A Study on Optimizing Setup Margins in Carbon Ion Radiotherapy

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-jRCT1030230122

Enrollment

750

Registered

2023-06-08

Start date

2023-06-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lung cancer, prostate cancer, liver cancer, breast cancer, kidney cancer

Interventions

None listed

Eligibility

Inclusion criteria

Inclusion criteria: Patients treated with Carbon-ion radiotherapy for lung, prostate, liver, breast, and kidney at QST Hospital between March 2020 and February 2023 after gold marker insertion are eligible.

Exclusion criteria

Exclusion criteria: 1. Patients whose gold marker location information is not stored. 2. Patients who have requested to refuse the use of their information for this study.

Design outcomes

Primary

Measure	Time frame
Systematically organize the deviations and trends in marker positions for each treated organ, pre-treatment, and irradiated body position, and determine the setup margin for each condition.	—

Contacts

Public ContactNoriyuki Okonogi

National Institutes for Quantum Science and Technology

okonogi.noriyuki@qst.go.jp+81-43-206-3306

Outcome results