The Fine-Tuned Large Language Model for Extracting the Progressive Bone Metastasis from Unstructured Radiology Reports.

Early detection of patients with impending bone metastasis is crucial for prognosis improvement. This study aimed to investigate the feasibility of a fine-tuned, locally run large language model (LLM) in extracting patients with bone metastasis in unstructured Japanese radiology report and to compar...

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Published in:Journal of Imaging Informatics in Medicine Vol. 38; no. 2; pp. 865 - 873
Main Authors: Kanemaru, Noriko, Yasaka, Koichiro, Fujita, Nana, Kanzawa, Jun, Abe, Osamu
Format: research tables/charts Journal Article
Published: Springer Nature Apr2025
Online Access:View this record in EBSCOhost
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      dt: Apr2025
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      pub: Springer Nature
      place: New York, New York
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        10.1007/s10278-024-01242-3
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        atl: The Fine-Tuned Large Language Model for Extracting the Progressive Bone Metastasis from Unstructured Radiology Reports.
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        au:
          Kanemaru, Noriko
          Yasaka, Koichiro
          Fujita, Nana
          Kanzawa, Jun
          Abe, Osamu
        affil: https://ror.org/057zh3y96 Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, 113-8655, Tokyo, Japan
      sug:
        subj:
          Natural Language Processing
          Bone Metastases
          Reports Japan
          Human
          Funding Source
          Japan
          Pilot Studies
          Retrospective Design
          Record Review
          Sensitivity and Specificity
          Deep Learning
          Data Analysis Software
          Descriptive Statistics
          Chi Square Test
          Male
          Female
          Male
          Female
      ab: Early detection of patients with impending bone metastasis is crucial for prognosis improvement. This study aimed to investigate the feasibility of a fine-tuned, locally run large language model (LLM) in extracting patients with bone metastasis in unstructured Japanese radiology report and to compare its performance with manual annotation. This retrospective study included patients with "metastasis" in radiological reports (April 2018–January 2019, August–May 2022, and April–December 2023 for training, validation, and test datasets of 9559, 1498, and 7399 patients, respectively). Radiologists reviewed the clinical indication and diagnosis sections of the radiological report (used as input data) and classified them into groups 0 (no bone metastasis), 1 (progressive bone metastasis), and 2 (stable or decreased bone metastasis). The data for group 0 was under-sampled in training and test datasets due to group imbalance. The best-performing model from the validation set was subsequently tested using the testing dataset. Two additional radiologists (readers 1 and 2) were involved in classifying radiological reports within the test dataset for testing purposes. The fine-tuned LLM, reader 1, and reader 2 demonstrated an accuracy of 0.979, 0.996, and 0.993, sensitivity for groups 0/1/2 of 0.988/0.947/0.943, 1.000/1.000/0.966, and 1.000/0.982/0.954, and time required for classification (s) of 105, 2312, and 3094 in under-sampled test dataset (n = 711), respectively. Fine-tuned LLM extracted patients with bone metastasis, demonstrating satisfactory performance that was comparable to or slightly lower than manual annotation by radiologists in a noticeably shorter time.
      pubtype: Academic Journal
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        tables/charts
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      ougenre: Article
    language: English
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