Clinical trial · Interventional
3D Printed Bolus in Post-mastectomy Radiotherapy
Clinical Study of 3D Printed Bolus for Volumetric Modulated Arc Therapy of Post-mastectomy Treatment
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Recently, there is growing interest in the application of three-dimensional (3D) printed bolus to radiotherapy.At present, the researches on the application of 3D-printed bolus in breast cancer are mainly focused on air gap between skin and bolus or electron beam conformal therapy \[7,15\], there are no clinical experience with customized 3D-printed bolus for volumetric modulated arc therapy (VMAT) in daily practice has been published up to now. We aim to evaluate dosimetry and application of 3D-printed bolus for the post-mastectomy radiotherapy (PMRT) with Volumetric modulated arc therapy (VMAT). Seventy five patients with breast cancer receiving radiotherapy following post-mastectomy in our department were randomly selected in this study. The accuracy of fit of the 3D-Printed bolus to the chest wall was improved significantly relative to conventional bolus.This study demonstrates customized 3D-printed bolus in post-mastectomy radiation therapy improves fit of the bolus compared to conventional bolus. Furthermore, VMAT based on 3D-printed bolus significantly improves the chest wall target coverage and the conformity of plan, and reduces the dose of ipsilateral lung and heart, compared to conventional bolus.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Breast Neoplasms | Breast Neoplasm | ONTOLOGY_EXACT | 0.98 |
| Radiotherapy Side Effect | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| customized 3D-printed bolus fabricated based on reconstruction of computed tomography (CT) images | Other | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- 3D-printed bolus
- interventionNames
- Other: customized 3D-printed bolus fabricated based on reconstruction of computed tomography (CT) images
- type
- NO_INTERVENTION
- label
- Conventional bolus
Primary outcomes (1)
- measure
- dose comparison
- timeFrame
- one year
- description
- The prescription dose was 50 Gy in 25 fractions. Dose-volume histograms (DVHs) were used dosimetric analysis. D98%, D50% and D2%, indicating dose to 98% (near-minimum dose), 50% and 2% (near-maximum dose) of both target volumes, and V95%, V100%, and V110% indicating percent volume receiving 95%, 100% and 110% of prescribed dose, were recorded
Eligibility
Eligibility (as posted)
- Sex
- All
Show eligibility criteria text
Inclusion Criteria: * breast cancer patients with post-mastectomy treatment Exclusion Criteria: * NA
References
Publications (0)
Data not yet available