Journal ArticleDOI
Fiber-Optic EFPI Pressure Sensors for In Vivo Urodynamic Analysis
Sven Poeggel,Daniele Tosi,F. Fusco,Juliet Ippolito,Laura Lupoli,Vincenzo Mirone,Simone Sannino,Gabriel Leen,Elfed Lewis +8 more
TLDR
A fiber optic sensing system for pressure measurement in invasive urodynamics is presented and experimentally validated, showing the premises for an EFPI-based diagnostic tool.Abstract:
A fiber optic sensing system for pressure measurement in invasive urodynamics is presented and experimentally validated. Probes are based on extrinsic Fabry–Perot interferometry (EFPI) principle, with an all-glass biocompatible design having 0.2-mm thickness. Pressure sensitivity of 1.0–1.6 nm/kPa with high stability and reduced thermal sensitivity has been achieved, leading to $0.3\hbox{-}{\rm cmH}_{2}{\rm O}$ pressure accuracy. The EFPI probes have been embedded in medical catheters with 4F size for dual bladder and abdominal pressure measurement throughout the full course of a urodynamic analysis. Pressure traces have been compared with a PICO2000 urodynamic instrument, showing improved accuracy and higher responsivity to local pressure variations. Tests have been carried out in vivo on seven patients; the main highlights are reported, showing the premises for an EFPI-based diagnostic tool.read more
Citations
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Journal ArticleDOI
Optical Fibre Pressure Sensors in Medical Applications
TL;DR: An overview of the recent developments in optical fibre-based pressure measurements with particular reference to these application areas is presented.
Journal ArticleDOI
Chemically modified optical fibers in advanced technology: An overview
TL;DR: In this article, the authors reviewed the use of chemically modified optical fiber and their applications in different optical fiber-based technologies viz sensing, imaging, tomography, magnetic resonance imaging, photodynamic therapy, optogenics, surgery and environmental monitoring.
Journal ArticleDOI
A fiber Bragg gratings pair embedded in a polyurethane diaphragm: Towards a temperature-insensitive pressure sensor
TL;DR: In this article, a temperature-insensitive pressure sensor based on a pair of fiber Bragg gratings (FBGs) embedded in a polyurethane diaphragm was developed.
Journal ArticleDOI
Diaphragm-Embedded Optical Fiber Sensors: A Review and Tutorial
TL;DR: In this article, the authors thoroughly discuss many aspects of diaphragm-embedded optical fiber sensors covering industrial, robotics and medical applications: from the modeling to field applications, which also include sensor fabrication (such as interferometers, grating-based sensors, intensity variation sensors) in standard and specialty optical fibers, diaphrms and optical fiber materials thermal and mechanical characterizations.
Journal ArticleDOI
Femtosecond-Laser-Based Inscription Technique for Post-Fiber-Bragg Grating Inscription in an Extrinsic Fabry–Perot Interferometer Pressure Sensor
Sven Poeggel,Dinesh Babu Duraibabu,Amedee Lacraz,Kyriacos Kalli,Daniele Tosi,Gabriel Leen,Elfed Lewis +6 more
TL;DR: In this article, a novel fiber Bragg grating inscription technique based on a femtosecond laser is presented, where the grating was inscribed in close proximity to the tip of an extrinsic Fabry-Perot interferometer (EFPI)-based optical fiber pressure sensor.
References
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Journal ArticleDOI
Good urodynamic practices: uroflowmetry, filling cystometry, and pressure-flow studies
Werner Schäfer,Paul Abrams,Limin Liao,Anders Mattiasson,Francesco Pesce,Anders Spångberg,Arthur M. Sterling,Norman R. Zinner,Philip Van Kerrebroeck +8 more
TL;DR: This report focuses on the most common urodynamics examinations; uroflowmetry, pressure recording during filling cystometry, and combined pressure–flow studies.
Journal ArticleDOI
Recent progress in fiber-optic extrinsic Fabry–Perot interferometric sensors
TL;DR: In this article, the optical amplification technology is adopted into the EFPI sensor system to enhance the interferometric signal considerably, and both spatial-frequency multiplexing and coarse-wavelength division multiple-xing technologies are demonstrated for the Fizeau sensor in order to realize the measurement of multiple parameters such as displacement, transverse load, static strain, temperature, and vibration.
Journal ArticleDOI
High-sensitivity Fabry–Perot interferometric pressure sensor based on a nanothick silver diaphragm
TL;DR: A fiber-optic extrinsic Fabry-Perot interferometer pressure sensor based on a nanothick silver diaphragm that exhibits a relatively linear response within the pressure variation range of 0-50 kPa, with a high pressure sensitivity of 70.5 nm/kPa.
Journal ArticleDOI
Refining diagnosis of anatomic female bladder outlet obstruction: comparison of pressure-flow study parameters in clinically obstructed women with those of normal controls.
TL;DR: Improve the definition of pressure-flow study cutoff values for anatomic female bladder outlet obstruction by comparing these parameters in women with clinical obstruction with those of normal controls by using normal controls rather than an incontinent control population.
Journal Article
Pressure Flow Urodynamic Studies: The Gold Standard for Diagnosing Bladder Outlet Obstruction
TL;DR: It is suggested that although the definition of obstruction may differ between men and women, the concept of the pressure-flow relation to diagnose obstruction holds true for both genders.