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MRI Powered and Triggered Current Stimulator for Concurrent Stimulation and MRI [article]

Ranajay Mandal, Nishant B Babaria, Jiayue Cao, Kun-Han Lu, Zhongming Liu
2019 bioRxiv   pre-print
Results from testing it with phantoms and live animals in a 7 Tesla small-animal MRI system suggest that the device is able to harvest up to 72 (or 18) mW power during typical echo-planar imaging (or fast  ...  Bioelectric stimulation during concurrent magnetic resonance imaging (MRI) is of interest to basic and translational studies.  ...  (d) Wireless power from MRI gradients varied with load impedance and imaging protocols. Peak power of 72mW, harvested during EPI and 18mW during FLASH imaging.  ... 
doi:10.1101/715805 fatcat:on6osidshbd35m5lmgiaa5gicm

Energy harvesting coil for circularly polarized fields in magnetic resonance imaging [article]

Pavel Seregin, Oleg Burmistrov, Georgiy Solomakha, Egor Kretov, Nikita Olekhno, Alexey Slobozhanyuk
2021 arXiv   pre-print
common wireless power transfer realizations.  ...  One of the promising concepts in wireless MRI coils is energy harvesting that relies on converting the energy carried by the radio-frequency MRI field without the need for additional transmitters as in  ...  Thus, various wireless alternatives are actively studied, including wireless power transfer (WPT) [2] [3] [4] [5] [6] [7] [8] , wireless MRI coil [9] and MRI energy harvesting [10] .  ... 
arXiv:2106.06886v1 fatcat:oj55kopkkzbyvk2m6wdcjtsyte

Perspectives in Wireless Radio Frequency Coil Development for Magnetic Resonance Imaging

Lena Nohava, Jean-Christophe Ginefri, Georges Willoquet, Elmar Laistler, Roberta Frass-Kriegl
2020 Frontiers in Physics  
Wireless power transfer systems (>10 W) seem to be an attractive solution compared to bulky MR-compatible batteries and energy harvesting with low power output.  ...  For wireless high-speed MR data transmission, 60 GHz WiGig and optical wireless communication appear to be suitable strategies; however, on-coil functionality during MRI scans remains to be verified.  ...  For MRI, WPT in the RF range and energy harvesting have been investigated as attractive alternatives.  ... 
doi:10.3389/fphy.2020.00011 fatcat:f3ilbbiisbaehbddvqzdledpju

Magnetic Resonance Imaging‐Compatible Optically Powered Miniature Wireless Modular Lorentz Force Actuators

Senol Mutlu, Oncay Yasa, Onder Erin, Metin Sitti
2020 Advanced Science  
Here, a miniature, MRI-compatible, and optically powered wireless Lorentz force actuator module consisting of a solar cell and a coil with a small volume of 2.5 × 2.5 × 3.0 mm3 is proposed.  ...  Many of such actuator modules can be used to create various wireless active structures for future interventional MRI applications, such as positioning needles, markers, or other medical tools on the skin  ...  during complex medical procedures.  ... 
doi:10.1002/advs.202002948 pmid:33511017 pmcid:PMC7816712 fatcat:m7gbrapmfjf7vgj55nblomifya

Adaptive and Wireless Recordings of Electrophysiological Signals during Concurrent Magnetic Resonance Imaging [article]

Ranajay Mandal, Nishant Babaria, Jiayue Cao, Zhongming Liu
2018 bioRxiv   pre-print
The transmitted data is readily separable from MRI in the frequency domain.  ...  Here, we present a miniaturized, wireless platform - "MR-Link" (Multimodal Recording Link) that provides a hardware solution for simultaneous electrophysiological and fMRI signal acquisition.  ...  One such attractive method is wirelessly powering the device by harvesting energy from the strong magnetic flux generated by MRI [47] .  ... 
doi:10.1101/259762 fatcat:peb6lbklarbdflfu5qdjtqqdxq

IEEE Access Special Section Editorial: Energy Harvesting Technologies for Wearable and Implantable Devices

Hadi Heidari, Mehmet Ozturk, Rami Ghannam, Man-Kay Law, Hamideh Khanbareh, Abdul Halim Miah
2021 IEEE Access  
and power management in consideration.  ...  Furthermore, these devices have been integrated with wireless communication technologies to enable the transmission of both signals and energy.  ...  wirelessly pumped power to amplify MRI signals.  ... 
doi:10.1109/access.2021.3088622 fatcat:c2xjc4rsxjcutbkszos7njns6a

Wireless, battery-free, fully implantable multimodal and multisite pacemakers for applications in small animal models

Philipp Gutruf, Rose T. Yin, K. Benjamin Lee, Jokubas Ausra, Jaclyn A. Brennan, Yun Qiao, Zhaoqian Xie, Roberto Peralta, Olivia Talarico, Alejandro Murillo, Sheena W. Chen, John P. Leshock (+8 others)
2019 Nature Communications  
Here, we introduce a highly miniaturized wireless energy-harvesting and digital communication electronics for thin, miniaturized pacing platforms weighing 110 mg with capabilities for subdermal implantation  ...  Electrical characterization shows high timing accuracy during wireless and battery-free operation (Fig. 2e ), facilitated by a wireless power supply that exceeds the power consumption of the device (  ...  The maximum stimulation capabilities depend on the power that can be harvested wirelessly.  ... 
doi:10.1038/s41467-019-13637-w pmid:31848334 pmcid:PMC6917818 fatcat:vkwd4wtwzvgmpofevg34icpro4

A Health Care Monitoring System with Wireless Body Area Network using IoT

2017 International Journal of Recent Trends in Engineering and Research  
For healthcare monitoring application a wireless body area network is implemented.  ...  power up the sensors more and extends its lifetime.  ...  A wearable sensor prototype were introduced in [14], capable of measuring heart rate, blood oxygen saturation, temperature and humidity during a magnetic resonance imaging (MRI).A middleware solution for  ... 
doi:10.23883/ijrter.2017.3499.edo9r fatcat:cpb36dgwjjcjzawrntpv3ceeba

Wireless MRI‐Powered Reversible Orientation‐Locking Capsule Robot

Onder Erin, Mustafa Boyvat, Jelena Lazovic, Mehmet Efe Tiryaki, Metin Sitti
2021 Advanced Science  
However, the rotational motion capabilities of MRI-powered wireless magnetic capsule-type robots have been limited due to the very high axial magnetic field inside the MRI scanner.  ...  Controlled and on-demand hyperthermia and drug delivery using wireless power transfer-based Joule heating induced by external alternating magnetic fields are the additional features of this robot.  ...  wax, Jonathan Fiene and Martin Phelan for helping the MRI sliding stage setup, Kaylen Richardson for helping the MRI imaging, and Seyhan Sitti for helping the manufacturing of the robot components.  ... 
doi:10.1002/advs.202100463 pmid:35478933 pmcid:PMC7612672 fatcat:le4at4yltjboxi4264xxrkddde

Wireless Charging Solution of Mobile Phone Batteries using Microwaves via Cellular Communication

Ruchika Sharma, Manisha Kumawat
2020 Zenodo  
The microwave signal is transmitted from the high power microwave generator Magnetor which acts as a transmitter with the help of a slotted waveguide antenna and transmits the power along with the message  ...  This entire process is done by the employment of microwaves and RF energy harvesting in an eco friendly way.  ...  Due to advancements, small microwave devices use rectenna as a power source. They are used in RF energy harvesting in the form of wireless power transmission that transmits energy by radio waves.  ... 
doi:10.5281/zenodo.3892385 fatcat:oieib57qxraixis3rp4enowfxm

Fully implantable optoelectronic systems for battery-free, multimodal operation in neuroscience research

Philipp Gutruf, Vaishnavi Krishnamurthi, Abraham Vázquez-Guardado, Zhaoqian Xie, Anthony Banks, Chun-Ju Su, Yeshou Xu, Chad R. Haney, Emily A. Waters, Irawati Kandela, Siddharth R. Krishnan, Tyler Ray (+4 others)
2018 Nature Electronics  
power harvesting with full user-programmability over individual devices or collections of them, in integrated platforms that have sizes and weights not significantly larger than those of previous, passive  ...  This paper introduces a series of important concepts in integrated circuit and antenna design which, taken together, enable low power operation, energy efficient and position and angle independent wireless  ...  Attenuating tissues and structures found in the body such as optically and acoustically scattering media can prohibit use of other wireless power harvesting schemes based on optics and acoustics, especially  ... 
doi:10.1038/s41928-018-0175-0 fatcat:rtlbi5icvje5pj4fahfjxibdku

A Millimeter-Wave Digital Link for Wireless MRI

Kamal Aggarwal, Kiran R. Joshi, Yashar Rajavi, Mazhareddin Taghivand, John M. Pauly, Ada S. Y. Poon, Greig Scott
2017 IEEE Transactions on Medical Imaging  
This results in a sub-optimal solution for wireless MRI in terms of power consumption and size. Typical MRI bore diameters vary from 60 cm to 70 cm.  ...  Here, we propose a custom millimeter (mm) wave transceiver architecture that meets the requirements for wireless MRI data rates at minimum power consumption and size. A block diagram is shown in Fig.  ...  Conclusion We have proposed a 60 GHz short-range radio system that offers a low power and scalable solution for wireless MRI digital links.  ... 
doi:10.1109/tmi.2016.2622251 pmid:27810803 pmcid:PMC5709036 fatcat:ukv7d6tecjez7pjk54rral5aiy

Recent progress on peripheral neural interface technology towards bioelectronic medicine

Youngjun Cho, Jaeu Park, Chengkuo Lee, Sanghoon Lee
2020 Bioelectronic Medicine  
Also, we reveal the current status of wireless neural interface for peripheral nerve applications.  ...  For instance, a study was conducted to measure the PNS threshold through simulation to avoid peripheral nerve stimulation during MRI measurement.  ...  Two-dimensional profile of the gradients in the vertical and horizontal directions (right). g Illustration of simulation result indicating the threshold of peripheral nerve stimulation during MRI measurement  ... 
doi:10.1186/s42234-020-00059-z pmid:33292861 fatcat:fwhdt4ryqfarpfiuu2oclaihri

Power Challenges in Wireless Body Area Network for Mobile Health Powered by Human Energy Harvesting: A Survey

Harmandeep Singh Sangha, Harsh Sohal
2016 Indian Journal of Science and Technology  
Objectives: This survey of energy harvesting techniques is carried out with an aim to select the best combination of energy harvesting techniques in Wireless Body Area Networks (WBAN).  ...  The harvesting technique most suitable for healthcare monitoring applications is piezoelectric harvester as it provides significant power to miniaturizing electronic devices while being small and efficient  ...  The wireless interface consumes a considerable amount of energy during the transmission of data to a remote location.  ... 
doi:10.17485/ijst/2016/v9i46/106912 fatcat:kyawafkhdzf6lnsca5p3sgt5yy

An Intracortical Implantable Brain-Computer Interface for Telemetric Real-Time Recording and Manipulation of Neuronal Circuits for Closed-Loop Intervention

Hamed Zaer, Ashlesha Deshmukh, Dariusz Orlowski, Wei Fan, Pierre-Hugues Prouvot, Andreas Nørgaard Glud, Morten Bjørn Jensen, Esben Schjødt Worm, Slávka Lukacova, Trine Werenberg Mikkelsen, Lise Moberg Fitting, John R. Adler (+7 others)
2021 Frontiers in Human Neuroscience  
The ability to wireless induction charging combined with the entirely implantable design, the rather high recording bandwidth, and the ability to record and stimulate simultaneously put forward a wireless  ...  The animal was stereotactically irradiated at the level of the visual cortex upon defining the target by a fused cerebral MRI and CT scan.  ...  The wireless induction charging system consists of a loosely coupled transmitter and receiver coils. The receiver coil is placed in the implantable capsule along with the power harvester electronics.  ... 
doi:10.3389/fnhum.2021.618626 pmid:33613212 pmcid:PMC7887289 fatcat:ln74ebqkfzeexpoqoq7qkgcdzu
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