New fibre optic sensor for respiratory monitoring

Davis, Claire; Mazzolini, Alexander P.; Murphy, Daniel J.

doi:10.1016/s0920-5489(99)92016-0

Cited by 24 publications

(29 citation statements)

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“…In sensors measuring transmission loss caused by slight (miniscule) deflections of an optical fiber or in fiber bends with a radius of curvature well above the fiber diameter (>10 mm), i.e., in so-called micro- [82][83][84][85][86][87][88] and macrobend [89][90][91][92][93][94][95][96][97][98][99][100][101][102][103][104][105][106][107] sensors, respectively, the intensity of the light reaching the receiver is also measured. As in the cases described above, body movements (caused by respiration and heart function, among other things) are a complicating factor since these movements produce micro-and macrobends of fibers with a variable radius of curvature.…”

Section: Micro-and Macrobending Fiber-optic Sensorsmentioning

confidence: 99%

“…The measuring system for micro-and macrobend sensors is distinguished by a simple design for the sensors alone as well as for the associated transceiver modules (light source and photodetector). Nevertheless, due to their relatively low sensitivity, the sensors have to be embedded in a special mat 82,83 or cushion, [85][86][87][88] on which the patient lies during monitoring, or in textiles, such as a vest, T-shirt, or belt, which are worn by the monitored person, [89][90][91][92][93][94][95][96][97][98][99][100][101][102][103][104][105][106][107] to ensure immediate proximity to the lungs and heart. An example of a microbend sensor system is shown in Fig.…”

Section: Micro-and Macrobending Fiber-optic Sensorsmentioning

confidence: 99%

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Fiber-optic sensors for monitoring patient physiological parameters: a review of applicable technologies and relevance to use during magnetic resonance imaging procedures

Dziuda

2015

J. Biomed. Opt.

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Abstract. The issues involved with recording vital functions in the magnetic resonance imaging (MRI) environment using fiber-optic sensors are considered in this paper. Basic physiological parameters, such as respiration and heart rate, are fundamental for predicting the risk of anxiety, panic, and claustrophobic episodes in patients undergoing MRI examinations. Electronic transducers are generally hazardous to the patient and are prone to erroneous operation in heavily electromagnetically penetrated MRI environments; however, nonmetallic fiberoptic sensors are inherently immune to electromagnetic effects and will be crucial for acquiring the abovementioned physiological parameters. Forty-seven MRI-tested or potentially MRI-compatible sensors have appeared in the literature over the last 20 years. The author classifies these sensors into several categories and subcategories, depending on the sensing element placement, method of application, and measurand type. The author includes five in-house-designed fiber Bragg grating based sensors and shares experience in acquiring physiological measurements during MRI scans. This paper aims to systematize the knowledge of fiber-optic techniques for recording life functions and to indicate the current directions of development in this area.

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Section: Micro-and Macrobending Fiber-optic Sensorsmentioning

confidence: 99%

Section: Micro-and Macrobending Fiber-optic Sensorsmentioning

confidence: 99%

Fiber-optic sensors for monitoring patient physiological parameters: a review of applicable technologies and relevance to use during magnetic resonance imaging procedures

Dziuda

2015

J. Biomed. Opt.

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“…Authors also presented a improved version based on a novel figure-of-eight loop configuration, contributing for the increased linearity of response, less mechanical resistance and hysteresis [112]. The FORP technique was also explored by others [113][114][115]. Such an example was the FORP system presented by Davis et al [113], from the Centre for Imaging and Advanced Optics of the School of Biophysical Sciences and Electrical Engineering (Swinburne University of Technology, Melbourne, Australia).…”

Section: Intensity-modulated Sensors Based On Bendingmentioning

confidence: 99%

“…The FORP technique was also explored by others [113][114][115]. Such an example was the FORP system presented by Davis et al [113], from the Centre for Imaging and Advanced Optics of the School of Biophysical Sciences and Electrical Engineering (Swinburne University of Technology, Melbourne, Australia). The system was improved to monitor children high-frequency, low amplitude chest wall movements, claiming for no risk of electric noise and shock [114].…”

Section: Intensity-modulated Sensors Based On Bendingmentioning

confidence: 99%

Fiber optic intensity-modulated sensors: a review in biomechanics

et al. 2012

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Fiber optic sensors have a set of properties that make them very attractive in biomechanics. However, they remain unknown to many who work in the field. Some possible causes are scarce information, few research groups using them in a routine basis, and even fewer companies offering turnkey and affordable solutions. Nevertheless, as optical fibers revolutionize the way of carrying data in telecommunications, a similar trend is detectable in the world of sensing. The present review aims to describe the most relevant contributions of fiber sensing in biomechanics since their introduction, from 1960s to the present, focusing on intensity-based configurations. An effort has been made to identify key researchers, research and development (R&D) groups and main applications.

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“…Optical fiber-based sensors offer numerous advantages over conventional sensors such as absence of electrical interference, fast response time, good flexibility and remote sensing [11][12][13][14][15][16][17]. The use of fiber-optic sensors instead of electrical devices can reduce electro-magnetic disturbance of the magnetic field as well as burning hazard to the patient inside the MRI system.…”

Section: Introductionmentioning

confidence: 99%

Development of Respiration Sensors Using Plastic Optical Fiber for Respiratory Monitoring Inside MRI System

Yoo¹,

Jang²,

Seo³

et al. 2010

Journal of the Optical Society of Korea

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In this study, we have fabricated two types of non-invasive fiber-optic respiration sensors that can measure respiratory signals during magnetic resonance (MR) image acquisition. One is a nasal-cavity attached sensor that can measure the temperature variation of air-flow using a thermochromic pigment. The other is an abdomen attached sensor that can measure the abdominal circumference change using a sensing part composed of polymethyl-methacrylate (PMMA) tubes, a mirror and a spring. We have measured modulated light guided to detectors in the MRI control room via optical fibers due to the respiratory movements of the patient in the MR room, and the respiratory signals of the fiber-optic respiration sensors are compared with those of the BIOPAC ® system. We have verified that respiratory signals can be obtained without deteriorating the MR image. It is anticipated that the proposed fiber-optic respiration sensors would be highly suitable for respiratory monitoring during surgical procedures performed inside an MRI system.

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New fibre optic sensor for respiratory monitoring

Cited by 24 publications

References 0 publications

Fiber-optic sensors for monitoring patient physiological parameters: a review of applicable technologies and relevance to use during magnetic resonance imaging procedures

Fiber-optic sensors for monitoring patient physiological parameters: a review of applicable technologies and relevance to use during magnetic resonance imaging procedures

Fiber optic intensity-modulated sensors: a review in biomechanics

Development of Respiration Sensors Using Plastic Optical Fiber for Respiratory Monitoring Inside MRI System

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