研究者業績

生坂 政臣

イクサカ マサトミ  (Masatomi Ikusaka)

基本情報

所属
千葉大学 医学部附属病院 教授
学位
医学博士(1989年7月 東京女子医科大学)

研究者番号
20308406
J-GLOBAL ID
200901079008918205
researchmap会員ID
5000067448

研究キーワード

 2

学歴

 1

論文

 194
  • Osamu Nomura, Hiroyuki Komatsu, Yasushi Matsuyama, Takeshi Onoue, Masatomi Ikusaka, Hitoaki Okazaki, Yasuhiko Konishi
    Medical teacher 46(sup1) S61-S66 2024年9月  
    BACKGROUND: Discrepancies existed between the medical knowledge sections of the Model Core Curriculum for Medical Education (MCC) and the Guidelines for the National Examination for Medical Practitioners (GNEMP) in Japan. These discrepancies have been one of the underlying factors hindering the development of learner-centered medical education in the country. The project team responsible for the 'Problem-Solving' section of the MCC aimed to address discrepancies between the disease lists in the MCC and the GNEMP. METHOD: We refined the disease list for the 2022 revision of the MCC using a three-phase process: (a) procedure development, (b) selection, and (c) adjudication. First, we developed a scoring system for sifting and prioritizing diseases in the GNEMP, selecting those that met our scoring criteria. An expert adjudication panel then finalized the list of diseases through discussion. RESULTS: Among the 1,456 diseases identified in the GNEMP, 781 met the selection criteria. The adjudication panel selected 56 of these diseases to be newly added to the 2022 MCC, resulting in a total of 691 diseases. CONCLUSIONS: The list of diseases defined as required medical knowledge in the MCC was finalized through dialogue among medical education stakeholders, effectively minimizing discrepancies between the MCC and GNEMP.
  • Daiki Yokokawa, Takanori Uehara, Yoshiyuki Ohira, Kazutaka Noda, Naofumi Higuchi, Eigo Kikuchi, Kazuaki Enatsu, Masatomi Ikusaka
    Cureus 16(6) e61641 2024年6月  
    This study tests whether comprehensively gathering information from medical records is useful for developing clinical decision support systems using Bayes' theorem. Using a single-center cross-sectional study, we retrospectively extracted medical records of 270 patients aged ≥16 years who visited the emergency room at the Tokyo Metropolitan Tama Medical Center with a chief complaint of experiencing headaches. The medical records of cases were analyzed in this study. We manually extracted diagnoses, unique keywords, and annotated keywords, classifying them as either positive or negative. Cross tables were created, and the proportion of combinations for which the likelihood ratios could be calculated was evaluated. Probability functions for the appearance of new unique keywords were modeled, and theoretical values were calculated. We extracted 623 unique keywords, 26 diagnoses, and 6,904 annotated keywords. Likelihood ratios could be calculated only for 276 combinations (1.70%), of which 24 (0.15%) exhibited significant differences. The power function+constant was the best fit for new unique keywords. The increase in the number of combinations after increasing the number of cases indicated that while it is theoretically possible to comprehensively gather information from medical records in this way, doing so presents difficulties related to human costs. It also does not necessarily solve the fundamental issues with medical informatics or with developing clinical decision support systems. Therefore, we recommend using methods other than comprehensive information gathering with Bayes' theorem as the classifier to develop such systems.
  • Yasutaka Yanagita, Daiki Yokokawa, Fumitoshi Fukuzawa, Shun Uchida, Takanori Uehara, Masatomi Ikusaka
    BMC medical education 24(1) 536-536 2024年5月15日  
    BACKGROUND: An illness script is a specific script format geared to represent patient-oriented clinical knowledge organized around enabling conditions, faults (i.e., pathophysiological process), and consequences. Generative artificial intelligence (AI) stands out as an educational aid in continuing medical education. The effortless creation of a typical illness script by generative AI could help the comprehension of key features of diseases and increase diagnostic accuracy. No systematic summary of specific examples of illness scripts has been reported since illness scripts are unique to each physician. OBJECTIVE: This study investigated whether generative AI can generate illness scripts. METHODS: We utilized ChatGPT-4, a generative AI, to create illness scripts for 184 diseases based on the diseases and conditions integral to the National Model Core Curriculum in Japan for undergraduate medical education (2022 revised edition) and primary care specialist training in Japan. Three physicians applied a three-tier grading scale: "A" denotes that the content of each disease's illness script proves sufficient for training medical students, "B" denotes that it is partially lacking but acceptable, and "C" denotes that it is deficient in multiple respects. RESULTS: By leveraging ChatGPT-4, we successfully generated each component of the illness script for 184 diseases without any omission. The illness scripts received "A," "B," and "C" ratings of 56.0% (103/184), 28.3% (52/184), and 15.8% (29/184), respectively. CONCLUSION: Useful illness scripts were seamlessly and instantaneously created using ChatGPT-4 by employing prompts appropriate for medical students. The technology-driven illness script is a valuable tool for introducing medical students to key features of diseases.
  • Yasutaka Yanagita, Daiki Yokokawa, Shun Uchida, Yu Li, Takanori Uehara, Masatomi Ikusaka
    2024年3月2日  
  • Daiki Yokokawa, Yasutaka Yanagita, Yu Li, Shiho Yamashita, Kiyoshi Shikino, Kazutaka Noda, Tomoko Tsukamoto, Takanori Uehara, Masatomi Ikusaka
    Diagnosis (Berlin, Germany) 2024年2月23日  

MISC

 654

書籍等出版物

 45

講演・口頭発表等

 203

共同研究・競争的資金等の研究課題

 18

学術貢献活動

 4

社会貢献活動

 10

メディア報道

 93