Plaque Radiotherapy
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Plaque radiotherapy is a type of
radiation therapy Radiation therapy or radiotherapy (RT, RTx, or XRT) is a therapy, treatment using ionizing radiation, generally provided as part of treatment of cancer, cancer therapy to either kill or control the growth of malignancy, malignant cell (biology), ...
used to treat
eye An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system. In higher organisms, the ey ...
tumors. A thin piece of metal (usually gold) with radioactive seeds placed on one side is
sewn Sewing is the craft of fastening pieces of textiles together using a sewing needle and thread. Sewing is one of the oldest of the textile arts, arising in the Paleolithic era. Before the invention of spinning yarn or weaving fabric, archaeol ...
onto the outside wall of the eye with the seeds aimed at the
tumor A neoplasm () is a type of abnormal and excessive growth of tissue. The process that occurs to form or produce a neoplasm is called neoplasia. The growth of a neoplasm is uncoordinated with that of the normal surrounding tissue, and persists ...
. It is removed at the end of treatment, which usually lasts for several days.
Iodine-125 Iodine-125 (125I) is a radioisotope of iodine which has uses in biological assays, nuclear medicine imaging and in radiation therapy as brachytherapy to treat a number of conditions, including prostate cancer, uveal melanomas, and brain tumor ...
is among the isotopes used.


References


External links


Plaque radiotherapy
entry in the public domain NCI Dictionary of Cancer Terms Radiation therapy {{nuclear-med-stub