Absorbed doses and energy imparted from radiographic examination of velopharyngeal function during speech.

摘要: Absorbed doses of radiation were measured by thermoluminescent dosimeters (TLDs) using a skull phantom during simulated cinefluorographic and videofluorographic examination velopharyngeal function in frontal lateral projections. Dosages to the thyroid gland, parotid pituitary ocular lens measured. Radiation dosage was found be approximately 10 times less for videofluoroscopy when compared with that cinefluoroscopy. In addition, precautionary measures reduce further exposure radiation-sensitive tissues. Head fixation shielding resulted dose reduction both video- Pulsing cinefluoroscopy also reduced dosage.