Medical database includes both structured and unstructured data. Textual radiology reports are usuallystored in databases unstructured. In this article we propose a method for structuring textual radiology reports. Weextract patterns based on concepts in the textual radiology and use the Naive Bayes classifier to structure thetextual radiology reports with the patterns. The experimental results show that the proposed approach canstructre the radiology reports with a high precision.