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首页> 外文期刊>American Journal of Neuroradiology >Programmable CSF Shunt Valve: In Vitro Assessment of MR Imaging Safety at 3T
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Programmable CSF Shunt Valve: In Vitro Assessment of MR Imaging Safety at 3T

机译:可编程CSF分流阀:3T时MR成像安全性的体外评估

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摘要

SUMMARY: A programmable CSF shunt valve was assessed for magnetic field interactions, heating (transmit-receive body radio-frequency coil; whole-body averaged specific absorption rate, 2.1 W/kg), functional alterations, and artifacts at 3T. The programmable valve showed minor magnetic field interactions and heating was not excessive (+0.8°C). The function of the programmable valve was not altered by multiple exposures to the 3T scanner or from exposure to various MR imaging conditions. Therefore, this implant is safe for a patient undergoing MR imaging at 3T or less when the radiologist follows specific safety guidelines. Artifacts for the programmable valve were relatively large in relation to the size and shape of the valve; this finding may impact the diagnostic use of MR imaging if the area of interest is in proximity to this implant.
机译:摘要:评估了一个可编程的CSF分流阀的磁场相互作用,加热(发射-接收人体射频 线圈;全身平均比吸收率2.1 W / kg), 功能更改以及3T时的伪影。可编程 阀显示出较小的磁场相互作用,并且加热 不过度(+ 0.8°C)。多次暴露于3T扫描仪 或暴露于各种MR成像条件都不会改变可编程<​​sup> 阀的功能。因此,当放射科医生遵循特定的安全指南时, 该植入物对于在 3T或更低的温度下接受MR成像的患者是安全的。 可编程阀的伪像与阀的大小和形状有关的 相对较大;如果感兴趣的区域 靠近该植入物,则此发现可能 影响MR成像的诊断使用。

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  • 来源
    《American Journal of Neuroradiology》 |2006年第3期|00000661-00000665|共5页
  • 作者单位

    Keck School of Medicine, University of Southern California and Institute for Magnetic Resonance Safety, Education, and Research, Los Angeles, Calif;

    Beverly Hills 3T Imaging and Research Center, Beverly Hills, Calif;

    Christoph Miethke GmbH & Co. KG, Potsdam, Federal Republic of Germany;

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