NDLI: B-field energy dependent phase lag dispersion in magnetomotive ultrasound imaging

Content Provider	IEEE Xplore Digital Library
Author	Andersson, R. Cinthio, M. Evertsson, M. Toftevall, H. Wahlstrom, A. Fredriksson, S. Nybom, G. Jansson, T.
Copyright Year	2015
Description	Author affiliation: Geccodots AB, Lund, Sweden (Toftevall, H.) \|\| Biomed. Eng., Lund Univ., Lund, Sweden (Andersson, R.; Cinthio, M.; Evertsson, M.; Fredriksson, S.) \|\| Lundinova AB, Lund, Sweden (Wahlstrom, A.) \|\| Clinical Sci. Lund, Lund Univ., Lund, Sweden (Jansson, T.) \|\| JOIN Bus. & Technol. AB, Lund, Sweden (Nybom, G.)
Abstract	Magnetomotive ultrasound imaging is an emerging technique where superparamagnetic iron oxide nanoparticles can be used as an ultrasound contrast agent. A time-varying external magnetic field acts to move tissue embedded particles, and ultrasound is used to detect the resulting tissue movement. In experimental phantom studies we have observed a phase lag dispersion in the magnetomotive response in respect to applied time-varying magnetic field (B-field). We hypothesize that this dispersion is triggered by the strength of the applied B-field in combination with concentration of embedded nanoparticles in the region. The cohort response of the nanoparticles aligns as the magnetic field gets more energetic. Moreover, the tightening of the phase response indicate an asymptotic tapering towards a phase limit.
Starting Page	1
Ending Page	4
File Size	596060
Page Count	4
File Format	PDF
e-ISBN	9781479981823
DOI	10.1109/ULTSYM.2015.0322
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-10-21
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Nanoparticles Magnetic resonance imaging Magnetic fields Ultrasonic imaging Phantoms Magnetic flux Iron nanoparticles molecular imaging contrast agents superparamagnetic iron oxide
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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