Using modalmetric fiber optic sensors to monitor the activity of the heart

Życzkowski, M.; Uziębło‐Życzkowska, Beata; Dziuda, Łukasz; Różanowski, K.

doi:10.1117/12.873379

Cited by 8 publications

(8 citation statements)

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“…A similar problem concerns sensors in the modalmetric configuration, which are comprised of multimode fibers sensitive to mechanical strain so that acousto-mechanical signals from the patient are coupled into the single-mode optical fiber. 20 The modal field distribution in the multimode fiber changes in time proportionally to body movements and is detected by the single-mode fiber. Another problem associated with the modalmetric sensors is the difficulty in obtaining simultaneous monitoring of respiratory and heart function.…”

Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating-based sensor for monitoring respiration and heart activity during magnetic resonance imaging examinations

et al. 2013

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Abstract. We present a fiber-optic sensor for monitoring respiration and heart activity designed to operate in the magnetic resonance imaging (MRI) environment. The sensor employs a Plexiglas springboard, which converts movements of the patient's body lying on the board (i.e., lung-and heart-induced vibrations) to strain, where a fiber Bragg grating attached to the board is used to measure this strain. Experimental studies are carried out during thoracic spine MRI examinations. The presence of the metal-free sensor construction in the MRI environment does not pose a threat to the patient and has no influence over the quality of imaging, and the signal is identical to that obtained without any electromagnetic interference. The results show that the sensor is able to accurately reflect the ballistocardiographic signal, enabling determinations of the respiration rate (RR) and heart rate (HR). The data delivered by the sensor are normally distributed on the Bland-Altman plot for the characteristic point determination and exhibit clear dependence on the RR and HR values for the RR and HR determinations, respectively. Measurement accuracies are better than 7% of the average values, and thus, with further development, the sensor will be implemented in routine MRI examinations.

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Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating-based sensor for monitoring respiration and heart activity during magnetic resonance imaging examinations

et al. 2013

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“…3). Various physical parameter changes also can be measured by monitoring some variation in the characteristic of an optical fiber [6]- [7]. In one commonly used optical fiber biosensor the fiber is coated with a material that will absorb or capture a specific substance of interest, which is referred to as an analyte.…”

Section: Health Monitoring Devicesmentioning

confidence: 99%

A review of networked in-home healthcare

Keiser¹

2013

2013 4th International Workshop on Fiber Optics in Access Network (FOAN)

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Caring for sick, disabled, and elderly people in a home environment is a growing and challenging trend in many countries worldwide. To offer both the affected people and their caregivers a better quality of life, the use of low-cost health status monitoring devices that are networked in the home and through the Internet to healthcare centers is being explored. This paper gives a snapshot review of some wireless and optical fiber-based home healthcare monitoring devices and networking methods, and discusses some issues associated with network latency when time-critical emergency responses are needed.

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“…However, the conguration based on ber loop can cause many diculties during the implementation process [1,2]. Therefore, author presents the integrated sensor in a single arm thus the sensing structure consists of one arm ended with a mirror.…”

Section: Introductionmentioning

confidence: 99%

Modalmetric Fiber Optic Sensor for Security of Collections

Życzkowski

2013

Acta Phys. Pol. A

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The main aim of the work is the integration of modalmetric sensor in one arm. The proposed sensor is a classical ber optic cable whose measuring arm is upgraded with multimode sensor. The aim of the research is to assess the impact of modal changes for detection of mechanical disturbances and comparative assessment of detection capabilities of interferometer sensor, modalmetric sensor, and hybrid sensor for dierent types of excitations. The measurements concerns the area of fundamental research. The results can be used in the construction of sensors with corresponding characteristics and properties, especially to protect museum collections.

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Using modalmetric fiber optic sensors to monitor the activity of the heart

Cited by 8 publications

References 0 publications

Fiber Bragg grating-based sensor for monitoring respiration and heart activity during magnetic resonance imaging examinations

Fiber Bragg grating-based sensor for monitoring respiration and heart activity during magnetic resonance imaging examinations

A review of networked in-home healthcare

Modalmetric Fiber Optic Sensor for Security of Collections

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