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Dynamic digital radiography (DDR) offers a new, low-dose imaging method for assessing vocal cord paralysis (VCP). This technique successfully visualized vocal cord fixation, complementing traditional methods.

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Area of Science:

  • Medical Imaging
  • Laryngology
  • Radiology

Background:

  • Flexible laryngoscopy (FL) is standard for vocal cord paralysis (VCP) but causes discomfort and subjective interpretation.
  • Dynamic digital radiography (DDR) is a novel, low-dose imaging technique with limited investigation for laryngeal motion analysis.

Purpose of the Study:

  • To investigate the feasibility and utility of DDR for laryngeal functional assessment, specifically vocal cord motion analysis.
  • To present a case study demonstrating DDR's application in diagnosing vocal cord paralysis.

Main Methods:

  • A 50-year-old male with suspected vocal cord paralysis underwent Dynamic Digital Radiography (DDR) of the neck.
  • Phonation maneuvers were performed during DDR to assess vocal cord mobility.
  • Computed Tomography (CT) was used for confirmation and further anomaly detection.

Main Results:

  • DDR successfully visualized left vocal cord fixation in an adducted paramedian position during phonation.
  • CT confirmed the DDR findings without revealing additional abnormalities.
  • This case highlights DDR's potential for laryngeal functional evaluation.

Conclusions:

  • Dynamic digital radiography (DDR) is a feasible, low-cost, low-dose, and non-invasive technique for functional laryngeal evaluation.
  • DDR may serve as a valuable complementary imaging tool for assessing vocal cord motion and diagnosing vocal cord paralysis.