110 Vibration measurement of MRI device(O.S.4 Measurement and Sensor II)

概要

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The MRI inspection is a necessary, indispensable inspection on the medical treatment site of today. A small, piezo-electric obstruction was made to stick to the surface of the device to acquire the vibration characteristic the MRI device's operating and the vibration acceleration was measured. The size and the frequency response of the vibration acceleration generated while operating the MRI device were obtained. The vibration acceleration Z axially reached a value that was larger than Y axially in the center part of the gantry and the opening. The value that rises 100dB in the high frequency element is indicated though the frequency response is a low frequency weighted acceleration level for whole body vibration in the low frequency element. The vibration acceleration the MRI device's operating showed the peak up to the frequency from 500 to 2000Hz. The vibration generation under the inspection cannot be disregarded because of making of the MRI device in recent years high magnetic. It is thought that it wants to reflect it in the control of the device vibration in consideration of the characteristic of the vibration acceleration in the future.
一般社団法人日本機械学会の論文
2005-05-31