{"entity":{"id":"hitoshi-ishikawa","kind":"person","name":"Hitoshi Ishikawa","aka":[],"tldr":"Radiation specialist who has directed QST Hospital in Chiba, Japan's pioneering carbon ion radiotherapy hospital, since April 2024.","summary":"Hitoshi Ishikawa is Director of QST Hospital, the clinical arm of Japan's National Institutes for Quantum Science and Technology and a centre for carbon ion radiotherapy, a role he has held since April 2024. In his director's message he prioritises validating heavy ion therapy across cancers and extending Japanese insurance coverage, the Quantum Scalpel project to build compact multi-ion accelerators with clinical use planned from 2028, and translating QST research such as radioisotope therapy and PET imaging into practice. The hospital also serves as a designated advanced medical facility for Chiba Prefecture.","asOf":"2026-09-10","links":[{"label":"Source: QST Hospital director's greeting","url":"https://www.qst.go.jp/site/hospital/aboutus-greeting.html"}],"tags":["leadership","clinician-scientist","radiotherapy","particle-therapy"],"related":[],"cancers":[],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":["qst-hospital"],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":["cancer-science"],"dependsOn":[],"notes":[],"role":"Director of QST Hospital","institutionId":"qst-hospital","specialisms":["Radiation oncology","Carbon ion radiotherapy","Heavy ion therapy"],"profiles":[{"label":"QST Hospital director's greeting","url":"https://www.qst.go.jp/site/hospital/aboutus-greeting.html"},{"label":"QST Hospital (English)","url":"https://www.qst.go.jp/site/hospital-en/"}],"papers":[{"title":"Carbon‐ion radiotherapy for urological cancers","journal":"International Journal of Urology","year":2022,"doi":"10.1111/iju.14950"},{"title":"Long‐term clinical outcomes after 12‐fractionated carbon‐ion radiotherapy for localized prostate cancer","journal":"Cancer Science","year":2021,"doi":"10.1111/cas.15019"},{"title":"Long Term Results of Single-Fraction Carbon-Ion Radiotherapy for Non-small Cell Lung Cancer","journal":"Cancers","year":2020,"doi":"10.3390/cancers13010112"}],"orcid":"0000-0002-0046-9787"},"route":"/people/hitoshi-ishikawa/","neighbours":{"institution":[{"id":"qst-hospital","kind":"institution","name":"QST Hospital (National Institutes for Quantum Science and Technology)","route":"/institutions/qst-hospital/"}],"journal":[{"id":"cancer-science","kind":"journal","name":"Cancer science","route":"/journals/cancer-science/"}]}}