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一种磁性纳米粒子及其制备方法和应用
Authors
吴爱国
祖柏儿
+4 more
邹瑞芬
陈天翔
项灵超
马雪华
Publication date
4 July 2017
Publisher
Abstract
本发明涉及一种磁性纳米粒子及其制备方法和应用。具体地,所述磁性纳米粒子具有下组特征:1)所述磁性纳米粒子为铁氧体;2)所述磁性纳米粒子的粒径为0.1-30nm;3)所述磁性纳米粒子的弛豫率r1≥1.2mM-1s-1;4)所述磁性纳米粒子的驰豫率比r2-r1≤3.5且r2-r1≥1.05;5)0.5mM所述磁性纳米粒子的T1加权信号强度≥70。本发明还公开了所述磁性纳米粒子的制备方法和应用。将所述磁性纳米粒子应用于磁共振成像中可获得一种成像性能显著优异、磁敏感性高且T1信号丰富的优质MRI造影剂,可提高其对肿瘤、心脑血管等重大疾病的发现与检出,从而显著降低医学检测和治疗成本
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Last time updated on 22/01/2018