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Radiation Protection of Persons Living Close to Patients with Radioactive Implants

Strahlenschutz von Personen, die mit Patienten mit radioaktiven Implantaten zusammenleben

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Abstract

Background:

Permanent interstitial brachytherapy is – in certain cases – a very successful therapeutic option, but application of radioactive implants always results in only gradually diminishing radiation exposure of persons in the patient’s immediate surroundings.

Material and Methods:

Using patients with clinically localized prostate cancer treated with iodine-125 (125I) or palladium-103 (103Pd) as an example, it is shown how a patient, if necessary or wished by him, can, by wearing commercially available X-ray protection shorts, reduce radiation exposure of family members in such a way that at a distance r from the patient a given dose per year is not exceeded.

Results:

The computational procedures necessary for the determination of the individual periods of wearing X-ray protection clothing are provided in the form of formulae and graphics. All considerations and calculations can also be applied to other radiotherapeutic interventions involving the use of 125I, 103Pd or other γ-sources.

Conclusion:

If necessary, a patient with permanent radioactive implants can reduce radiation exposure of family members by wearing special X-ray protection clothing for a limited period of time. This kind of radiation protection is very efficient and considerably simpler to accomplish than a reduction of exposure time or an increase of the distance between the patient and family members.

Zusammenfassung

Hintergrund:

Die permanente interstitielle Brachytherapie ist eine sehr erfolgreiche therapeutische Option, die aber immer auch mit einer Strahlenexposition von Personen in unmittelbarer Umgebung des Patienten verbunden ist.

Material and Methodik:

Am Beispiel von Patienten mit Prostatakarzinom, die mit Jod-125 (125I) oder Palladium-103 (103Pd) behandelt wurden, wird gezeigt, wie der Patient durch individuell begrenzte Tragedauer kommerziell erhältlicher Strahlenschutzhosen die Strahlenexposition seiner Familienmitglieder, falls erforderlich oder von ihm gewünscht, so limitieren kann, dass im Abstand r vom Patienten eine vorgegebene Dosis pro Jahr nicht überschritten wird.

Ergebnisse:

Die benötigten Berechnungsgrundlagen werden als Formeln und Grafiken zur Bestimmung der individuellen Tragedauer der Strahlenschutzhosen präsentiert. Alle Überlegungen und Berechnungen lassen sich auch auf andere strahlentherapeutische Maßnahmen mit 125I, 103Pd oder auch andere γ-Strahler anwenden.

Schlussfolgerung:

Ein Patient mit radioaktivem Permanentimplantat kann durch das zeitlich begrenzte Tragen von Strahlenschutzhosen die Strahlenexposition von Familienmitgliedern stark reduzieren. Diese Strahlenschutzmaßnahme ist sehr wirkungsvoll und wesentlich einfacher anzuwenden als eine Reduktion der Aufenthaltsdauer oder eine Vergrößerung des Abstands zu Familienmitgliedern.

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Correspondence to Theodor W. Kaulich.

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Kaulich, T.W., Bamberg, M. Radiation Protection of Persons Living Close to Patients with Radioactive Implants. Strahlenther Onkol 186, 107–112 (2010). https://doi.org/10.1007/s00066-010-2073-x

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  • DOI: https://doi.org/10.1007/s00066-010-2073-x

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