A home‐built digital optical <scp>MRI</scp> console using high‐speed serial links

Tang, Weinan; Wang, Weimin; Liu, Wentao; Ma, Yajun; Tang, Xin; Liang, Xiao; Gao, Jia‐Hong

doi:10.1002/mrm.25403

Cited by 11 publications

(7 citation statements)

References 24 publications

(40 reference statements)

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“…These drawbacks limit prototype production by a wider community and hinder new developments. To overcome these limitations, several home‐spun designs have emerged during the last decade, mainly based on field programmable gate arrays (FPGAs) 29–36 . The MaRCoS initiative is an attempt to centralize these efforts to become a versatile, low‐cost, and open‐source solution fostering the development of present and future LF‐MRI technologies.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome these limitations, several home‐spun designs have emerged during the last decade, mainly based on field programmable gate arrays (FPGAs). 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 The MaRCoS initiative is an attempt to centralize these efforts to become a versatile, low‐cost, and open‐source solution fostering the development of present and future LF‐MRI technologies. The MaRCoS community is therefore open and has the ambition of expanding the range of tools this platform provides as new needs arise.…”

Section: Introductionmentioning

confidence: 99%

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Benchmarking the performance of a low‐cost magnetic resonance control system at multiple sites in the open MaRCoS community

et al. 2022

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Purpose: To describe the current properties and capabilities of an open-source hardware and software package that is being developed by many sites internationally with the aim of providing an inexpensive yet flexible platform for low-cost MRI.Methods: This article describes three different setups from 50 to 360 mT in different settings, all of which used the MaRCoS console for acquiring data, and different types of software interface (custom-built GUI or Pulseq overlay) to acquire it.Results: Images are presented both from phantoms and in vivo from healthy volunteers to demonstrate the image quality that can be obtained from the MaRCoS hardware/software interfaced to different low-field magnets. Conclusions:The results presented here show that a number of different sequences commonly used in the clinic can be programmed into an open-source system relatively quickly and easily, and can produce good quality images even at this early stage of development. Both the hardware and software will continue to develop, and it is an aim of this article to encourage other groups to join this international consortium.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Benchmarking the performance of a low‐cost magnetic resonance control system at multiple sites in the open MaRCoS community

et al. 2022

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“…This technique was applied for single receive elements at 0.18 and 4.7 T [36,37]. Multichannel scalable solutions in combination with optical fibers were proposed for in-field receivers with one ADC per coil element at 1.5 and 3 T [18,19], and four-channel ADCs for MRI up to 2.4 T with an eight-channel coil [38,39]. Recent research also demonstrated a digital RF front end adaptable for 16 channels and useable from 1.5 to 11.7 T [20,22].…”

Section: Signal Digitizationmentioning

confidence: 99%

Perspectives in Wireless Radio Frequency Coil Development for Magnetic Resonance Imaging

et al. 2020

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This paper addresses the scientific and technological challenges related to the development of wireless radio frequency (RF) coils for magnetic resonance imaging (MRI) based on published literature together with the authors' interpretation and further considerations. Key requirements and possible strategies for the wireless implementation of three important subsystems, namely the MR receive signal chain, control signaling, and on-coil power supply, are presented and discussed. For RF signals of modern MRI setups (e.g., 3 T, 64 RF receive channels), with on-coil digitization and advanced methods for dynamic range (DR ≥ 16-bit) and data rate compression, still data rates > 500 Mbps will be required. 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. Besides RF signals, control signals for on-coil components, e.g., active detuning, synchronization to the MR system, and B 0 shimming, have to be managed. Wireless power supply becomes an important issue, especially with a large amount of additional on-coil components. 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. In our opinion, completely wireless RF coils will ultimately become feasible in the future by combining efficient available strategies from recent scientific advances and novel research. Besides ongoing improvement of all three subsystems, innovations are specifically required regarding wireless technologies, MR compatibility, and wireless power supply.

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“…Among the projects opened to the community [2], [18]- [24], the Open-source Console for Real-time Acquistion (OCRA [21]) is notable for its flexibility, inexpensive off-the-shelf components, community focus, and real-time capabilities. The MAgnetic Resonance COntrol System (MaRCoS [3]) uses the same versatile hardware, however its software, firmware and FPGA firmware have been replaced to go beyond the limitations of OCRA.…”

Section: Introductionmentioning

confidence: 99%

MaRCoS, an open-source electronic control system for low-field MRI

Negnevitsky¹,

Vives‐Gilabert²,

Algarin³

et al. 2022

Preprint

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Every magnetic resonance imaging (MRI) device requires an electronic control system that handles pulse sequences and signal detection and processing. Here we provide details on the architecture and performance of MaRCoS, a MAgnetic Resonance COntrol System developed by an open international community of low-field MRI researchers. MaRCoS is inexpensive and can handle cycle-accurate sequences without hard length limitations, rapid bursts of events, and arbitrary waveforms. It can also be easily adapted to meet further specifications required by the various academic and private institutions participating in its development. We describe the MaRCoS hardware, firmware and software that enable all of the above, including a Python-based graphical user interface for pulse sequence implementation, data processing and image reconstruction. II. SYSTEM GOALS AND OVERVIEWMaRCoS was started by a partnership of low-field MRI academic groups [3] aiming to replace a range of proprietary consoles with a unified, inexpensive yet high-performance platform suitable for some unconventional experiments.

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A home‐built digital optical MRI console using high‐speed serial links

Abstract: A homemade digital optical MRI console with high-speed serial interconnection has been developed to better serve imaging research and clinical applications.

Cited by 11 publications

References 24 publications

Benchmarking the performance of a low‐cost magnetic resonance control system at multiple sites in the open MaRCoS community

Benchmarking the performance of a low‐cost magnetic resonance control system at multiple sites in the open MaRCoS community

Perspectives in Wireless Radio Frequency Coil Development for Magnetic Resonance Imaging

MaRCoS, an open-source electronic control system for low-field MRI

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