Accuracy verification study of a non-invasive eye positioning system in carbon ion radiotherapy for choroidal melanoma

Accuracy verification study of a non-invasive eye positioning system in carbon ion radiotherapy for choroidal melanoma - Accuracy verification study of eye positioning system in carbon ion radiotherapy

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000061358

Enrollment

Registered

2026-05-01

Start date

2026-05-01

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

Choroidal melanoma

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Patients with choroidal melanoma who have undergone metal marker suturing 2. can follow medical instructions 3. have provided written consent.

Exclusion criteria

Exclusion criteria: Patients who cannot remain still.

Design outcomes

Primary

Measure	Time frame
Displacement between marker matching and iris matching.	—

Secondary

Measure	Time frame
Setup time; feasibility rate of iris matching during treatment planning CT.	—

Countries

Japan

Contacts

Public ContactHirokazu Makishima

National Institutes for Quantum Science and Technology QST Hospital

makishima.hirokazu@qst.go.jp043-206-3306

Outcome results