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Medical Case-Based Retrieval of Patient Records Using the RadLex Hierarchical Lexicon

机译:使用RadLex分层词典检索基于医疗案例的患者病历

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摘要

We present a new method for the retrieval radiological cases from a database of clinical cases described by terms from the RadLex lexicon. The input is an database of cases and a query consisting of the patient volumetric scan, a user-defined region of interest in it, and a list of RadLex from the radiological report. The output is list of the most relevant cases from the database in decreasing order. Our method uses the RadLex terms and their hierarchical representation to define a similarity metric between terms based on their relative location in the hierarchy. For this purpose, we develop the Augmented RadLex Graph, a data structure that augments the RadLex hierarchy with links derived from the terms in the case reports, and a search algorithm that ranks case similarity based on the link distance between the terms in the graph. Our method was evaluated in the VISCERAL Retrieval Benchmark Challenge on 8 queries and a database of 1,813 cases. It ranked first in 6 out of the 8 cases tested.
机译:我们提出了一种从RadLex词典中的术语描述的临床病例数据库中检索放射病例的新方法。输入是病例数据库和查询,包括患者体积扫描,其中的用户定义兴趣区域以及放射学报告中的RadLex列表。输出是数据库中最相关的案例的列表,以降序排列。我们的方法使用RadLex术语及其层次表示形式,根据术语在层次结构中的相对位置来定义术语之间的相似性度量。为此,我们开发了增强型RadLex图,这是一种通过从案例报告中的术语导出的链接来扩展RadLex层次结构的数据结构,以及一种搜索算法,该算法根据图中各术语之间的链接距离对案例相似性进行排名。我们的方法在VISCERAL检索基准挑战赛中对8个查询和1,813个案例的数据库进行了评估。在测试的8个案例中,它排名第6。

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  • 会议地点 Vienna(AT)
  • 作者单位

    The Rachel and Selim Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel;

    The Rachel and Selim Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel;

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  • 原文格式 PDF
  • 正文语种 eng
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