PTTL method applied to UV radiation detection during refractive surgery using excimer laser

PTTL method applied to UV radiation detection during refractive surgery using excimer laser

Autor Grossi, F. H. Google Scholar
Melo, LAS de Google Scholar
Schor, P. Google Scholar
Campos, L. L. Google Scholar
Instituição IPEN
Universidade Federal de São Paulo (UNIFESP)
Resumo The method of phototransferred thermoluminescence (PTTL), using CaSO(4):Dy pellets produced at WEN as sensitive material, was used to detect the spread laser radiation inside the surgery room during refractive surgical procedures using ArF excimer lasers. the purpose of this work was to study the viability of performing the ultraviolet radiation (UVR) exposure detection of patients and the hospital's surgical staff during a refractive surgery. the CaSO(4):Dy pellets were positioned at different distances from the laser source inside the surgery room: patient's (congruent to 0.15 m), surgeon's (congruent to 0.5 m) and nurse's (congruent to 1.0 m) foreheads, lateral (congruent to 1.5 m) and back (congruent to 4.0 m) walls. the measurements of PTTL were carried out at two different conditions: five surgeries, each one taking similar to 10 min, and during a period of 4 h (cumulative), when several operations were performed. the detectors positioned as far as 4.0 m from the UV laser source were sensitised, making the UVR detection feasible at large source-detector distances. the absorbed energy was detected in the range from 40 mu J to 30 mJ during a surgery. This result indicates that the method studied can be used to detect the spread UVR.
Idioma Inglês
Data de publicação 2005-01-01
Publicado em Radiation Protection Dosimetry. Oxford: Oxford Univ Press, v. 113, n. 2, p. 185-188, 2005.
ISSN 0144-8420 (Sherpa/Romeo, fator de impacto)
Publicador Oxford Univ Press
Extensão 185-188
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000228922900009
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