Research summary, original research, 2025

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

Chusin T, Kashihara N, Kobayashi A, Matsubara K. Radiological physics and technology. 2025

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In plain language

In a phantom study of videofluoroscopic swallowing studies, measured eye dose was highest for the 150-cm staff phantom, more than twice the taller phantoms. Lead glasses reduced patient-phantom eye dose 92-93% frontally but less consistently laterally. These are dose measurements, not health outcomes.

At a glance

Type of study
Original research, Phantom or simulation study
Who was studied
Phantom or simulation (no people), Patients, Mixed lab staff
Summary based on
the abstract

What it found

  • During a 10-minute VFSS, eye dose was highest for the shortest (150 cm) staff phantom, well above the 165 cm and 180 cm phantoms.

    Key figures: 0.097 mGy (150 cm) vs 0.043 mGy (165 cm) and 0.038 mGy (180 cm); increase of 77.1% and 87.4%

  • Lead-equivalent glasses protected the patient phantom's eyes well in the AP position but less, and more variably, in the lateral position.

    Key figures: 92.0-93.4% (AP) vs 15.8-83.2% (lateral)

  • Without glasses, patient eye dose was higher in the AP position than in the lateral position.

    Key figures: 36.5 mGy (AP) vs 14.5 mGy (lateral)

  • Authors conclude that shorter staff need particular attention to eye protection.

Limits to keep in mind

Phantom measurements in a simulated 10-minute procedure, so results reflect dose geometry rather than real staff exposure or health outcomes. The abstract does not report staff-specific glasses efficiency, the number of measurements, or the country.

How this summary was made

ORSIF prepared this summary with AI assistance from the abstract of the paper. A program then checked that the passage supporting each finding appears word for word in that source. A person has not yet reviewed each summary, so read the original before relying on a number. ORSIF summarizes research and does not endorse any product or company. Report a problem with this summary.

Prepared November 3, 2026.