Identification of proton radiation fields for malignant hepatic tumors using SPIO-MRI

Identification of proton radiation fields for malignant hepatic tumors using SPIO-MRI - Identification of proton radiation fields using SPIO-MRI

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000016666

Enrollment

Registered

2015-03-01

Start date

2015-03-09

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

Malignant hepatic tumors

Interventions

SPIO-MRI

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Patients having proton radiation plan for malignant liver tumor 2. Patients who obtained informed consent The first 5 cases satisfy following items additionally; 3. Inpatient 4. Patients irradiated 6.6Gy/day 5. Tumor size < 5cm

Exclusion criteria

Exclusion criteria: 1. Contraindication for CT 2. Contraindication for MRI 3. Contraindication for SPIO 4. Patients previously having hepatic radiation 5. Child-Pugh class B or C 6. Portal vein tumor thrombus extends to segmantal branch

Design outcomes

Primary

Measure	Time frame
1. Possibility to identify proton radiation fields 2. Measurement of signal intensities 3. Comparison with CT	—

Countries

Japan

Contacts

Public ContactHiyama Takashi

University of Tsukuba Hospital Diagnostic radiology

med-tak@hotmail.com029-853-3205

Outcome results

None listed

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