Related Experiment Videos
Preliminary results for prone-position breast irradiation
Marc-André Mahe1, Jean-Marc Classe, François Dravet
1Department of Radiotherapy, Centre René Gauducheau, Nantes, France. ma-mahe@nantes.fnclcc.fr
International Journal of Radiation Oncology, Biology, Physics
|January 5, 2002
Summary
A new prone-positioning technique using a specialized platform allows for effective breast irradiation after conservative surgery. This method simplifies CT scanning and treatment positioning, showing feasibility in most patients.
Area of Science:
- Radiation Oncology
- Medical Physics
- Surgical Oncology
Background:
- Breast irradiation after conservative surgery is standard care.
- Large, pendulous breasts can pose positioning challenges.
- Optimizing patient positioning is crucial for effective radiation delivery and minimizing side effects.
Purpose of the Study:
- To evaluate an alternative prone-positioning technique for breast irradiation.
- To assess the feasibility and dosimetric accuracy of a novel plexiglass platform.
- To determine the suitability of this technique for patients with large, pendulous breasts.
Main Methods:
- A plexiglass platform with specific slopes was used for positioning 35 patients.
- Computed tomography (CT) was performed for treatment planning.
- Three-dimensional dosimetry was conducted to evaluate radiation field coverage and dose distribution.
Main Results:
- Excellent positioning was achieved in most patients (32/35).
- CT acquisition was feasible with the platform.
- Dosimetry confirmed adequate coverage of the whole breast and chest wall with acceptable dose levels (≤105%) and minimal acute skin reactions (Grade I-II).
Conclusions:
- The evaluated prone-positioning technique is feasible for breast irradiation post-conservative surgery.
- A key advantage is the use of a similar position for both CT scanning and treatment delivery.
- This technique offers a viable option for patients with challenging breast anatomy.