Vented explosion of hydrogen/air mixture: An intercomparison benchmark exercise

International audienceExplosion venting is a widely used mitigation solution in the process industry to protect indoor equipment or buildings from excessive internal pressure caused by accidental explosions. However, vented explosions are very complicated to model using computational fluid dynamics (CFD). In the framework of a French working group, the main target of this investigation is to assess the predictive capabilities of five CFD codes used by five different organizations by means of comparison with recent experimental data. On this basis several recommendations for the CFD modelling of vented explosions are suggested

FDOPA-(18F): a PET radiopharmaceutical recently registered for diagnostic use in countries of the European Union

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 summarises the body of evidence that led the French Medicines Agency (AFSSAPS) to grant a marketing authorisation to IASOdopa, a commercial preparation of FDOPA. Brief case reports and figures illustrate the diagnostic performance of FDOPA PET or PET/CT in the different settings that are currently approved in oncology.<br>Tomografia por emissão de positrons (PET) e sua recente atualização PET/CT são ferramentas de diagnóstico muito eficientes para imagens não invasivas de desordens metabólicas ou funcionais em tecido alvo. A utilidade clínica da fluordesoxiglicose-(18F)(FDG) tem sido agora largamente aceita. Recentemente, a utilidade clinica de fluoroDOPA-(18F) ou FDOPA, um aminoácido marcado com o mesmo emissor de pósitron, flúor-18, tem sido avaliado e reconhecido na França e subsequentemente em alguns países da União Européia. FDOPA é o radiofármaco para diagnóstico em PET, o qual tem sido usado por décadas para obtenção de imagens da perda de neurônios dopaminérgicos na doença de Parkinson e, mais recentemente, para identificar inicialmente o estágio e a reavaliação de tumores neuroendócrinos e para a pesquisa da recorrência de glioma viável. O presente artigo resume o conjunto de evidências que levarão a Agência Médica Francesa (AFSSAPS) garantir uma autorização de divulgação da IASOdopa, uma preparação comercial da FDOPA. O relato breve de caso e figuras que ilustram um padrão de imagem de diagnóstico usando FDOPA em PET ou PET/CT em diferentes configurações que são aceitas em oncologia