一种改进的组织相似性映射图方法

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相似性映射图在磁共振医学影像处理中有着重要作用,可以应用于信号分析、医学图像分割和组织的局部药代动力学研究等。基于组织相似性图原理,文章通过扩展动态影像序列的概念,提出了一种新的最大相似性度量方法。该方法拓展了组织相似性映射图的应用场景,并能大幅度提高映射图的影像质量。通过16组多回波T2*加权的脑组织动态影像序列对文章算法的有效性进行验证。实验结果表明,与原始影像比较,新方法获得的影像能够将信噪比提高3.8倍至17.4倍。
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