Whole-body MRI: comprehensive evaluation on a 48-channel 3T MRI system in less than 40 minutes. Preliminary results

Hernandes, Mateus de Andrade; Semelka, Richard C.; Júnior, Jorge Elias; Bamrungchart, Saraporn; Dale, Brian M.; Stallings, Clifton

doi:10.1590/s0100-39842012000600007

Cited by 7 publications

(4 citation statements)

References 33 publications

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“…Greater intrinsic soft tissue contrast resolution in association with non-exposure to ionizing radiation have made MRI an excellent choice for screening purposes ( 8 ) , as well as in the evaluation of joints. MRA has been utilized for a detailed evaluation of internal joint derangements because of its capacity to describe small anatomical details, increasing the diagnostic accuracy.…”

Section: Discussionmentioning

confidence: 99%

Effects of iodinated contrast agent, xylocaine and gadolinium concentration on the signal emitted in magnetic resonance arthrography: a samples study

Silva¹,

Costa

Pinho

et al. 2015

Radiol Bras

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ObjectiveTo investigate the effects of dilution of paramagnetic contrast agent with iodinated contrast and xylocaine on the signal intensity during magnetic resonance arthrography, and to improve the paramagnetic contrast agent concentration utilized in this imaging modality.Materials and MethodsSamples specially prepared for the study with three different concentrations of paramagnetic contrast agent diluted in saline, iodinated contrast agent and xylocaine were imaged with fast spin echo T1-weighted sequences with fat saturation. The samples were placed into flasks and graphical analysis of the signal intensity was performed as a function of the paramagnetic contrast concentration.ResultsAs compared with samples of equal concentrations diluted only with saline, the authors have observed an average signal intensity decrease of 20.67% for iodinated contrast agent, and of 28.34% for xylocaine. However, the increased gadolinium concentration in the samples caused decrease in signal intensity with all the dilutions.ConclusionMinimizing the use of iodinated contrast media and xylocaine and/or the use of a gadolinium concentration of 2.5 mmol/L diluted in saline will improve the sensitivity of magnetic resonance arthrography.

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Section: Discussionmentioning

confidence: 99%

Effects of iodinated contrast agent, xylocaine and gadolinium concentration on the signal emitted in magnetic resonance arthrography: a samples study

Silva¹,

Costa

Pinho

et al. 2015

Radiol Bras

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“…Na literatura consultada Simona et al (2007) e Hernandes et al (2012) inclui o significado de extravasamento como sendo a administração impensada de droga vesicante nos tecidos circundantes, ao oposto da via vascular desejada. Drogas vesicantes são aquelas capazes de causar dano tecidual quando injetadas nas estruturas adjacentes ao vaso sanguíneo.…”

Section: Reações Anafilactóides Ou Idiossincráticasunclassified

“…A informação tecnológica dos meios de contraste e seus resultados bem como a confiabilidade para agir em casos de emergência são essenciais para a ocorrência na realização de exames por imagem (HERNANDES et al, 2012).…”

Section: Medidas Preventivasunclassified

O meio de contraste iodado utilizado para ressonância magnética

Fabichacki¹,

Carvalho²

2017

Engineering Sciences

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Os meios de contraste radiológicos são compostos e introduzidos no organismo por diversas vias, que permitem incluir o significado das imagens radiográficas, possibilitando, a aquisição de imagens de alta definição e com isso, máxima perfeição em exames em análise por imagem. Este estudo tem como objetivo descrever os efeitos adversos iodado na utilização da RM. Assim, apresenta-se uma revisão bibliográfica com ênfase na apresentação ao contraste iodado e nas reações adversas, ampliando assim, uma pesquisa descritiva-exploratório, com análise qualitativa referente busca online. Os resultados encontrados mostram que na maioria das vezes pode incidir de um paciente que usa contraste iodado evolver bem, sem problemas e as reações quando aparecem tendem a ser leves e passíveis de controle pelo médico. As evidências em estudos mais frequentes são as chamadas reações vaso vagais, em geral sem acuidade, como vômitos, náuseas e palidez. As reações pseudoalérgicas podem gerar coceira na pele ou evolver com aparecimento de rinite, urticária, conjuntivite, edema de laringe, angioedema, broncoespasmo, diminuição da pressão arterial e síncope. Diante disso, a administração de meio de contrate iodado e a segurança do paciente na realização da RM é importante, principalmente, no que se refere as equipes de saúde dos centros de diagnóstico tendo um critério para prevenção das reações aos contrastes e ficarem atentas aos fatores de risco presentes, visando minimizar a ocorrência de reações adversas.

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“…Its clinical usage in full-body examination for disease in patients was limited previously because of the long scanning duration and poor image quality. With the advent in high field MRI and parallel imaging techniques, the image quality and scanning duration have been improved substantially (1)(2)(3)(4), allowing for better spatial resolution and diagnostic accuracy compared to traditional PET/CT (5).…”

Section: Introductionmentioning

confidence: 99%

Whole body MRI of the non-human primate using a clinical 3T scanner: initial experiences

Zhang

2017

Quant. Imaging Med. Surg.

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With the advent of parallel imaging MRI techniques, whole-body MRI is being increasingly used in clinical diagnosis. However, its application in preclinical research using large animals remains very limited. In the present study, the whole-body MRI techniques for adult macaque monkeys were explored using a conventional clinic 3T scanner. The T1, T2 anatomical images, and MR angiography of adult macaque whole bodies were illustrated. The preliminary results suggest whole-body MRI can be a robust tool to examine multiple organs of non-human primate (NHP) models from head to toe non-invasively and simultaneously using a conventional clinical setting. As NHPs are intensely used in biomedical research such as HIV/AIDS and vaccine discovery, whole body MRI techniques can have a wide range of applications in translational research using NHPs.

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Whole-body MRI: comprehensive evaluation on a 48-channel 3T MRI system in less than 40 minutes. Preliminary results

Cited by 7 publications

References 33 publications

Effects of iodinated contrast agent, xylocaine and gadolinium concentration on the signal emitted in magnetic resonance arthrography: a samples study

Effects of iodinated contrast agent, xylocaine and gadolinium concentration on the signal emitted in magnetic resonance arthrography: a samples study

O meio de contraste iodado utilizado para ressonância magnética

Whole body MRI of the non-human primate using a clinical 3T scanner: initial experiences

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