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<p>The goal of this study was to assess radiation doses to the eyes of seated patients and medical staff during a videofluoroscopic swallowing study (VFSS), considering the effects of lead-equivalent glasses and the height of the medical staff. Entrance surface air kerma (ESAK) at eye level was measured using nanoDot dosimeters on anthropomorphic phantoms representing medical staff with heights of 150, 165, and 180&#xa0;cm. ESAK measurements were performed with and without 0.5–0.6&#xa0;mm lead-equivalent glasses. During a 10-minute fluoroscopy procedure, the mean ESAK at patient’s eyes without lead-equivalent glasses was higher in the anteroposterior (AP) position (36.5 mGy) than in the lateral position (14.5 mGy). The corresponding ESAK at medical staff’s eyes was notably higher in the 150-cm phantom (0.097 mGy), with an increase of 77.1% compared with that in the 165-cm phantom (0.043 mGy) and 87.4% compared with that in the 180-cm phantom (0.038 mGy). The radioprotective efficiency of lead-equivalent glasses in patients in the anteroposterior position was 92.0–93.4%, which was higher than that in the lateral position (15.8–83.2%). Radiation doses to the eyes were highest for shorter medical staff, highlighting the importance of protective measures, especially for those with shorter stature. The radioprotective efficiency of lead-equivalent glasses was found to be lower in the lateral position, underscoring the need for careful consideration of glasses design.</p>

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Investigation of radiation doses to the eyes of patients and medical staff during a videofluoroscopic swallowing study: a phantom study

  • 期刊论文

  • 发表日期：

    2025年12月24日

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  • Thunyarat Chusin,
  • Naoko Kashihara,
  • Akane Kobayashi,
  • Kosuke Matsubara

摘要

The goal of this study was to assess radiation doses to the eyes of seated patients and medical staff during a videofluoroscopic swallowing study (VFSS), considering the effects of lead-equivalent glasses and the height of the medical staff. Entrance surface air kerma (ESAK) at eye level was measured using nanoDot dosimeters on anthropomorphic phantoms representing medical staff with heights of 150, 165, and 180 cm. ESAK measurements were performed with and without 0.5–0.6 mm lead-equivalent glasses. During a 10-minute fluoroscopy procedure, the mean ESAK at patient’s eyes without lead-equivalent glasses was higher in the anteroposterior (AP) position (36.5 mGy) than in the lateral position (14.5 mGy). The corresponding ESAK at medical staff’s eyes was notably higher in the 150-cm phantom (0.097 mGy), with an increase of 77.1% compared with that in the 165-cm phantom (0.043 mGy) and 87.4% compared with that in the 180-cm phantom (0.038 mGy). The radioprotective efficiency of lead-equivalent glasses in patients in the anteroposterior position was 92.0–93.4%, which was higher than that in the lateral position (15.8–83.2%). Radiation doses to the eyes were highest for shorter medical staff, highlighting the importance of protective measures, especially for those with shorter stature. The radioprotective efficiency of lead-equivalent glasses was found to be lower in the lateral position, underscoring the need for careful consideration of glasses design.