Ophthalmology and Ionizing Radiation by Shravana Kumar Chinnikatti in TOOAJ-Lupine Publishers
Due to the sensitive nature and low radiation tolerance of eye and its
contents radiation to eye is sparingly and selectively used. Delivering
ionizing radiation to eye associated with complications, however the
intraocular tumors are highly radiosensitive and radiation can be
delivered both by external beam therapy and brachytheray. Due to recent
advances in radiotherapy now particle beam therapy is preferred for best
vision sparing therapy due its selective nature. External and
brachytherapy can radiation used with intent of radiacal, adjuvant and
palliative intent to most common intraocular tumors like retinoblastoma,
choroidal melanoma and metastatic tumors. Brachytherapy rarely is used
only in selective centers with high technical expertise due high
professional exposure to ionizing radiation. Radiation plaques are used
in brachytherapy and these are the preloaded sources kept near the
tumors either temporarily or permanently. Brachytherapy most commonly
used for choroid melanomas. Brachytherapy plaques come in different
sizes and shapes or can be customized according to the needs.
Brachytherapy basically delivers high radiation to tumor and less
radiation to surrounding normal tissues.
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