title: Differential in vivo urodynamic measurement in a single thin catheter based on two optical fiber pressure sensors.
abstract: 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 cm H₂O (∼10 Pa), a stability better than 1 cm H₂O/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.
authors.affiliation: University of Limerick, Department of Electronic and Computer Engineering, Optical Fibre Sensors Research Centre, Main-building C2-051, Limerick 00000, Ireland.
authors.forename: Sven
authors.initials: S
authors.lastname: Poeggel
authors.affiliation: University of Limerick, Department of Electronic and Computer Engineering, Optical Fibre Sensors Research Centre, Main-building C2-051, Limerick 00000, Ireland.
authors.forename: Dineshbabu
authors.initials: D
authors.lastname: Duraibabu
authors.affiliation: University of Limerick, Department of Electronic and Computer Engineering, Optical Fibre Sensors Research Centre, Main-building C2-051, Limerick 00000, IrelandbNazarbayev University, School of Engineering, Electrical & Electronic Engineering, 53 Kabanbay.
authors.forename: Daniele
authors.initials: D
authors.lastname: Tosi
authors.affiliation: University of Limerick, Department of Electronic and Computer Engineering, Optical Fibre Sensors Research Centre, Main-building C2-051, Limerick 00000, Ireland.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Leen
authors.affiliation: University of Limerick, Department of Electronic and Computer Engineering, Optical Fibre Sensors Research Centre, Main-building C2-051, Limerick 00000, Ireland.
authors.forename: Elfed
authors.initials: E
authors.lastname: Lewis
authors.affiliation: University of Limerick, Graduate Entry Medical School, Faculty of Education & Health Sciences, Limerick 00000, Ireland.
authors.forename: Deirdre
authors.initials: D
authors.lastname: McGrath
authors.affiliation: Federico II University of Naples, Scuola di Medicina e Chirurgia, Urologic Clinic, Naples 80121, Italy.
authors.forename: Ferdinando
authors.initials: F
authors.lastname: Fusco
authors.affiliation: Federico II University of Naples, Scuola di Medicina e Chirurgia, Urologic Clinic, Naples 80121, Italy.
authors.forename: Simone
authors.initials: S
authors.lastname: Sannino
authors.affiliation: Federico II University of Naples, Scuola di Medicina e Chirurgia, Urologic Clinic, Naples 80121, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Lupoli
authors.affiliation: Federico II University of Naples, Scuola di Medicina e Chirurgia, Urologic Clinic, Naples 80121, Italy.
authors.forename: Juliet
authors.initials: J
authors.lastname: Ippolito
authors.affiliation: Federico II University of Naples, Scuola di Medicina e Chirurgia, Urologic Clinic, Naples 80121, Italy.
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Mirone
mesh_terms: D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation / Q000379:methods; D006801:Humans; D009119:Muscle Contraction; D055100:Optical Fibers; D011312:Pressure; D001743:Urinary Bladder / Q000000981:diagnostic imaging* / Q000502:physiology; D001745:Urinary Bladder Diseases / Q000000981:diagnostic imaging; D062885:Urinary Catheters; D014556:Urine; D014563:Urodynamics