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2023 Fiscal Year Final Research Report

Radiomics analysis of castration-resistant prostate cancer by DWIBS and SyMRI

Research Project

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Project/Area Number 20K09537
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56030:Urology-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Yoshida Soichiro  東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (80383280)

Co-Investigator(Kenkyū-buntansha) 高原 太郎  東海大学, 工学部, 教授 (50308467)
熊澤 逸夫  東京工業大学, 科学技術創成研究院, 教授 (70186469)
有田 祐起  慶應義塾大学, 医学部(信濃町), 助教 (90815755)
Project Period (FY) 2020-04-01 – 2024-03-31
Keywordsイメージングバイオマーカー / ホルモン感受性前立腺癌 / 前立腺癌 / 全身拡散強調MRI / DWIBS法
Outline of Final Research Achievements

The signal of diffusion-weighted MRI reflect the aggressiveness of metastatic lesions, including bone metastases. The present study demonstrates that quantitative evaluation of whole-body diffusion-weighted MRI signal using the DWIBS technique reflects the aggressiveness of the disease in patients with hormone-sensitive prostate cancer. It was confirmed that the signal volume of metastatic lesions with lower ADC values reflects the poor prognosis of prostate cancer. Whole-body diffusion-weighted MRI not only enables the evaluation of prostate cancer localization and spread, but also suggests that the qualitative evaluation of diffusion-weighted signal is an imaging biomaker that can be used as a prognostic factor to reflect the overall disease status.

Free Research Field

泌尿器科学

Academic Significance and Societal Importance of the Research Achievements

転移性前立腺癌の活動性は同一患者内でも病変により異なる。本研究により、従来困難であった前立腺癌の転移病変ごとの活動性を評価し、DWIBS法を用いた全身拡散強調MRIによる、前立腺癌の転移病変の定量的評価が、予後予測に有用であることが示された。DWIBS法は、前立腺癌の全身の病勢を反映する予後予測因子として使用できるimaging biomakerとなることが示唆された。

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Published: 2025-01-30  

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