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<section data-color="rgb(182, 228, 253)" data-custom="rgb(182, 228, 253)"><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section data-color="rgb(182, 228, 253)" data-custom="rgb(182, 228, 253)"><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><section><p><p><img src="image/20201014/86b79d371e9862b01189f0252a03b2cd_1.jpg" /></p></p></section><section><section><span><strong></strong></span></section><p><span>医疗器械媒体报道先锋</span></p><p><span>分享专业医疗器械知识</span></p></section><section><section><section><span>关注</span></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section><section><br /></section><section><span>据俄罗斯卫星网日前报道,瑞典卡罗林斯卡学院的医学研究人员将回波平面成像和磁共振成像扫描合并为一种叫“EPI-mix”的新型成像方法,此方法将可把磁共振扫描的时间缩短到一分钟,这一技术引起了业内关注,据悉该实验得到了GE公司的资助。<br /></span></section><section><br /></section><section data-support="96编辑器" data-style-id="22631"><section><section><p><strong>01</strong></p></section><section><p><span><strong>MRI成像速度困扰业界多年</strong></span></p></section></section></section><section><br /></section><section><span>磁共振成像,英文全称:MagneticResonance Imaging。<span>是最常见的影像诊断方式之一。临床应用中,磁共振扫描在中枢神经系统、肌骨系统、体部等部位的诊断上具有显著优势。</span></span></section><section><span><br /></span></section><section><span><span>相比CT和X光扫描,人体单个部位的</span><strong><span>磁共振扫描往往需要更长时间</span></strong><span>。<span>以颅脑磁共振扫描为例</span>,<span>一次完整的颅脑扫描耗时甚至长达半小时。常见的腹部等部位的扫描也需要约15分钟至20分钟。不仅耗费患者就医时间,也增加了患者的不适体验。</span></span></span></section><section><span><br /></span></section><section><span>此外,成像速度慢还制约了磁共振检查的适应症范围。如腹部、盆腔等器官的磁共振检查容易因人体呼吸运动造成伪影,导致图像不清晰,这极大影响了医生的诊断精准度。因此很多相关企业都在寻找加速磁共振检查速度的方式。</span></section><section><br /></section><section><p><img src="image/20201014/1ca59ff7fc0795e748891cea081f40e7_2.jpg" /></p></section><section><br /></section><section data-support="96编辑器" data-style-id="22631"><section><section><p><strong>02</strong></p></section><section><p><span><strong>联影ACS VS EPI-mix</strong></span></p></section></section></section><section><br /></section><section><span>除了文首瑞典卡罗林斯卡学院发布的“EPI-mix”成像外,近日联影医疗也在不久前发布了全球首款“秒级”磁共振加速技术——ACS智能光梭成像,那么相比之下,两者有何优劣?我们来做一个简单的对比。</span></section><section><span><br /></span></section><section><strong><span>联影ACS智能光梭成像</span></strong></section><section><span><br /></span></section><section><span>这一技术将人体全身各部位完整序列成像时间从数十分钟缩短到<strong>100秒内</strong>!联影ACS智能光梭成像采用了两大突破性技术:</span><strong><span>uAI 人工智能</span></strong><span>与<strong>uCS光梭成像</strong>。</span></section><section><span><br /></span></section><section><span><p><img src="image/20201014/900fba20b65a6bbd87668a6ffbf2d755_3.jpg" /></p></span></section><section><span><br /></span></section><section><span>uAI人工智能区别于业内所有基于图像域的AI辅助技术,采取业界首创<strong>基于K空间优化欠采样技术</strong>,而uCS光梭成像则融合迄今为止所有主流磁共振成像加速技术(包含压缩感知、并行成像、半傅里叶等技术),uAI与uCS光梭成像技术共同造就ACS智能光梭成像的独特优势:<strong>在极速扫描的同时呈现高保真图像质量</strong>。</span></section><section><br /></section><section><strong><span>EPI-mix成像技术</span></strong></section><section><br /></section><section><span>利用EPI-mix技术,核磁共振扫描只需要<strong>70秒</strong>。该技术基于多中心回波平面成像(EPI),创建11个动态构建块。两个EPI读出模块在整个序列中被重复使用,并被其他模块预加以形成所需的MR对比。由于每个对比度的单次发射性质,脉冲序列对运动具有鲁棒性。</span></section><section><br /></section><section><span>尽管信噪比(SNR)和分辨率较低,但1分钟的多中心EPI数据显示与患者常规诊断扫描的一致性。放射学专家安娜·法尔克·德尔加多表示,尽管与先前耗时长的核磁共振成像方法的扫描结果相比,新型技术的成像有些不清楚,但医生依旧可以利用它们进行早期的检测和诊断。</span></section><section><span><br /></span></section><section><video width="100%" height="580" controls="controls"><source src="http://mpvideo.qpic.cn/0bf2yiabaaaateaolozmsnpvbqwdcdbaaeaa.f10002.mp4?dis_k=21cabd5c929ad8ebde186d07e0e5bb71&dis_t=1602645884" type="video/mp4"></source></video></section><section><br /></section><section><strong><span>对比分析:</span></strong><span>从公布的数据上可以看出,在扫描的绝对速度方面,EPI-mix成像技术明显优于联影ACS智能光梭成像技术,但是磁共振扫描毕竟不是真的在赛跑,EPI-mix虽然成像速度极快,但同时导致了无法得到清晰的影像,因此应用场和实用性会大打折扣鉴于该技术刚刚发布,可以期待一下未来的发展。</span></section><section><br /></section><section><span>相比之下,联影ACS智能光梭成像技术虽然在绝对成像速度上略逊一筹,但综合性能更加优秀,产品完成度远高于EPI-mix,能够实现在极速扫描的同时呈现高保真图像质量,应用范围更广。</span></section><section><br /></section><section><span>关于EPI-mix的更多研究报告,可以点击下方<span>阅读原文</span>获取。提取码“”缩写:qxzj</span></section><section><br /><span></span></section><section><p><img 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