Heart-Rate Monitoring With an Ethyl Alpha-Cyanoacrylate Based Fiber Fabry-Perot Sensor

Li, Yang; Dong, Bo; Chen, Enqing; Wang, Xiaoli; Zhao, Yudi

doi:10.1109/jstqe.2020.3002084

Cited by 21 publications

(12 citation statements)

References 37 publications

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“…The advantage of use of optical recording for detection of phases of heart activity in the MRI environment is that the optical instrumentation has high immunity to the artifacts caused by both magnetic and high-frequency electromagnetic fields. Today, the most commonly used types of optical sensors include sensors based on the light interference [39], [40], and Fiber Bragg Grating (FBG) sensors that evaluate changes of light reflected on a grating structure [41]- [44]. The other currently developed type of optical sensor is based on the principle of measuring changes in light output caused by bends of optical fiber [45], [46].…”

Section: B Recent Approaches To Mr Triggeringmentioning

confidence: 99%

A Comparison of Alternative Approaches to MR Cardiac Triggering: A Pilot Study at 3 Tesla

Brablík

Ládrová

Vilímek

et al. 2022

IEEE J. Biomed. Health Inform.

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This pilot comparative study evaluates the usability of the alternative approaches to magnetic resonance (MR) cardiac triggering based on ballistocardiography (BCG): fiber-optic sensor (O-BCG) and pneumatic sensor (P-BCG). The comparison includes both the objective and subjective assessment of the proposed sensors in comparison with a gold standard of ECG-based triggering. The objective evaluation included several image quality assessment (IQA) parameters, whereas the subjective analysis was performed by 10 experts rating the diagnostic quality (scale 1 -3, 1 corresponding to the best image quality and 3 the worst one). Moreover, for each examination, we provided the examination time and comfort rating (scale 1 -3). The study was performed on 10 healthy subjects. All data were acquired on a 3 T SIEMENS MAG-NETOM Prisma. In image quality analysis, all approaches reached comparable results, with ECG slightly outperforming the BCGbased methods, especially according to the objective metrics. The subjective evaluation proved the best quality of ECG (average score of 1.68) and higher performance of P-BCG (1.97) than O-BCG (2.03). In terms of the comfort rating and total examination time, the ECG method achieved the worst results, i.e. the highest score and the longest examination time: 2.6 and 10:49s, respectively. The BCG-based alternatives achieved comparable results (P-BCG 1.5 and 8:06s; OBCG 1.9, 9:08s). This study confirmed that the proposed BCG-based alternative approaches to MR cardiac triggering offer comparable quality of resulting images with the benefits of reduced examination time and increased patient comfort.

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Section: B Recent Approaches To Mr Triggeringmentioning

confidence: 99%

A Comparison of Alternative Approaches to MR Cardiac Triggering: A Pilot Study at 3 Tesla

Brablík

Ládrová

Vilímek

et al. 2022

IEEE J. Biomed. Health Inform.

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“…The output is demodulated by fringe counting, and HR and pulse pressure information are obtained simultaneously through fringe pattern analysis and Kirchhoff-Love's plate theory, respectively. Y. Li et al introduced an FFPI based on ethyl alpha-cyanoacrylate (EtCNA) for HR monitoring [23]. The FFPI is fixed in the capillary tube by using an EtCNA binder.…”

Section: Optical Fiber Fabry-perot Interferometersmentioning

confidence: 99%

“…The FOS for heart monitoring can be placed under a mat [12,13,35,36] or a mattress [14,[18][19][20]38,39]. Some researchers have also made wearable sensors that can be attached to the body [37] or worn on the wrist [21][22][23]. Sensors used for body temperature monitoring need to be in direct contact with the skin, such as on an arm, in order to measure accurate results [4,5].…”

Section: Application Of Vital Signs Monitoringmentioning

confidence: 99%

“…Due to the high cost of the FBG sensors and the limited sensitivity of the intensity-based sensors, researchers chose the interferometric FOS for vital signs monitoring. Researchers have dedicated much time and effort to the design of sensor structures [12][13][14][15][16][17][18][19][20][21][22][23], demodulation methods [12,[24][25][26][27][28][29][30][31][32][33][34][35][36] and the application of vital signs monitoring [12][13][14]16,[18][19][20][21][22][23][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

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Vital Signs Monitoring Based on Interferometric Fiber Optic Sensors

et al. 2022

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Due to the improvement of living standards, people’s attention to health has gradually increased. More and more people are willing to spend money and time on health management. This article reviews work on the vital signs monitoring system based on fiber optic interferometers, including the design of sensor structures, signal demodulation methods and data analysis. After a large number of trials, the system can achieve long-term stable heart rate (HR), respiration rate (RR) and body temperature monitoring, and the collected data can be used for health analysis. Due to the high sensitivity, low cost, and light weight of the interferometric fiber optic sensor, it can be integrated under a mattress or a cushion, which is very suitable for daily use. The system has great application prospects in the field of healthcare.

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“…In contrast, optical-fiber sensors are not susceptible to electromagnetic interferences, have good insulation, are thin, exhibit high resolutions, allow long-distance transmissions, and can be easily reused. Hence, in the past few decades, they have been widely investigated and used in structural health, industrial, aerospace architecture, medical, and environmental monitoring [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. Moreover, optical-fiber sensing technology has been used for acoustic signal detection in various fields as well [ 2 , 8 , 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Fabry-Perot Interference Fiber Acoustic Wave Sensor Based on Laser Welding All-Silica Glass

Wang

2022

Materials

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Due to the small difference between the thermal expansion coefficients of silica optical fiber and silica glass, they are used as probe materials of optical fiber acoustic wave sensors. According to the light absorption characteristics of a pressure-sensitive silica diaphragm and silica glass, the laser welding of an all-silica Fabry–Perot (FP) interference optical fiber acoustic wave sensor with a CO2 laser is proposed. For understanding the influence of thermal expansion of sealing air in an FP cavity and the drift of interference-intensity demodulation working point of a FP interference acoustic wave sensor, we designed a process for the laser welding of an ultra-thin silica diaphragm and sleeve and optical fiber and sleeve. The exhaust hole of the FP cavity is reserved in the preparation process, and an amplified spontaneous emission light source and a tunable optical-fiber FP filter are introduced to stabilize the working point. The sensor is tested with a 40 kHz sound vibration signal. The results show that the sound pressure sensitivity of the sensor to an acoustic source of 0.02–0.1 W/cm2 is 6.59 mV/kPa. The linearity coefficient is 0.99975, indicating good linearity.

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Heart-Rate Monitoring With an Ethyl Alpha-Cyanoacrylate Based Fiber Fabry-Perot Sensor

Cited by 21 publications

References 37 publications

A Comparison of Alternative Approaches to MR Cardiac Triggering: A Pilot Study at 3 Tesla

A Comparison of Alternative Approaches to MR Cardiac Triggering: A Pilot Study at 3 Tesla

Vital Signs Monitoring Based on Interferometric Fiber Optic Sensors

Fabry-Perot Interference Fiber Acoustic Wave Sensor Based on Laser Welding All-Silica Glass

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