Numerical Analysis of Eddy Current Distribution in Submental Region Induced by Magnetic Stimulation for Treating Dysphagia

Mori, Hidemaro; Kagaya, Hitoshi; Inamoto, Yoko; Izumi, Shin-ichi; Yashima, Kenji; Takagi, Toshiyuki

doi:10.1109/tnsre.2020.2981399

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…The U-shaped coil usually contains a ferrite core that constitute the magnetic circuit and concentrates the magnetic field beneath the two ends, which increases the signal amplitude caused by the defects [113][114][115]. The planar coil fabricated by flexible printed circuit (FPC) and printing electronic technology (PET) elevates the detection capability of micro-surface defects [116,117].…”

Section: Rotating Field Coils (Varying With Time)mentioning

confidence: 99%

Eddy Current Measurement for Planar Structures

Xia

Huang

Chen

et al. 2022

Sensors

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Eddy current (EC) testing has become one of the most common techniques for measuring metallic planar structures in various industrial scenarios such as infrastructures, automotive, manufacturing, and chemical engineering. There has been significant progress in measuring the geometry, electromagnetic properties, and defects of metallic planar structures based on electromagnetic principles. In this review, we summarize recent developments in EC computational models, systems, algorithms, and measurement approaches for planar structures. First, the computational models including analytical models, numerical methods, and plate property estimation algorithms are introduced. Subsequently, the impedance measurement system and probes are presented. In plate measurements, sensor signals are sensitive to probe lift-off, and various algorithms for reducing the lift-off effect are reviewed. These approaches can be used for measureing thickness and electromagnetic properties. Furthermore, defect detection for metallic plates is also discussed.

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Section: Rotating Field Coils (Varying With Time)mentioning

confidence: 99%

Eddy Current Measurement for Planar Structures

Xia

Huang

Chen

et al. 2022

Sensors

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“…However, due to the complex distribution of electrical property parameters of tissues [9] and anisotropy of electrical conductivity, the distribution of electrical stimulation current in tissues is unknown [10], [11]. There is still no real-time monitoring method for the distribution of stimulation current in tissues, which can only be indirectly observed through physiological effects such as limb response during stimulation.…”

Section: Introductionmentioning

confidence: 99%

A Preliminary Study on Non-Invasive Detection of Electrical Stimulation Current Based on Magneto-Acoustic Effect

Mai

Wang

Yin

et al. 2022

IEEE Trans. Neural Syst. Rehabil. Eng.

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“…We have developed a coil capable of selectively stimulating the suprahyoid muscles using peripheral magnetic stimulation. [8][9][10] In vivo, magnetic stimulation induces eddy currents via electromagnetic induction. Magnetic stimulation is less painful than electrical stimulation, because it does not irritate the nociceptors in the skin.…”

Section: Introductionmentioning

confidence: 99%

Effect of electromyography‐triggered peripheral magnetic stimulation on voluntary swallow in healthy humans

Nagashima

Kagaya

Toda

et al. 2021

J of Oral Rehabilitation

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Background: Electrical stimulation therapy is effective for patients with dysphagia. However, because of the pain, strong stimulation cannot be applied. Although magnetic stimulation induces less pain, there are no reports on magnetic stimulation being synchronised with a swallowing reflex.Objective: This study aimed to determine whether it is possible to induce magnetic stimulation during a voluntary swallowing using electromyography (EMG)-triggered peripheral magnetic stimulation and to evaluate its effect on healthy individuals.Methods: A total of 20 healthy adults in seated position were instructed to swallow saliva and 10 ml of barium under videofluoroscopy. For concomitant use of magnetic stimulation, a magnetic stimulus for suprahyoid muscles at 30 Hz frequency was applied for 2 s when the EMG level in the sternohyoid muscle exceeded the threshold. During the voluntary swallowing, the movement of the hyoid bone and opening width of the upper oesophageal sphincter (UES) were measured. Furthermore, pressure topography was evaluated in 6 subjects using high-resolution manometry. Results:The magnetic stimulation significantly extended the movement time of the hyoid bone (p < 0.001). During liquid deglutition, significant increases were observed in the anterior maximum movement distance of the hyoid bone (p < 0.05), opening width of the UES (p < 0.001) and anterior movement distance of the hyoid bone at the maximum UES opening (p < 0.01). In the pressure topography, the maximum pressure immediately after UES closure significantly decreased with magnetic stimulation (p < 0.05). Conclusion:EMG-triggered peripheral magnetic stimulation made it possible to apply magnetic stimulation during a voluntary swallowing.

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Numerical Analysis of Eddy Current Distribution in Submental Region Induced by Magnetic Stimulation for Treating Dysphagia

Cited by 8 publications

References 23 publications

Eddy Current Measurement for Planar Structures

Eddy Current Measurement for Planar Structures

A Preliminary Study on Non-Invasive Detection of Electrical Stimulation Current Based on Magneto-Acoustic Effect

Effect of electromyography‐triggered peripheral magnetic stimulation on voluntary swallow in healthy humans

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