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RecruitingNCT05483712Updated May 22, 2024

Brass Mesh Bolus in Rotational Post-Mastectomy Radiation Therapy

An interventional study of Brass Mesh Bolus in Breast Cancer, sponsored by Nova Scotia Cancer Centre. Recruiting at 1 site in Canada. Per ClinicalTrials.gov, last updated 2024-05-22.

Sponsored by Nova Scotia Cancer Centre · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Nov 2024, 1 year 10 months ago, but the record still lists the study as recruiting.
  • Started Jan 2023; still recruiting 3 years 8 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Sex
All
01

Study summary

The hypothesis is that the daily use of brass mesh bolus achieves a comparable dose to every-other-day use of Superflab bolus (current standard of care) in chest wall post-mastectomy patients treated with rotational 6 MV photon delivery.

Read the detailed description

Intervention: During a standard-of-care 15 fraction radiotherapy treatment, a brass mesh bolus will be used for a single fraction. Small in-vivo dosimeters will be used for three treatment fractions to measure and compare skin doses for quantification purposes.

Comparator: Superflab and no bolus applied as per the treating physician's practice, typically on alternate days. The intervention and comparator tools are to be utilized on each participant.

Primary outcome

  1. To determine the skin dose under brass mesh bolus and compare it with the skin dose under Superflab bolus (current standard of care).
  2. To determine the number of fractions for which brass mesh bolus should be used to achieve an acceptable skin dose.
02

Conditions studied

  • Breast Cancer

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Keywords

  • Breast Cancer
  • Radiation Therapy
  • Brass Mesh
  • Bolus
  • Skin Dose
03

In context

Breast Neoplasms

12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.

This study's planned enrollment of 20 is below the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.

Browse Breast Neoplasms studies →

Lead sponsor

Nova Scotia Cancer Centre is the lead sponsor of 4 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Women undergoing rotational chest wall radiotherapy following mastectomy for breast cancer treatment who would utilize Superflab bolus on some, but not all, days of radiotherapy treatment.

Exclusion criteria

Exclusion Criteria:

Patients who require daily bolus due to skin involvement or other high-risk features requiring a high skin dose will not be included.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    Post-Mastectomy Radiation Therapy Patients

    Any patient who is going through radiation to their chest wall following mastectomy using a rotational delivery technique and 6 MV, and uses Superflab bolus for some but not all fractions of radiotherapy

    Device: Brass Mesh Bolus

Interventions

  • DeviceBrass Mesh Bolus

    During a standard-of-care 15 fraction radiotherapy treatment, a brass mesh bolus will be used for a single fraction. Small in-vivo dosimeters will be used for three treatment fractions to measure and compare skin doses for quantification purposes.

06

What researchers measure

Primary outcomes

  1. Skin Dose Enhancement Under Brass Mesh Bolus

    During days one, two, and three of radiation therapy, patients on this study utilize no-bolus, 5-mm thick Superflab bolus, and brass mesh bolus, respectively. Each day, nine in-vivo dosimeters (OSLDs) will be placed on patient skin to sample the skin dose in cGy. As a result, for each patient on this study, skin dose enhancement of brass mesh compared with no-bolus can be related to that of Superflab bolus. At the end of the study, the average and range of skin dose enhancement under brass mesh bolus for a sample size of twenty patients will be reported.

    Time frame: through study completion, an average of 1 year

07

Study locations

1 of 1 sites recruiting
  • Nova Scotia Health Authority
    Halifax, Nova Scotia B3H 1V7, Canada
    Recruiting
08

References and documents

Individual participant data

Plan to share: Yes

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 22, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05483712
Lead sponsor
Nova Scotia Cancer Centre
Collaborators
Hannah Dahn
Responsible party
Thalat Monajemi (Medical Physicist, Nova Scotia Cancer Centre) — Principal investigator
First posted
Aug 2, 2022
Start date
Jan 18, 2023
Primary completion
Nov 21, 2024 (estimated)
Completion
Nov 21, 2024 (estimated)
Last update
May 22, 2024

Study contacts

Hannah Dahn, MD
Contact
Hannah.dahn@nshealth.ca
902-473-6185

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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