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| Registros recuperados: 14 | |
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| Lomeña,Francisco; Soler,Marina. |
| Positron emission tomography (PET) is an imaging modality that gives information on tissue metabolism and functionalism, different from other imaging techniques like computed tomography (CT) and magnetic resonance imaging (MRI), which provide anatomical or structural information. PET has reached its development in biomedical research because of its capacity to use analogous compounds of many endogenous substance as tracers, and to measure, in vivo and in a non-invasive way, their consumption by the different organs and tissues of the mammalian body. Fluordeoxyglucose-F18 (FDG) PET has been proven to be a tracer adequate for clinical use in oncology and in many neurological diseases, with an excellent cost-efficiency ratio. The current PET-CT scanners can... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: PET; Fluordeoxyglucose-F18 (FDG); Cancer; PET/CT. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000700027 |
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| Lechat, Céline. |
| Faced with the need to exploit off-shore oil fields at ever increasing depths, lighter replacements are being considered for the standard steel cable mooring systems used for platforms. This study considers the mechanical behaviour of synthetic ropes made of two different materials: PET and PEN. The first is already used in ropes to replace steel, and the second could be a potential competitor. A multi-scale study, involving mechanical tests (mainly tensile, creep and cyclic loading) has been carried out on assemblies of various sizes, from ropes of several hundreds kN breaking load to their smallest components: filaments. Strong correlations were found between the quasi-static behaviour of assemblies and the behaviour of filaments, which in itself is... |
| Tipo: Text |
Palavras-chave: Failure; Fatigue; Creep; Tensile loading; Rope; Yarn; Fibre; PEN; PET; Rupture; Fatigue; Fluage; Traction; Câble; Yarn; Fibre; PEN; PET. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/these-4312.pdf |
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| Amaral,Ademir; Itié,Christian; Bok,Bernard. |
| The objective of this work was to evaluate radiation doses delivered to technologists engaged in different tasks involving positron emission tomography (PET) studies with FDG (fluorodeoxyglucose). This investigation was performed in two French nuclear medicine departments, which presented significant differences in their arrangements and radiation safety conditions. Both centers administered about 300 MBq per PET/CT study, although only one of them is a dedicated clinical PET center. Dose equivalent Hp(10) and skin dose Hp(0.07) were measured using Siemens electronic personnel dosimeters. For assessment dose absorbed by hands during drawing up of tracer and injection into the patient, a Polimaster wristwatch gamma dosimeter was employed. Absorbed dose and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electronic Dosimeters; Radioprotection; Technologists; PET. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000600016 |
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| Mata Espinosa, Miguel Ángel. |
| Esta investigación tuvo como objetivo evaluar el potencial de envases de polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con 10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de 24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del PET (DIVMSPET). En el líquido... |
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Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales; Lambs; Rumen fermentation; Rumen bacteria; Ganadería; Doctorado. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/2266 |
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| Mata Espinosa, Miguel Ángel. |
| Esta investigación tuvo como objetivo evaluar el potencial de envases de polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con 10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de 24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del PET (DIVMSPET). En el... |
| Tipo: Tesis |
Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales; Lambs; PET; Rumen fermentation; Rumen bacteria. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1208 |
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| Mata Espinosa, Miguel Ángel. |
| Esta investigación tuvo como objetivo evaluar el potencial de envases de polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con 10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de 24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del PET (DIVMSPET). En el... |
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Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales Lambs; PET; Rumen fermentation; Rumen bacteria. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/858 |
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| Mata Espinosa, Miguel Ángel. |
| Esta investigación tuvo como objetivo evaluar el potencial de envases de polietilentereftalato (PET) molido como fuente de fibra en dietas para ovinos en engorda, en sustitución de rastrojo de maíz. El estudio tuvo una duración de 60 d con 10 d de adaptación. Se utilizaron 30 borregos machos con un peso vivo promedio de 24.87 ± 1.7 kg alojados en jaulas individuales. Los tratamientos (T) incluyeron tres niveles de envases de PET molido en la dieta (en base a MS): T1 = 0 %, T2 = 10 % y T3 = 20 %. Las variables medidas fueron: ganancia diaria de peso (GDP), consumo de materia seca (CMS), digestibilidad in vivo de materia seca (DIVMS), conversión alimenticia (CA), PET en heces (PETh) y digestibilidad in vivo de materia seca del PET (DIVMSPET). En el... |
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Palavras-chave: Ovinos; PET; Fermentación ruminal; Bacterias ruminales Lambs; PET; Rumen fermentation; Rumen bacteria. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/852 |
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| Chevalme,Yanna-Marina; Montravers,Françoise; Vuillez,Jean-Philippe; Zanca,Michel; Fallais,Charles; Oustrin,Jean; Talbot,Jean-Noël. |
| Positron emission tomography (PET) and its recent update PET/CT are very effective diagnostic tools for non-invasive imaging of metabolic or functional disorders in target tissues. The clinical usefulness of fluorodeoxyglucose-(18F) (FDG) has been now widely accepted. Recently, the clinical usefulness of fluoroDOPA-(18F) or FDOPA, an aminoacid labelled with the same positron emitter fluorine-18, has been evaluated and recognised in France and subsequently in several EU countries. FDOPA is diagnostic PET agent, which has been used for decades in imaging the loss of dopaminergic neurons in Parkinson's disease, and more recently to detect, stage and restage neuroendocrine tumours and to search for recurrence of viable glioma tissue. The present article... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Registration of radiopharmaceuticals; PET; FDOPA; Parkinson's disease; Cancer. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000600009 |
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| Palestro,Christopher J.. |
| Nuclear Medicine plays an important role in the evaluation of patients suspected of harboring infection. Gallium imaging is especially useful for opportunistic infections and spinal osteomyelitis. In vitro labeled leukocyte imaging is the current radionuclide gold standard for imaging most infections, in immunocompetent patients, including cardiovascular, postoperative, and musculoskeletal infections (except spinal osteomyelitis). Several in-vivo leukocyte labeling methods have been investigated, but none are widely used. Results obtained with radiolabeled antibiotics have been disappointing. Data on FDG are still emerging, but this agent appears to be especially valuable in fever of unknown origin, spinal osteomyelitis, vasculitis and sarcoidosis. It is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Infection; Labeled leukocytes; Gallium; FDG; PET. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700002 |
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| Bianchi,M.A.F.; Mello,R.H.; Bianchi,H.; Bermond Júnior,J.L.; Ibrahim,P.A.F.. |
| In wild animals, containment is the moment of greatest stress caused by the investigator to the animal due to its natural resistance to the moment of capture, handling, containment and transport, attitudes frankly contrary to his nature. In birds, the restraint must meet certain criteria in order to control the animal's movements, avoiding trauma at the same time that you need to keep your breathing amplitude. The high risk of death during the restraint of these animals raised the need to design a device, from bottles of poly ethylene terephthalate (PET), for containing parrots-browed Amazon (Amazona rhodocorytha), a parrot endemic to the Atlantic Forest in southeastern Brazil, and endangered with extinction, which allowed the observation of respiration,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wild birds; Physical restraint; Stress control; PET; Recycling. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000100136 |
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| Talbot,Jean-Noël. |
| We have evaluated the clinical impact of FDG-PET on patient staging and management during the opening year of our PET centre in France. A questionnaire, translation in French of the questionnaire used recently in California, was sent to the referring physician of each of the 476 patients who had at least one routine FDG-PET examination during the year 2000. Of 348 responses (response rate = 73%), the disease was upstaged in 26% of the cases and downstaged in 9%. Inter-modality management changes (change from a scheduled therapeutic modality for a different one) were reported in 37% of the cases and intra-modality changes in 9%. Those modification rates were respectively 38% and 7% in recurrence of colorectal cancer (153 patients), 47% and 7% in lung cancer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: PET; [18F]-FDG; Clinical impact; Cancer. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000500009 |
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| Registros recuperados: 14 | |
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