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First clinical experience with a remote afterloading system for low dose rate interstitial breast implants.
H Meertens1, H Bartelink, T Minderhoud
1Radiotherapy Department, The Netherlands Cancer Institute (Antoni van Leewenhoekhuis), Amsterdam.
Summary
A new remote afterloading system, the Micro-Selectron, enhances safety for medical staff during brachytherapy. This system efficiently treats patients with breast implants, showing a low error rate and ensuring treatment completion.
Area of Science:
- Medical Physics
- Oncology
- Radiotherapy
Background:
- Brachytherapy is a crucial cancer treatment modality.
- Low or medium dose rate brachytherapy requires precise radioactive source placement.
- Existing afterloading systems may pose radiological risks to staff.
Purpose of the Study:
- To clinically evaluate a new remote afterloading system, the Micro-Selectron.
- To assess the system's efficacy and safety in brachytherapy procedures.
- To determine the impact on radiological protection for medical personnel.
Main Methods:
- Clinical evaluation of the Micro-Selectron remote afterloading system.
- Loading of up to 15 iridium-192 (192Ir) wires or seeds simultaneously.
- Treatment of 160 patients with breast implants using remote afterloading.
Main Results:
- The Micro-Selectron system demonstrated improved radiological protection for medical staff.
- A mean error frequency of approximately one error per 10 treatments was observed.
- Machine failures accounted for about half of the errors, but treatments were completed using spare channels.
- A set of 45 source assemblies was found adequate for breast-needle implants.
Conclusions:
- The Micro-Selectron system is a safe and effective tool for low or medium dose rate brachytherapy.
- The system enhances safety for healthcare professionals in radiotherapy departments.
- The observed error rates are manageable and do not compromise treatment delivery.