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Diabetes spect pet

Ismet Sarikaya, A H Elgazzar, M A Alfeeli, P N Sharma, A Sarikaya
Objective: F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) has been increasingly used in myocardial viability imaging. In routine PET viability studies, oral glucose and intravenous insulin loading is commonly utilized. In an optimal study, glucose and insulin loading is expected to cause FDG uptake both in hibernating and normal myocardium. However, in routine studies it is not uncommon to see absent or reduced FDG uptake in normal myocardium. In this retrospective study we further analyzed our PET viability images to evaluate FDG uptake status in myocardium under the oral glucose and intravenous insulin loading protocol that we use in our hospital...
April 2018: Journal of the Saudi Heart Association
Alberto Signore, Kelly Luz Anzola, Sveva Auletta, Michela Varani, Agnese Petitti, Marta Pacilio, Filippo Galli, Chiara Lauri
In the field of inflammation imaging, nuclear medicine techniques can be considered as a non-invasive tool to early detect pathophysiological changes I affected tissues. These changes usually occur before clinical onset of symptoms and before the development of anatomical changes, that are commonly detected by radiological procedures. This is particularly important for prognostic purposes, therapy decision making and for therapy follow-up. Here we review the current state-of-theart of nuclear medicine for diagnostic purposes in different conditions characterized by a chronic inflammation, such as vulnerable atherosclerotic plaques, vasculitides, rheumatoid arthritis, Sjogren syndrome, autoimmune thyroid diseases, inflammatory bowel diseases, Coeliac disease, Type 1 diabetes mellitus and other immunological diseases...
January 29, 2018: Current Pharmaceutical Design
Fang Zhang, Guiyang Hao, Mengle Shao, Kien Nham, Yu An, Qiong Wang, Yi Zhu, Christine M Kusminski, Gedaa Hassan, Rana K Gupta, Qiwei Zhai, Xiankai Sun, Philipp E Scherer, Orhan K Oz
[18 F]Fluorodeoxyglucose-PET/CT (18 F-FDG-PET/CT) imaging has been invaluable for visualizing metabolically active adipose tissues in humans with potential anti-diabetic and anti-obesity effects. To explore whether mice display human-like fat depots in anatomically comparable regions, we mapped fat depots using glucose or fatty acid imaging tracers, such as 18 F-FDG through PET/CT or [123/125 I]-β-methyl-p-iodophenyl-pentadecanoic acid with SPECT/CT imaging, to analogous depots in mice. Using this type of image analysis with both probes, we define a large number of additional areas of high metabolic activity corresponding to novel fat pads...
January 9, 2018: Cell Metabolism
Martina Sollini, Chiara Lauri, Roberto Boni, Elena Lazzeri, Paola Anna Erba, Alberto Signore
There is an increased need to find non-invasive tools for early diagnosis and follow-up of infections. Nuclear medicine techniques may be used to diagnose, localize and evaluate the severity and the extent of infections before the occurrence of anatomical abnormalities. This review focuses on different approaches based on radiolabelled cells, peptides and antibodies or [18F]FDG to image infective diseases in agreement with what is being jointly evaluated by the European Association of Nuclear Medicine (EANM)...
January 9, 2018: Current Pharmaceutical Design
Zohar Keidar
Nuclear Medicine (NM) imaging plays a major role in the assessment of infection and inflammation. Tracers, including single photon emitting radionuclides for single photon emission tomography (SPECT) and agents for positron emission tomography (PET), reflect primarily tissue and cellular function or metabolism. In the specific clinical setting of a patient with suspected infectious or inflammatory process, planar scintigraphy, SPECT or PET procedures are used to support a clinically suspected diagnosis. Integrating metabolic and anatomic information using a single SPECT/CT or PET/CT technique has substantially improved the diagnostic accuracy of these imaging tests and advanced the NM technology to be a significant and important tool in the field of infection and inflammation...
November 29, 2017: Current Pharmaceutical Design
S Lacerda, J-F Morfin, C F G C Geraldes, É Tóth
Aggregation of misfolded proteins and progressive polymerization of otherwise soluble proteins is a common hallmark of a wide range of highly debilitating and increasingly prevalent diseases, including amyotrophic lateral sclerosis, cerebral amyloid angiopathy, type II diabetes and Parkinson's, Huntington's and Alzheimer's diseases. There is a growing interest in creating imaging agents to detect such aggregates in various imaging modalities, including PET, SPECT and MRI. We present here an overview of recent efforts from the perspective of early diagnosis of amyloid diseases, with a major focus on Aβ detection and metal complexes bearing PiB units...
October 31, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
Andreas Jodal, Roger Schibli, Martin Béhé
β-cells, located in the islets of the pancreas, are responsible for production and secretion of insulin and play a crucial role in blood sugar regulation. Pathologic β-cells often cause serious medical conditions affecting blood glucose level, which severely impact life quality and are life-threatening if untreated. With 347 million patients, diabetes is one of the most prevalent diseases, and will continue to be one of the largest socioeconomic challenges in the future. The diagnosis still relies mainly on indirect methods like blood sugar measurements...
April 2017: European Journal of Nuclear Medicine and Molecular Imaging
Tessa Brabander, Jaap Teunissen, Dik Kwekkeboom
PURPOSE: Physiological uptake in the uncinate process or pancreatic head has been described with Ga-labeled PET tracers for somatostatin receptor imaging. In-DTPA-octreotide is the only registered radiopharmaceutical for the imaging of neuroendocrine tumors. We studied the uptake in this region of the pancreatic head on somatostatin receptor scintigraphy (SRS) using In-DTPA-octreotide in a large group of patients. Furthermore, known physiological and clinical characteristics are discussed in an attempt to elucidate this phenomenon...
January 2017: Clinical Nuclear Medicine
E Dall'Ara, M Boudiffa, C Taylor, D Schug, E Fiegle, A J Kennerley, C Damianou, G M Tozer, F Kiessling, R Müller
Several non-invasive imaging techniques are used to investigate the effect of pathologies and treatments over time in mouse models. Each preclinical in vivo technique provides longitudinal and quantitative measurements of changes in tissues and organs, which are fundamental for the evaluation of alterations in phenotype due to pathologies, interventions and treatments. However, it is still unclear how these imaging modalities can be used to study ageing with mice models. Almost all age related pathologies in mice such as osteoporosis, arthritis, diabetes, cancer, thrombi, dementia, to name a few, can be imaged in vivo by at least one longitudinal imaging modality...
December 2016: Mechanisms of Ageing and Development
Christopher J Palestro
There are numerous imaging tests for diagnosing musculoskeletal infection. Radiographs are routinely performed, because even when not diagnostic, they provide an anatomic overview of the region of interest that could influence subsequent procedure selection and interpretation. MRI is sensitive and provides superb anatomic detail. Bone scintigraphy accurately diagnoses osteomyelitis in bones not affected by underlying conditions. (67)Ga is used primarily for spondylodiskitis. Although in vitro labeled leukocyte imaging is the radionuclide test of choice for complicating osteomyelitis such as diabetic pedal osteomyelitis and prosthetic joint infection, it is not useful for spondylodiskitis...
September 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
Anneli Rydén, Görel Nyman, Lovisa Nalin, Susanne Andreasson, Olle Korsgren, Olof Eriksson, Marianne Jensen-Waern
INTRODUCTION: Radiolabeled Exendin-4, a synthetic glucagon-like peptide-1 (GLP-1) analog, is used as a tracer for diagnostic purposes of β-cells and in experimental animal research. Exendin-4 can be radiolabeled with (68)Ga, (111)In or (99m)Tc and used for positron emission tomography (PET) and single-photon emission computed tomography (SPECT) imaging to diagnose insulinomas, visualization of pancreatic β-cell mass and transplanted Islets of Langerhans. In humans, Exendin-4 is widely used as a therapeutic agent for treatment of type 2 diabetes (T2D)...
July 2016: Nuclear Medicine and Biology
Kenichiro Sato, Ayumi Hida, Masashi Kameyama, Miyako Morooka, Sousuke Takeuchi
We report a 64-year-old man with diabetic chorea whom we investigated with dopamine transporter SPECT, F FDG PET, Tc ethylcysteinate dimer (ECD) SPECT, and I metaiodobenzylguanidine (MIBG) scintigraphy. Dopamine transporter SPECT revealed reduced I ioflupane binding in the bilateral striatum. F FDG PET showed metabolic dysfunction in the bilateral striatum, as shown in earlier studies. Tc ECD SPECT revealed reduced brain perfusion in the bilateral caudate nucleus and putamen. I MIBG scintigraphy revealed no cardiac sympathetic nerve dysfunction...
June 2016: Clinical Nuclear Medicine
Inés González-Suárez, Javier Arpa, Juan José Ríos-Blanco
OBJECTIVE: Endothelial dysfunction is associated with arterial stiffness, a factor that is increasingly recognised as an important determinant of cardiovascular risk. High-flow organs such as the brain and kidneys are particularly sensitive to excessive pressure and flow pulsatility. High, local blood flow is associated with low microvascular impedance, which facilitates the penetration of excessive pulsatile energy into the microvascular bed leading to tissue damage. Systemic endothelial dysfunction and arterial stiffness have been demonstrated in peripheral vessels in associated vasculitis (AAV)...
2016: Cerebrovascular Diseases
Rachael O Forsythe, Robert J Hinchliffe
Assessment of foot perfusion is a vital step in the management of patients with diabetic foot ulceration, in order to understand the risk of amputation and likelihood of wound healing. Underlying peripheral artery disease is a common finding in patients with foot ulceration and is associated with poor outcomes. Assessment of foot perfusion should therefore focus on identifying the presence of peripheral artery disease and to subsequently estimate the effect this may have on wound healing. Assessment of perfusion can be difficult because of the often complex, diffuse and distal nature of peripheral artery disease in patients with diabetes, as well as poor collateralisation and heavy vascular calcification...
January 2016: Diabetes/metabolism Research and Reviews
Corinne Berclaz, Christophe Pache, Arno Bouwens, Daniel Szlag, Antonio Lopez, Lieke Joosten, Selen Ekim, Maarten Brom, Martin Gotthardt, Anne Grapin-Botton, Theo Lasser
The identification of a beta-cell tracer is a major quest in diabetes research. However, since MRI, PET and SPECT cannot resolve individual islets, optical techniques are required to assess the specificity of these tracers. We propose to combine Optical Coherence Microscopy (OCM) with fluorescence detection in a single optical platform to facilitate these initial screening steps from cell culture up to living rodents. OCM can image islets and vascularization without any labeling. Thereby, it alleviates the need of both genetically modified mice to detect islets and injection of external dye to reveal vascularization...
2015: Scientific Reports
A W J M Glaudemans, I Uçkay, B A Lipsky
Diagnosing the presence of infection in the foot of a patient with diabetes can sometimes be a difficult task. Because open wounds are always colonized with microorganisms, most agree that infection should be diagnosed by the presence of systemic or local signs of inflammation. Determining whether or not infection is present in bone can be especially difficult. Diagnosis begins with a history and physical examination in which both classic and 'secondary' findings suggesting invasion of microorganisms or a host response are sought...
June 2015: Diabetic Medicine: a Journal of the British Diabetic Association
Raita Fukasawa, Haruo Hanyu, Soichiro Shimizu, Hidekazu Kanetaka, Hirofumi Sakurai, Kenji Ishii
AIMS: We attempted to identify a dementia subgroup with characteristics associated with diabetes mellitus (DM)-related metabolic abnormalities, referred to as diabetes-related dementia, using longitudinal single photon emission computed tomography (SPECT) and Pittsburgh compound-B (PiB) positron emission tomography (PET). METHODS: We classified 175 patients with clinically diagnosed Alzheimer disease (AD) and DM into 4 subgroups based on brain imaging in a 2013 study...
February 15, 2015: Journal of the Neurological Sciences
R Dörr, J Stumpf, J Dalibor, G Simonis, S G Spitzer
Is coronary revascularization required in a patient with chronic stable coronary artery disease or can optimized medical therapy (OMT) alone be a sufficient alternative? This question has been controversially discussed for non-diabetics as well as for diabetics since the COURAGE and BARI 2D trials. According to our present knowledge, a patient will benefit from coronary revascularization only when either a non-invasive test method, such as single photon emission computed tomography (SPECT) or positron emission tomography (PET) myocardial scintigraphy, stress echocardiography or stress nuclear magnetic resonance imaging, can detect relevant, objective evidence of ischemia >10% of the left ventricular myocardium or when a pathological fractional flow reserve (FFR) <0...
May 2014: Herz
Manon Brundel, L Jaap Kappelle, Geert Jan Biessels
Type 2 diabetes mellitus (T2DM) is associated with cognitive dysfunction and dementia. Brain imaging may provide important clues about underlying processes. This review focuses on the relationship between T2DM and brain abnormalities assessed with different imaging techniques: both structural and functional magnetic resonance imaging (MRI), including diffusion tensor imaging and magnetic resonance spectroscopy, as well as positron emission tomography and single-photon emission computed tomography. Compared to people without diabetes, people with T2DM show slightly more global brain atrophy, which increases gradually over time compared with normal aging...
December 2014: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
Steven P Rowe, Steve Y Cho
Musculoskeletal infections, particularly those in regions of complex anatomy and at postoperative sites, can be difficult to evaluate clinically, yet accurate diagnosis is essential to treat these infections promptly and correctly. Although anatomical imaging modalities are commonly used to diagnose musculoskeletal infections, the application of functional imaging through nuclear medicine techniques has long played a unique and important role in the evaluation of patients with suspected infections. In addition to the standard nuclear medicine single-photon emitting radiotracers traditionally used by nuclear medicine for planar and single-photon emission computed tomography infection imaging, in recent years we have seen a growth in the application of fluorodeoxyglucose (FDG) positron emission tomography (PET) and PET/CT applied to the detection and diagnosis of infection...
April 2014: Seminars in Musculoskeletal Radiology
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