Title
Finding malignant findings from radiological reports using medical attributes and syntactic information.
Abstract
Radiology reports are written primarily in natural language. Automated extraction of malignant findings from narrative reports is an important technique for clinical support or alert generation for physicians. This paper proposes a method for automatically extracting malignant findings from narrative radiological reports written in Japanese. First, sentences are parsed and a medical attribute of each phrase is determined Next, sub-trees related to radiological findings are extracted from a dependency tree using medical attributes. Finally, the malignant findings in each sub free are extracted with their positive or negative assertions, each of which is determined by the multiplication of pos/neg signs along a path in a sub-tree. The recall and precision for the extraction of malignant findings with their positive or negative assertions were 76% and 91% respectively. The experimental results showed the validity of the proposed method for extracting malignant findings with correct assertions.
Year
DOI
Venue
2007
10.3233/978-1-58603-774-1-540
Studies in Health Technology and Informatics
Keywords
Field
DocType
information extraction,radiology report,radiological findings,syntactic analysis,natural language processing
Data mining,Dependency tree,Computer science,Phrase,Natural language processing,Artificial intelligence,Syntax,Information retrieval,Precision and recall,Narrative,Natural language,Parsing,Radiological weapon
Conference
Volume
Issue
ISSN
129
Pt 1
0926-9630
Citations 
PageRank 
References 
2
0.46
1
Authors
6
Name
Order
Citations
PageRank
Takeshi Imai1203.73
Eiji Aramaki237145.89
Masayuki Kajino321.13
Kengo Miyo4245.65
Yuzo Onogi522.15
Kazuhiko Ohe611515.91