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首页> 外文期刊>IEEE / ASME Transactions on Mechatronics >Evaluation of Electrorheological Fluid Dampers for Applications at 3-T MRI Environment
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Evaluation of Electrorheological Fluid Dampers for Applications at 3-T MRI Environment

机译：在3T MRI环境中应用的电流变流体阻尼器的评估

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This paper evaluates the use of electrorheological fluids (ERFs) within a magnetic resonance imaging (MRI) environment. ERF is a semiactive variable impedance material, which could be used as an alternative type of resistive force/torque generation or in combination with other actuators as a damper/clutch to modulate the output force/torque of the actuator. In this paper, an ERF damper/brake is introduced and its magnetic resonance (MR) compatibility is examined at a 3-T MR imaging environment by measuring the output performance of the damper and the SNR of the MRI images. The experimental results showed that damper''s resistive force generation while positioned within the MRI is almost the same as that in normal operation. The signal-to-noise investigation was performed both with a phantom and human. The results indicated that the ERF damper did not affect the MRI images when it was operated over 30 cm away from the MRI''s RF coil. We hope that the synthesis and tables presented in this paper can facilitate the choice of ERF brake actuation principle to various applications in an MR environment.
机译：本文评估了在磁共振成像（MRI）环境中电流变流体（ERF）的使用。 ERF是一种半活性可变阻抗材料，可以用作电阻/扭矩产生的替代类型，也可以与其他执行器组合用作阻尼器/离合器，以调节执行器的输出力/扭矩。在本文中，介绍了ERF阻尼器/制动器，并通过测量阻尼器的输出性能和MRI图像的SNR在3-T MR成像环境中检查了其磁共振（MR）兼容性。实验结果表明，当位于MRI内时，阻尼器的阻力产生与正常操作中几乎相同。幻像和人体均进行了信噪比研究。结果表明，当ERF阻尼器在距MRI射频线圈30厘米的范围内操作时，不会影响MRI图像。我们希望本文中介绍的综合内容和表格可以帮助在MR环境中的各种应用中选择ERF制动器致动原理。

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