Dose difference between CT scan for brachytherapy planning and CT scan immediately prior to treatment, comparing in-room CT scan with CT scan outside brachytherapy theater.

Brachytherapy dose changes: comparing in-room and out-room image-guided brachytherapy. A randomized study

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

TCTR

Registry ID

TCTR20200605008

Enrollment

Registered

2020-06-05

Start date

2020-03-09

Completion date

Unknown

Last updated

2026-03-30

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

Conditions

Uterine cervical cancer patient with definitive treatment with radiotherapy and brachytherapy brachytherapy in-room CT dose different

Interventions

Patient who&#39

ve inserted brachytherapy applicator will get CT scan that is in brachytherapy loading room for treatment planning and remain in CT table. After treatment planning is done&#44

she will get CT scan again.,Patient who&#39

ve inserted brachytherapy applicator will get CT scan for treatment planning and move out from loading room. After treatment planning is done&#44

she will move back to brachytherapy loading room and perform CT scan again.

Active Comparator Procedure/Surgery,Active Comparator Procedure/Surgery

In&#45

room CT scan brachytherapy,Out&#45

room CT scan brachytherapy

Eligibility

Sex/Gender

Female

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1.Early or locally advanced cervical cancer stages IA1 to IVA. 2.Age 18 - 70-year-old 3.Treatment plan to includes BT. 4.Pathological report that confirm of cervical cancer. 5.Zubrod Performance Status 0-2. 6.No metastatic disease outside pelvis except to para-aortic nodes. 7.No prior abdominal surgery. 8.No previous chemotherapy, pelvic radiotherapy or brachytherapy. 9.No previous or simultaneous malignancies. 10.Patients must sign a study-specific informed consent form prior to study entry.

Exclusion criteria

Exclusion criteria: 1.Pregnant and breast-feeding patients are ineligible. 2.Claustrophobia or any significant medical contraindications that cannot comply with BT protocol.

Design outcomes

Primary

Measure	Time frame
Dose difference of organ at risk At the end of each intervention Treatment planning	—

Secondary

Measure	Time frame
Correlation of OARs volume and dose At the end of each intervention Treatment planning	—

Countries

Thailand

Contacts

Public ContactPooriwat Muangwong

Faculty of Medicine, Chiang Mai University

pooriwat.m@cmu.ac.th053935450

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Apr 4, 2026