Differential in vivo urodynamic measurement in a single thin catheter based on two optical fiber pressure sensors

Sven Poeggel, Dineshbabu Duraibabu, Daniele Tosi, Gabriel Leen, Elfed Lewis, Deirdre McGrath, Ferdinando Fusco, Simone Sannino, Laura Lupoli, Juliet Ippolito, Vincenzo Mirone

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Urodynamic analysis is the predominant method for evaluating dysfunctions in the lower urinary tract. The exam measures the pressure during the filling and voiding process of the bladder and is mainly interested in the contraction of the bladder muscles. The data arising out of these pressure measurements enables the urologist to arrive at a precise diagnosis and prescribe an adequate treatment. A technique based on two optical fiber pressure and temperature sensors with a resolution of better than 0.1 cmH2O (~10 Pa), a stability better than 1 cmH2O/hour, and a diameter of 0.2 mm in a miniature catheter with a diameter of only 5 Fr (1.67 mm), was used. This technique was tested in vivo on four patients with a real-time urodynamic measurement system. The optical system presented showed a very good correlation to two commercially available medical reference sensors. Furthermore, the optical urodynamic system demonstrated a higher dynamic and better sensitivity to detect small obstructions than both pre-existing medical systems currently in use in the urodynamic field.

Original languageEnglish
Article number037005
JournalJournal of Biomedical Optics
Issue number3
Publication statusPublished - Mar 1 2015
Externally publishedYes


  • Fabry-Perot interferometer
  • catheter
  • differential
  • fiber Bragg grating.
  • in vivo
  • optical fiber pressure sensors
  • pressure
  • urodynamic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering

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