Wearable Magnetoencephalography (MEG)

Matt Brookes and his team take another giant step forward towards building a practical MEG scanner. In their latest work published in Nature [1], E. Boto and coworkers show that not only is it possible to build a high-performance MEG scanner with non-cryogenic sensors (QZFM) but that you can ‘wear’ the scanner and collect data while… Read more »

Filled under: QZFM

Trace Detection of Magnetic Nanoparticles in Complex Fluids using QZFM

A promising application of nanoparticles in medicine is magnetic nanoparticle (MNP) based blood purification (MPBP). In this technique, MNPs are functionalized with antibodies that bind to unwanted (preselected) toxins, cells or proteins in the blood. The bound particles are then removed using a strong magnet, thus selectively filtering the blood. For safety reasons, it is important… Read more »

Filled under: QZFM

fMCG Clinical Results from U. Wisconsin

Fetal magnetocardiography (fMCG) is an innovative and emerging diagnostic utility aimed at the early identification of fetal heart problems. Its efficacy for diagnosis and management of serious fetal arrhythmia has been acknowledged in the recent American Heart Association Statement on Diagnosis and Treatment of Fetal Cardiac Disease. In 2016, an experimental fetal MCG system with a… Read more »

Filled under: QZFM

Genetesis CardioFlux MCG System powered by QZFM

Genetesis is developing CardioFlux –  a clinical grade Magnetocardiography system powered by QuSpin QZFM sensors. The CardioFlux magnetic shield system is a cylindrical open end design (seen below) capable of attenuating background magnetic noise sufficiently to allow the CardioFlux to be installed in just about any clinical environment. The image below shows initial data recordings… Read more »

Filled under: QZFM

QZFM: Multichannel MEG recordings

We report the latest results from a Wellcome Trust-funded collaborative project between the University of Nottingham and the University College of London investigating OPM based multichannel MEG to be presented at the Workshop on Optically Pumped Magnetometers (WOPM ‘17). Elena Boto and coworkers at Nottingham report, “We have shown the ability to beamform sources to… Read more »

Filled under: QZFM

QTFM with high sensitivity and excellent low-frequency stability

An ideal sensor is stable and exhibits very low drift between the measured value and the actual value, a task often difficult to achieve at low frequencies over long measurement times. Our QTFM attains high, low-frequency stability and high sensitivity by implementing low-noise/low-drift electronics, and by stabilizing to a high degree every operating parameter of the… Read more »

Filled under: QTFM

First public demonstration of QTFM

QuSpin’s first public demonstration of our QTFM magnetometer product was at the Navy Forum for SBIR/STTR Transition held April 3-5, 2017 at the Gaylord Convention Center in National Harbor, MD. This demonstration showcased the progress QuSpin has made in the Phase I and Phase II development towards Navy SBIR topic N141-004. The high-sensitivity mags are small, low… Read more »

Filled under: QTFM

Towards full-head OPM based MEG at University of Nottingham/UCL

  In an important step towards building a full-head MEG system with OPMs, researchers at University of Nottingham and University College of London published results on their studies with a single OPM channel. A custom 3D printed MEG helmet was fabricated with slots to hold OPM at various locations. MEG evoked response was measured from 13 different… Read more »

Filled under: QZFM

Magnetic Microscope

Young Kim and Igor Savukov at Los Alamos National Labs demonstrate a new room temperature magnetic microscope. They used QZFM as the sensor element and a ferrite flux guide to transport magnetic field from a tiny test object to the sensor. In their experimental work, the authors used a 0.75 mm coil as the test… Read more »

Filled under: QZFM

Fetal MCG: Simultaneous measurements with SQUID and OPMs

Hari Eswaran and coworkers at the University of Arkansas published results from a head-on comparison between fetal Magnetocardiography recordings made with a SQUID system (CTF, 151 sensor SARA) and an OPM system (QuSpin, 2 sensors). The authors conclude: “Our preliminary results indicate that OPMs are potentially capable of replacing SQUIDs for fMCG systems. With further studies, we… Read more »

Filled under: QZFM