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[Experience in dealing with artificial pacemaker patients during therapy with ionizing radiation]
H Röthig1, T Herrmann, H Kopcsek
1Klinik und Ploliklinik für Strahlentherapie, Universitätsklinikum Carl Gustav Carus der TU Dresden.
Summary
Radiotherapy patients with pacemakers face risks from ionizing radiation. Minimizing radiation exposure and regular pacemaker checks are crucial to prevent damage and ensure patient safety during treatment.
Area of Science:
- Medical Physics
- Radiation Oncology
- Cardiology
Background:
- Patients with pacemakers are at significant risk from ionizing radiation during radiotherapy.
- Radiation can potentially damage the delicate circuitry of pacemaker devices.
Purpose of the Study:
- To outline strategies for managing pacemaker patients undergoing radiotherapy.
- To investigate the effects of radiation on pacemaker systems.
- To recommend radiation dose limits for pacemakers.
Main Methods:
- Analysis of interdisciplinary co-operation experiences with pacemaker patients during radiotherapy.
- Investigation of explanted pacemakers to understand radiation effects.
- Determination of standard dose values for 9-MV-photons.
Main Results:
- Minimizing radiation dose through shielding, radiation quality selection, and optimal pacemaker positioning is essential.
- Variations in manufacturing and product parameters prevent defining a universal radiation resistance value.
- Pacemaker function and longevity can be affected by radiation exposure.
Conclusions:
- Pacemaker radiation doses must be kept as low as possible.
- Regular monitoring of pacemaker systems is vital, especially during radiotherapy.
- Pacemakers exceeding 5 Gy cumulative dose should be replaced post-radiotherapy.