Analysis of encapsulation the fiber Bragg sensors for biomedical applications

Nedoma, Jan; Fajkus, Marcel; Jargus, Jan; Martínek, Radek; Witas, Karel; Vaňuš, Jan; Vašinek, Vladimír

doi:10.1117/12.2304580

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…PDMS has desirable properties, such as immunity to electromagnetic interference, inertness to human skin, minimal effect on the FBG function, and protection of the FBG part of the sensor. The sensor used in this study has evolved from our team's previous biomedical applications experience [15], [18]- [20]. The sensor was fabricated using a 3D printing process.…”

Section: Methodsmentioning

confidence: 99%

“…More importantly, it is harmless to human and is electrically nonconductive. We have previously reported successful encapsulating of the Bragg grating sensor and its use in several biomedical application [15], [18]- [20]. Based on recent refinements, we now have achieved minimum dimensions of 30×15 mm and weight of 2 g resulting in simpler implementation and minimal load burden on the patient.…”

Section: B Fbg Sensor Designmentioning

confidence: 99%

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A Novel FBG-Based Triggering System for Cardiac MR Imaging at 3 Tesla: A Pilot Pre-Clinical Study

et al. 2020

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This first-ever study demonstrates the applicability of a fiber Bragg grating (FBG) system for MR cardiac triggering of cardiovascular magnetic resonance at 3 Tesla. The unique patented system senses body movements caused by cardiac activity using a non-invasive ballistocardiography (BCG) sensor. The pilot research compares a novel FBG-based system with clinically used triggering systems based on electrocardiography (ECG) and pulse oximetry (POX). The pilot pre-clinical study was conducted on 8 subjects at a Siemens Prisma 3T MR Scanner. The study compares images from two basic cardiac sequences, TRUE FISP (Free Induction Decay Steady-State Precession) and PSIR (Phase Sensitive Inversion Recovery), using objective methods and subjective evaluation by clinical experts. The study presents original results that confirm the applicability of optical sensors in the field of cardiac triggering having a number of advantages in comparison to conventional solutions, such as no eddy current interference, ease of placement of the sensor on the patient's body, and senor reusability. The proposed FBG-based system achieves comparable results with the most frequently used and most accurate ECG-based and POX-based clinical systems. In terms of subjective evaluation by experts, the FBG system outperformed the POX-based system used in clinical practice.

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Section: Methodsmentioning

confidence: 99%

Section: B Fbg Sensor Designmentioning

confidence: 99%

A Novel FBG-Based Triggering System for Cardiac MR Imaging at 3 Tesla: A Pilot Pre-Clinical Study

et al. 2020

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“…This article introduces 3 different FBG sensors that differ in their form of encapsulation. These sensors have been presented individually by our author collective in previous research (chest-placed PDMS sensor [12], the fiberglass sensor (fiberglass is a composite material made up of glass fiber (fabric) and cured synthetic resin [13]) and PDMS PAD placed on the back [14]). This publication presents the original results by comparing these sensors simultaneously among each other in contrast to the conventional, clinically-used respiratory belt (RB) during monitoring the breathing frequency of the human body.…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Breath Sensors: A Comparison Study

Nedoma

Fajkus

Martínek

2019

JBBBE

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The paper presents a comparative study of three fiber optic sensors based on the fiber Bragg grating (FBG). The basic monitored parameter is the respiratory rate of the human body. Fiber-optic sensors are immune to electromagnetic interference (EMI). This fact singles them out as ideal for use in magnetic resonance environments (typically in MRI - magnetic resonance imaging) as a prediction of hyperventilation states in patients. These patient conditions arise as a result of the closed tunnel environment in MR scanners. The results (10 volunteers with written consent) were compared with the results using the conventional respiratory belt (RB) in a laboratory environment and processed using the objective Bland-Altman (B-A) method.

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Analysis of encapsulation the fiber Bragg sensors for biomedical applications

Cited by 2 publications

References 7 publications

A Novel FBG-Based Triggering System for Cardiac MR Imaging at 3 Tesla: A Pilot Pre-Clinical Study

A Novel FBG-Based Triggering System for Cardiac MR Imaging at 3 Tesla: A Pilot Pre-Clinical Study

Fiber-Optic Breath Sensors: A Comparison Study

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