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| The Study of the Radiation Protection Problem in the Radionulide Interstitial Implantation Therapy |
| ZHANG Ji-mian |
| Tianjin Medical Universty, Tianjin, 300070 China |
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Abstract Objective To analyze and study the radiation protection problem in the radionulide interstitial permanent implantation therapy.Methods Based on test data from radioactive measurement department, calculating results and national standards, the radiation dose of the exposed radioactive particles, the operator who has participated in the radionulide interstitial permanent implantation therapy operation and the relatives who have accompanied the patient during the whole course, the reference time of being discharged from hospital for the patients who have been cured by different activity of radioactive particles are studied.Results The maximal radiation dose of operating doctorwho has participated in a single radionulide interstitial permanent implantation therapy operation and the relatives who has accompanied the patient during the whole course are 0.315 mSv/a and 0.70 mSv.Based on actual contact frequenies, their radiation dose is proved to be smaller than the restricted dose prescribed by national standards.The reference time of leaving hospital for the patients who have been cured by different activity of radioactive particles is 0 to 44 days.Conclusion The radiation dose of radiation workers and surrounding publics in the radionulide interstitial permanent implantation therapy operation can be acceptable under certain shields.But the risk of potential exposure should be guarded.We should Lay down operation indications and avoid performing operation blindly.If one must be operated, we should plan the quantity and the part of the painting radioactive particles accurately in order to avoid some plsible complications.
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Received: 23 May 2006
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