6 papers
Qualitative and quantitative hard-tissue MRI with portable Halbach scanners
Jose Borreguero, Luiz G. C. Santos, Lorena Vega Cid +14
Purpose: To demonstrate the feasibility of performing in-vivo imaging and quantitative relaxation mapping of soft and hard tissues using a low-cost, portable MRI scanner, and to es…
Comment on electromagnetic noise cancellation in low-field MRI systems (arXiv:2509.05955v1, 2406.17804v3, 2210.06730v2, and related works)
Joseba Alonso, José M. AlgarÃn, Teresa Guallart-Naval
In this Comment, we discuss recent approaches to electromagnetic interference (EMI) mitigation in low-field Magnetic Resonance Imaging (LF-MRI), as presented in arXiv preprints 250…
High-resolution ultra-low-field MRI with SNRAware denoising
Teresa Guallart-Naval, Hui Xue, José M. AlgarÃn +8
Ultra-low-field (ULF, <0.1 T) magnetic resonance imaging (MRI) systems offer advantages in cost, portability, and accessibility, but their current utility is still limited by low s…
Electromagnetic Noise Characterization and Suppression in Low-Field MRI Systems
Teresa Guallart-Naval, José M. AlgarÃn, Joseba Alonso
Purpose: Low-field MRI systems operate at single MHz-range frequencies, where signal losses are primarily dominated by thermal noise from the radio-frequency (RF) receive coils. Ac…
In-vivo imaging with a low-cost MRI scanner and cloud data processing in low-resource settings
Teresa Guallart-Naval, Robert Asiimwe, Patricia Tusiime +16
Purpose: To demonstrate in-vivo imaging with a low-cost, low-field MRI scanner built and operated in Africa, and to show how systematic hardware and software improvements can mitig…
Subject grounding to reduce electromagnetic interference for MRI scanners operating in unshielded environments
Beatrice Lena, Bart de Vos, Teresa Guallart-Naval +6
Purpose. Portable low-field (< 0.1 T) MRI is increasingly used for point-of-care imaging, but electromagnetic interference (EMI) presents a significant challenge, especially in uns…