranial magnetic stimulation efficiency in patients with tinnitus and normal pure-tone audiometry: clinical and neuroimaging evaluation. / Eficácia da estimulação magnética transcraniana em pacientes com zumbido e audiometria normal: avaliação clínica e por neuroimagem
INTRODUCTION: Tinnitus is a frequent disorder which is very difficult to treat. There is compelling evidence that tinnitus is associated with functional alterations in the central nervous system. Recently, the targeted modulation of tinnitus-related cortical activity through repetitive transcranial magnetic stimulation (rTMS) has been proposed as a promising
Publicado em: 2009
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11. Considerations about the influence of upper arms positioning on myocardial perfusion scintigraphy results / Considerações referentes à influência do posicionamento dos membros superiores sobre o resultado da cintilografia de perfusão do miocárdio
Contrary to the advances in imaging technology for nuclear cardiology applications, we keep using the same often uncomfortable and sometimes impracticable patient position- supine with arms raised above the head (C). We tested another position modality: supine with arms down at the sides of the trunk (T). The purpose of this study was to verify if the functi
Publicado em: 2008
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12. Activity and attenuation recovery from activity dataonly in emission computed tomography
We describe the continuous and discrete mathematical models for Emission Computed Tomography (ECT) and the need for attenuation correction. Then we analyse the problem of retrieving the attenuation directly from the emission data, nonuniqueness and its consequences. We present the existing and new approaches for solving the problem. Methods are compared and
Computational & Applied Mathematics. Publicado em: 2006