A study 1 for evaluation of inter-fractional changes in internal organs and its dose distributions for carbon ion radiotherapy

A study 1 for evaluation of inter-fractional changes in internal organs and its dose distributions for carbon ion radiotherapy - Evaluation 1 of influence for inter-fractional changes for carbon ion radiotherapy

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000027125

Enrollment

Registered

2017-05-01

Start date

2017-05-01

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

Lung or Liver cancer

Interventions

Four times of CT acquisitions and one time of 4 dimensional CT acquisition

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: The patient has a liver or lung cancer, and he/she will receive carbon ion radiotherapy. The treatment fractions is four. ECOG Perfomance Status (PS)=0-2. Over 20 years. It is possible to get his/her agreement of this study by text.

Exclusion criteria

Exclusion criteria: Not emergency irradiation case. Inappropriate case determined by doctor.

Design outcomes

Primary

Measure	Time frame
To evaluate tumor movement using CT images acquired on the treatment days and the treatment planning CT images. To recalculate the CTV coverage (V95%) on the current CT images and compare with the CTV coverage on the treatment planning.	—

Countries

Japan

Contacts

Public ContactTatsuya Ohno

Gunma University Heavy Ion Medical Center

tohno@gunma-u.ac.jp027-220-8378

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026