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首页> 外文期刊>Journal of vestibular research: equilibrium and orientation >Derealization and motion-perception related to repeated exposure to 3T Magnetic Resonance Image scanner in healthy adults
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Derealization and motion-perception related to repeated exposure to 3T Magnetic Resonance Image scanner in healthy adults

机译：与健康成人的3T磁共振图像扫描仪重复接触的致命和运动感知

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BACKGROUND: Magnetic Resonance Imaging (MRI) scanning can induce psychological effects. No studies have investigated the role of magnetic vestibular stimulation (MVS) in 3TMRI scanner-induced psychological reactions. OBJECTIVE: To assess depersonalization/derealization (DD), state anxiety and motion-perception in a 3TMRI scanner, acutely and long-term. PARTICIPANTS: 48 healthcare professionals and students were included, after preliminary rejection of claustrophobes and neuro-otology and psychiatry assessments. PROCEDURES: Participants completed questionnaires on personal habits, dissociation, anxiety/depression and motion sickness susceptibility. Validated DD and state anxiety questionnaires were administered before and after magnetic exposure twice, entering the bore head and feet first in random order, one week apart. During the following week, dizziness/disorientation was reported daily. One month later, 11 subjects repeated the procedure to assess reproducibility. RESULTS: Considerable individual susceptibility was observed, circa 40% of the subjects reported self-motion perception related to the exposure, with variable increase on DD symptoms. Multivariate analysis showed that DD scores after any exposure were influenced by entering the bore “feet first”, motion-perception, and the mean sleep hours/week (MANCOVA, R?=?0.58, p?=?0.00001). There was no clear effect of scanner exposure on state anxiety, which was related to trait anxiey but not to DD scores. During repeated exposures, about half of all subjects re-entering the scan reported motion-perception, but DD or anxiety symptoms were not consistent. CONCLUSION: Psychological effects during 3TMRI scanning result from multiple, interacting factors, including novelty of the procedure (first-exposure effect), motion-perception due to MVS, head/body orientation, sleeping habits and individual susceptibility. Forewarning subjects of these predisposing factors may increase tolerance to MRI scanning.
机译：背景：磁共振成像（MRI）扫描可引起心理效应。没有研究调查磁前庭刺激（MVS）在3TMRI扫描仪诱发的心理反应中的作用。目的：在3TMRI扫描仪上对去人格化/去人格化（DD）、状态焦虑和运动知觉进行急性和长期评估。参与者：48名医护人员和学生在初步拒绝幽闭恐怖症和神经耳科及精神病学评估后被纳入研究。程序：参与者完成关于个人习惯、分离、焦虑/抑郁和晕车易感性的问卷调查。经验证的DD和状态焦虑问卷在磁暴露前和磁暴露后进行两次，以随机顺序首先进入孔头部和脚，间隔一周。在接下来的一周里，每天都有头晕/定向障碍的报告。一个月后，11名受试者重复该程序以评估再现性。结果：观察到相当大的个体易感性，约40%的受试者报告了与暴露相关的自我运动知觉，DD症状有不同程度的增加。多变量分析显示，任何暴露后的DD评分都会受到“先入孔”的影响，运动知觉和每周平均睡眠时间（MANCOVA，R？=？0.58，p？=？0.00001）。扫描仪暴露对状态焦虑没有明显影响，状态焦虑与特质焦虑有关，但与DD分数无关。在重复暴露期间，大约一半重新进入扫描的受试者报告了运动知觉，但DD或焦虑症状并不一致。结论：3TMRI扫描过程中的心理影响是多个相互作用的因素造成的，包括程序的新颖性（首次暴露效应）、MVS引起的运动感知、头部/身体方位、睡眠习惯和个体易感性。预先警告受试者这些易感因素可能会增加他们对MRI扫描的耐受性。

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