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Related Experiment Video

Updated: Jun 27, 2026

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

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Published on: September 11, 2011

Can we use pulsed fluoroscopy to decrease the radiation dose during video fluoroscopic feeding studies in children?

M D Cohen1

  • 1Department of Radiology, Riley Children's Hospital, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA. mecohen@iupui.edu

Clinical Radiology
|December 17, 2008
PubMed
Summary
This summary is machine-generated.

Reducing video fluoroscopic feeding study rates below 30 frames/s risks missing rapid supraglottic penetration events. This study shows penetration is often detected in just one or two frames, making lower rates unsafe for radiation dose reduction.

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Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models
08:32

Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models

Published on: March 1, 2015

Area of Science:

  • Pediatric Swallowing Disorders
  • Radiological Imaging Techniques
  • Radiation Dose Optimization

Background:

  • Video fluoroscopic swallowing studies (VFSS) are crucial for diagnosing pediatric swallowing abnormalities.
  • Current protocols often use 30 frames/s (continuous fluoroscopy) to capture rapid events.
  • Minimizing radiation exposure in pediatric imaging is a significant clinical concern.

Purpose of the Study:

  • To evaluate the feasibility of reducing radiation dose in VFSS by lowering the frame rate.
  • To determine if rapid events like supraglottic penetration can be reliably detected at lower frame rates.

Main Methods:

  • Ten pediatric patients with documented supraglottic penetration during VFSS were analyzed.
  • All studies were initially performed at 30 frames/s.
  • Frame-by-frame analysis focused on the initial episode of penetration to assess detection frames.

Main Results:

  • Supraglottic penetration events were extremely rapid.
  • In 70% of patients (7/10), penetration was visualized on a single image frame.
  • In all patients, penetration was detected within a maximum of two image frames.

Conclusions:

  • Lowering the fluoroscopic frame rate below 30 frames/s is not recommended for VFSS.
  • Reduced frame rates may lead to missed diagnoses of critical events like supraglottic penetration.
  • Current frame rates are necessary to ensure detection of rapid physiological events during swallowing studies.