Seed-less iodine-125 ophthalmic applicator.
A method of preparation a seed-less active insert of iodine-125 ophthalmic applicator is described. Internal electrolysis was applied for fixing iodine-125 on the concave surface of the silver shell which is afterwards hermetically sealed inside a spherically shaped acrylic insert. The current-voltage characteristics of the galvanic cell used for deposition of silver iodide were determined. The results of the measurements of the energy spectra of the radiation emitted by a seed-less and seed-containing applicator are presented. The iodine-125 surface distribution uniformity on a silver shell was measured. The depth dose rate measurements indicate that the total activity incorporated in a seed-less applicator can be lower than that in seed-containing, while simultaneously assuring the desired dose rate.
Puchalska
Izabela
I
Radioisotope Centre Polatom, 05-400 Otwock-Swierk, Poland.
Mielcarski
Mieczyslaw
M
D000179:Acrylates / Q000737:chemistry; D001918:Brachytherapy / Q000295:instrumentation*; D004563:Electrochemistry; D005134:Eye Neoplasms / Q000532:radiotherapy; D006801:Humans; D007457:Iodine Radioisotopes / Q000008:administration & dosage / Q000737:chemistry / Q000627:therapeutic use*; D009885:Ophthalmology / Q000295:instrumentation*; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy; D012834:Silver / Q000737:chemistry
D000179:Acrylates; D007457:Iodine Radioisotopes; D012834:Silver