Negated Findings Detection in Radiology Reports in Spanish: an Adaptation of NegEx to Spanish
We present SpRadNeg, an adaptation of NegEx to the Spanish language. NegEx is an English rule-based negation detection algorithm. We have tested SpRadNeg with radiology reports, obtaining a precision of 0.87 and a recall of 0.49. We also propose a method to automatize text annotation based on Machine Learning techniques with 0.91 precision and 0.89 recall.