Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry

Abstract In the new generation of blood velocimeter systems, considerable attention has been paid to atomic magnetometers due to their high resolution and high sensitivity for detection of magnetic tracers. Passing the magnetic tracers adjacent to the atomic magnetometer produces a spike-like signal...

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Autores principales:	Asieh Soheilian, Mohammad Mehdi Tehranchi, Maliheh Ranjbaran
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/13e4bf10489f4a338268a4be5c7760aa
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spelling	oai:doaj.org-article:13e4bf10489f4a338268a4be5c7760aa2021-12-02T13:27:08ZDetection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry10.1038/s41598-021-86358-02045-2322https://doaj.org/article/13e4bf10489f4a338268a4be5c7760aa2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86358-0https://doaj.org/toc/2045-2322Abstract In the new generation of blood velocimeter systems, considerable attention has been paid to atomic magnetometers due to their high resolution and high sensitivity for detection of magnetic tracers. Passing the magnetic tracers adjacent to the atomic magnetometer produces a spike-like signal, the shape of which depends on the position of the tracer, as well as its velocity and orientation. The present study aimed to evaluate the effect of abrupt variations in the instantaneous velocity of the magnetic tracer on the magnetometer response compare to constant velocity. Modeling the magnetic tracer as a dipole moment indicated that the velocity dependence of the magnetic field and local magnetic field gradient associated with moving magnetic tracer cause the spike-like signal to go out of symmetry in the case of variable velocity. Based on the experimental results, any instantaneous variation in tracer velocity leads to shrinkage in the signal width. The behavior has been studied for both magnetic microwire with variable instantaneous velocity and magnetic droplets in stenosis artery phantom. In addition, the position of the tracer could be detected by following the shrinkage behavior which may occur on the peak, valley, or both. These advantageous outcomes can be applied for high sensitivity diagnosis of arterial stenosis.Asieh SoheilianMohammad Mehdi TehranchiMaliheh RanjbaranNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Asieh Soheilian Mohammad Mehdi Tehranchi Maliheh Ranjbaran Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry
description	Abstract In the new generation of blood velocimeter systems, considerable attention has been paid to atomic magnetometers due to their high resolution and high sensitivity for detection of magnetic tracers. Passing the magnetic tracers adjacent to the atomic magnetometer produces a spike-like signal, the shape of which depends on the position of the tracer, as well as its velocity and orientation. The present study aimed to evaluate the effect of abrupt variations in the instantaneous velocity of the magnetic tracer on the magnetometer response compare to constant velocity. Modeling the magnetic tracer as a dipole moment indicated that the velocity dependence of the magnetic field and local magnetic field gradient associated with moving magnetic tracer cause the spike-like signal to go out of symmetry in the case of variable velocity. Based on the experimental results, any instantaneous variation in tracer velocity leads to shrinkage in the signal width. The behavior has been studied for both magnetic microwire with variable instantaneous velocity and magnetic droplets in stenosis artery phantom. In addition, the position of the tracer could be detected by following the shrinkage behavior which may occur on the peak, valley, or both. These advantageous outcomes can be applied for high sensitivity diagnosis of arterial stenosis.
format	article
author	Asieh Soheilian Mohammad Mehdi Tehranchi Maliheh Ranjbaran
author_facet	Asieh Soheilian Mohammad Mehdi Tehranchi Maliheh Ranjbaran
author_sort	Asieh Soheilian
title	Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry
title_short	Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry
title_full	Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry
title_fullStr	Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry
title_full_unstemmed	Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry
title_sort	detection of magnetic tracers with mx atomic magnetometer for application to blood velocimetry
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/13e4bf10489f4a338268a4be5c7760aa
work_keys_str_mv	AT asiehsoheilian detectionofmagnetictracerswithmxatomicmagnetometerforapplicationtobloodvelocimetry AT mohammadmehditehranchi detectionofmagnetictracerswithmxatomicmagnetometerforapplicationtobloodvelocimetry AT malihehranjbaran detectionofmagnetictracerswithmxatomicmagnetometerforapplicationtobloodvelocimetry
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Detection of magnetic tracers with Mx atomic magnetometer for application to blood velocimetry

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