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Radiation Dose During Videofluoroscopic Swallowing Studies and Associated Factors in Pediatric Patients

Hyo Won Im1, Seung Yeun Kim1, Byung-Mo Oh1

  • 1Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea.

Dysphagia
|April 5, 2019
PubMed

Insights

Radiation dose during videofluoroscopic swallowing studies (VFSS) in children was evaluated. Optimizing screening time, collimation, and minimizing metal objects significantly reduces radiation exposure for pediatric patients.

Area of Science:

  • Medical Imaging
  • Pediatric Radiology
  • Radiation Safety

Background:

  • Children exhibit higher radiosensitivity compared to adults.
  • Limited research exists on radiation doses during videofluoroscopic swallowing studies (VFSS) in pediatric populations.
  • Understanding and mitigating radiation exposure in pediatric VFSS is crucial for patient safety.

Purpose of the Study:

  • To investigate radiation dosage, measured by dose-area product (DAP), during VFSS in children (0-17 years).
  • To identify key factors influencing radiation dose in pediatric VFSS.
  • To provide data for optimizing radiation safety protocols in pediatric swallowing evaluations.

Main Methods:

  • Retrospective analysis of 290 VFSS procedures in pediatric patients.
  • Data collected included DAP, fluoroscopic time, number of diets, and patient demographics/clinical characteristics.
  • Factors assessed included screening time, use of collimation, and presence of metal objects within the fluoroscopic field.

Main Results:

  • The mean DAP was 5.78 ± 4.34 Gy cm² with an average screening time of 2.69 ± 1.30 min.
  • Radiation dose was significantly associated with screening time, presence of metal objects, and use of collimation.
  • In cases utilizing collimation and without metal objects, the mean DAP decreased to 2.96 ± 2.53 Gy cm².

Conclusions:

  • Screening time, collimation, and metal object presence are significant modifiable factors affecting radiation dose in pediatric VFSS.
  • Implementing strategies to control these factors can effectively reduce radiation risk in children undergoing VFSS.
  • Further research and adherence to optimized protocols are essential for minimizing radiation exposure in pediatric swallowing assessments.

Keywords:
ChildDeglutitionDeglutition disordersRadiation

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