磁共振如何摆脱液氦的依赖

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                    <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-indent: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">自然界中氦</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">(Helium)</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">资源含量极微，全球氦资源中国仅有</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">0.2%</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">，美国占</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">50%</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">以上。全球</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">80%</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">以上的液氦供应来自美国。氦在卫星飞船发射、导弹武器工业、低温超导研究、半导体生产等方面有重要用途。</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">2007</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">年起，美国将氦核定为战略资源而限制氦产量，导致全球液氦价格持续飙升。</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;"><img class="" data-ratio="0.5750577367205543" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/rb0nb9I2tB5ja06typ8q6jspefMibtnHsJosIKKKVibYFERCMhjJaBwXBq7AVwqN6Oyf8Zm1JoY8nygtU3vMrWyg/640?wx_fmt=jpeg" data-type="jpeg" data-w="866" style="box-sizing: border-box !important;word-wrap: break-word !important;width: auto !important;visibility: visible !important;"  /><br data-filtered="filtered" style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"  /></span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-indent: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">超导磁共振借助液氦带来的绝对零度得以维持超导线圈的超导状态。鉴于全球液氦分布的极端不平衡及液氦的资源性短缺，如何减少液氦使用量、降低对液氦的依赖是各厂家在未来不得不面临的新挑战。</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">&nbsp;</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">&nbsp;</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><img class="" data-ratio="0.6657681940700808" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/rb0nb9I2tB5ja06typ8q6jspefMibtnHsdEZO7AiaicsQ5dWHbzYiaTIAcYc03OCU2SuPEhHfzVJ9ib9FQZ3ibGsnMKQ/640?wx_fmt=jpeg" data-type="jpeg" data-w="371" style="box-sizing: border-box !important;word-wrap: break-word !important;width: auto !important;visibility: visible !important;"  /></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 13.8px;font-size: 11px;box-sizing: border-box !important;word-wrap: break-word !important;">&nbsp;&nbsp;</span></span><span style="max-width: 100%;line-height: 13.8px;font-family: 宋体;font-size: 11px;box-sizing: border-box !important;word-wrap: break-word !important;">小朋友平时喜欢的“氢气球”中填充的就是氦气</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 13.8px;font-family: 宋体;font-size: 11px;box-sizing: border-box !important;word-wrap: break-word !important;"></span>&nbsp;</p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-indent: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">零液氦消耗技术是于</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">2003</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">年西门子最早推出的，目前其他厂家在高端磁共振中也开始采用零液氦消耗技术。实现零液氦消耗，仅有</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">4K</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">冷头是远远不够的，如果没有一款密闭性良好的零液氦挥发磁体，同样无法实现真正的零液氦消耗。这也是为什么有的厂家在低端机型中明明具备了</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">4K</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">冷头、液氦的填充周期还是仅仅标称至</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">3~4</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">年的根本原因。</span></p><table cellspacing="0" cellpadding="0" width="670"><tbody style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><tr style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><td width="507" height="1" style="word-break: break-all;border-width: initial;border-style: initial;border-color: rgb(0, 0, 0);max-width: 100%;background-color: transparent;word-wrap: break-word !important;box-sizing: border-box !important;"><br  /></td><td width="6" height="1" style="word-break: break-all;border-width: initial;border-style: initial;border-color: rgb(0, 0, 0);max-width: 100%;background-color: transparent;word-wrap: break-word !important;box-sizing: border-box !important;"><br  /></td></tr><tr style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><td width="92" style="word-break: break-all;border-width: initial;border-style: initial;border-color: rgb(0, 0, 0);max-width: 100%;background-color: transparent;word-wrap: break-word !important;box-sizing: border-box !important;"><p style="max-width: 100%;min-height: 1em;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><img class="" data-ratio="0.59375" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/rb0nb9I2tB5ja06typ8q6jspefMibtnHsnwjy363OMHQ9JO3TA8QclFrRJic4ibicelUAbJFhuRGvckxugSlvCicgiaw/640?wx_fmt=jpeg" data-type="jpeg" data-w="416" style="box-sizing: border-box !important;word-wrap: break-word !important;width: auto !important;visibility: visible !important;"  /></p></td><td width="5" style="word-break: break-all;border-width: initial;border-style: initial;border-color: rgb(0, 0, 0);max-width: 100%;background-color: transparent;word-wrap: break-word !important;box-sizing: border-box !important;"><br  /></td></tr></tbody></table><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-indent: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">真正零液氦技术，大大降低设备的维护成本。非零蒸发磁体为达到磁体腔内均匀的温度空间，需填充更多的液氦以获得更小的温度梯度。而真正的零液氦消耗技术初始液氦添加量低、填充周期长，甚至极端情况下的液氦补充量也大大减少，可为医院节省大量成本，设备生命周期内可节省</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">100</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">万元甚至更多的后期费用。</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">?&nbsp;&nbsp;</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><img class="" data-ratio="0.20773638968481375" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/rb0nb9I2tB5ja06typ8q6jspefMibtnHsD499XLgQv3hV9zwicykIMpibBYDTMicveBmAl0XqGoYUnpDyahyib0zicqQ/640?wx_fmt=jpeg" data-type="jpeg" data-w="698" style="box-sizing: border-box !important;word-wrap: break-word !important;width: auto !important;visibility: visible !important;"  /></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 13.8px;font-family: 宋体;font-size: 11px;box-sizing: border-box !important;word-wrap: break-word !important;">未来技术创新将全面降低对液氦的依赖，提高系统安全性，降低设备维护费用</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;">&nbsp;</p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);text-indent: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">低液氦填充技术代表了最新的磁体技术，更是设备稳定性和安全性的保证，是未来超导磁共振的发展方向。目前，磁共振在相对低的液氦填充水平就可以实现优异的性能的只有一家，而其他公司也正在研发相关技术。尽管有些公司已经开始在今年的北美放射学年会</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">RSNA</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">上发布了正在研发中的低液氦运行技术</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">Freelium</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">，但是距离获得</span><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">FDA</span><span style="max-width: 100%;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">真正应用于磁共振还有相当长的路要走。但是，我相信，随着磁共振技术的发展，未来的磁共振一定会摆脱对液氦的依赖。</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Arial;box-sizing: border-box !important;word-wrap: break-word !important;">&nbsp;</span></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;text-align: center;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;font-size: 16.3636px;text-transform: uppercase;box-sizing: border-box !important;word-wrap: break-word !important;">·END·</strong></p><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;white-space: normal;text-align: center;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;font-size: 16.3636px;text-transform: uppercase;box-sizing: border-box !important;word-wrap: break-word !important;"><br data-filtered="filtered" style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"  /></strong></p><section class="" style="margin: 0em 0.5em 0.1em;max-width: 100%;font-weight: inherit;white-space: normal;text-align: center;background-color: rgb(255, 255, 255);color: rgb(16, 146, 113);font-size: 1.8em;line-height: 1;box-sizing: border-box !important;word-wrap: break-word !important;"><p style="max-width: 100%;min-height: 1em;box-sizing: border-box !important;word-wrap: break-word !important;"><span data-filtered="filtered" style="max-width: 100%;font-size: 20px;box-sizing: border-box !important;word-wrap: break-word !important;"><strong class="" style="padding-right: 50px;padding-bottom: 3px;padding-left: 50px;max-width: 100%;border-bottom: 1px solid rgb(2, 2, 2);border-top-color: rgb(2, 2, 2);border-right-color: rgb(2, 2, 2);border-left-color: rgb(2, 2, 2);display: block;line-height: 28px;box-sizing: border-box !important;word-wrap: break-word !important;"></strong></span></p></section><section class="" style="margin: 0.5em 1em;max-width: 100%;font-size: 1em;font-weight: inherit;text-align: inherit;white-space: normal;background-color: rgb(255, 255, 255);text-decoration: inherit;line-height: 1;color: rgb(120, 124, 129);box-sizing: border-box !important;word-wrap: break-word !important;"><p style="max-width: 100%;min-height: 1em;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><span class="" style="max-width: 100%;color: rgb(131, 104, 28);font-family: Avenir, sans-serif;line-height: 28px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;">ID:&nbsp;</span><span style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"></span></span></strong><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><span class="" style="max-width: 100%;color: rgb(131, 104, 28);font-family: Avenir, sans-serif;line-height: 28px;box-sizing: border-box !important;word-wrap: break-word !important;"></span></strong></span></p><p style="max-width: 100%;min-height: 1em;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><span class="" style="max-width: 100%;color: rgb(131, 104, 28);font-family: Avenir, sans-serif;line-height: 28px;box-sizing: border-box !important;word-wrap: break-word !important;">大家都在关注的医疗器械维修新媒体平台</span></strong></span></p><p style="max-width: 100%;min-height: 1em;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;color: rgb(131, 104, 28);font-family: Avenir, sans-serif;line-height: 28px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(127, 127, 127);font-size: 12px;box-sizing: border-box !important;word-wrap: break-word !important;"><img class="" data-ratio="1.0136054421768708" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz/A1DicCH9Vl6MoypciaNOibiaxmVLk8eA6ibKL14uWjKsZwrWboQYKTfXqPicXycwL1icfia1pAG0VzlTX3MRR4FPV0ZtZA/640?wx_fmt=jpeg" data-type="jpeg" data-w="147" style="float: none;box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: auto !important;" width="auto"  /></span></strong></p></section>