OBJECTIVE: Validation of dosimetry and exposition time to an ophthalmic surgeon during radioactive plaque operations. DESIGN: Experimental study in which videotaped operations and dosimetric measurements were used to model dosimetry. METHODS: We used thermoluminescence detectors for high sensitivity readings in radiation fields. Typical intersurgical mobility was videotaped and distances to the plaque was evaluated. MAIN OUTCOME MEASURE: Estimated radiation received by surgeons. RESULTS: All simulated plaque operations have a maximum dose rate of 6 mGy per minute (value in the inner eyeball). Mean dose rate is 2 mGy per minute (average of approximately all measurements). The surgeon's fingers receive a dose from 2 to 6 mSv from plaque operation. CONCLUSIONS: Results suggest that radioactive plaque operations are safe for the surgeon but that the time for plaque handling should be minimized. A surgeon should not exceed 100 to 200 operations per year.
OBJECTIVE: Validation of dosimetry and exposition time to an ophthalmic surgeon during radioactive plaque operations. DESIGN: Experimental study in which videotaped operations and dosimetric measurements were used to model dosimetry. METHODS: We used thermoluminescence detectors for high sensitivity readings in radiation fields. Typical intersurgical mobility was videotaped and distances to the plaque was evaluated. MAIN OUTCOME MEASURE: Estimated radiation received by surgeons. RESULTS: All simulated plaque operations have a maximum dose rate of 6 mGy per minute (value in the inner eyeball). Mean dose rate is 2 mGy per minute (average of approximately all measurements). The surgeon's fingers receive a dose from 2 to 6 mSv from plaque operation. CONCLUSIONS: Results suggest that radioactive plaque operations are safe for the surgeon but that the time for plaque handling should be minimized. A surgeon should not exceed 100 to 200 operations per year.
Authors: Sona N Shah; Kaitlin Kogachi; Zelia M Correa; Amy C Schefler; Mary E Aronow; Sonia A Callejo; Colleen M Cebulla; Shelley Day-Ghafoori; Jasmine H Francis; Sara Lally; Tara A McCannel; Katherine E Paton; Isabella T Phan; Renelle Pointdujour-Lim; Aparna Ramasubramanian; Pamela Rath; Carol L Shields; Alison H Skalet; Jill R Wells; Richard L Jennelle; Jesse L Berry Journal: Ocul Oncol Pathol Date: 2018-06-12