The Advantages of Abdominal Compression with Shallow Breathing During Left-sided Postmastectomy Radiotherapy by Helical Tomotherapy

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

TCTR

Registry ID

TCTR20201215008

Enrollment

Unknown

Registered

2020-12-15

Start date

2019-12-11

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Left breast cancer Breast radiation Cardiac sparing Abdominal compression Shallow breathing Helical tomotherapy

Interventions

CT simulation with abdominal compression with shallow breathing (ACSB) technique,CT simulation with free breathing (FB) technique

Experimental Procedure/Surgery,Active Comparator Procedure/Surgery

abdominal compression with shallow breathing, free breathing

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: Left breast cancer patients who were planned to have PMRT to chest wall and regional nodal areas.

Exclusion criteria

Exclusion criteria: The patient who cannot do adequate deep inspiration or cannot tolerate with abdominal compression was excluded from our protocol.

Design outcomes

Primary

Measure	Time frame
cardiopulmonary organ volume after completion of treatment planning Wilcoxon Signed Ranks Test,cardiopulmonary organ dose after completion of treatment planning Wilcoxon SiWilcoxon Signed Ranks Test	—

Countries

Thailand

Contacts

Public ContactPitchayponne Klunklin

Department of radiology, Faculty of Medicine, Chiangmai University

pklunklin@gmail.com+66846092813

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026

The Advantages of Abdominal Compression with Shallow Breathing During Left&#45;sided Postmastectomy Radiotherapy by Helical Tomotherapy