| Autor: |
Hering, E. R., Sealy, R., le Roux, P. L. M., Cleminshaw, H. |
| Zdroj: |
The British Journal of Radiology; May 1977, Vol. 50 Issue: 593 p357-359, 3p |
| Abstrakt: |
It is well-known that large squamous carcinomas in the mouth have a low cure rate with conventional radiation treatment. Attempts may be made to improve this situation by implantation of sources or treatment with an intra-oral cone, but as these may be difficult to control applicators are often preferred.The conventional oral radium applicator is uncomfortable for the patient to wear and is associated with considerable exposure to staff. In addition, the high energy ? rays are difficult to screen and radiation tolerance under these circumstances may be reached, not by the tumour and its immediate structures, but by normal tissues in the neighbourhood. Maximum screening of associated normal tissues can be achieved by using 125Iodine, a radioisotope which emits X and ? rays of 27–35 keV. This is available in seeds which are useful for the manufacture of small or large applicators (Sealy et al., 1976) and which are acceptable to patients because of their light and elegant form. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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