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Intraoperative interstitial microwave-induced hyperthermia and brachytherapy
International Journal of Radiation Oncology, Biology, Physics
|September 1, 1985
Summary
This study demonstrates a feasible cancer therapy combining microwave-induced hyperthermia with brachytherapy. The technique safely delivers localized tumor heating, offering a potential new treatment for various cancers.
Area of Science:
- Oncology
- Medical Physics
- Biomedical Engineering
Background:
- Unresectable tumors pose treatment challenges.
- Localized hyperthermia can enhance cancer therapy efficacy.
- Interstitial brachytherapy is a standard radiation technique.
Purpose of the Study:
- To evaluate the feasibility of combining interstitial microwave antenna array hyperthermia (IMAAH) with brachytherapy.
- To assess the safety and efficacy of localized hyperthermia delivery.
- To explore this combined approach for treating deep-seated, unresectable tumors.
Main Methods:
- 11-gauge nylon catheters were placed into unresectable tumors.
- Microwave antennas were inserted into catheters for hyperthermia (915 MHz) for 1 hour.
- Hyperthermia was applied before and after iridium-192 brachytherapy.
- Temperature monitoring used fiberoptic thermometry probes.
Main Results:
- The combined approach was feasible in four preliminary cases.
- Controlled, localized hyperthermia was achieved, reaching temperatures >= 50°C.
- No significant complications like bleeding or infection were observed.
- Tumor heating was localized and controlled.
Conclusions:
- Combined interstitial microwave antenna array hyperthermia and brachytherapy is a safe and feasible technique.
- This approach allows for controlled, localized hyperthermia delivery.
- It presents a potential therapeutic option for pelvic, intra-abdominal, and head and neck tumors.