Improved depth sensitivity by separation of excitation and detection coils

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Abstract

A laparoscopic probe for magnetic sentinel node biopsy has been developed. Superparamagnetic iron oxide nanoparticles (SPIONs) are used as a tracer. They are selectively detected by Differential Magnetometry (DiffMag). Excitation and detection coils are separated. To make this possible, we developed active compensation, which removes influence of the excitation field. Separation of coils leads to improved depth sensitivity, from 20 mm with our handheld probe to 80 mm with our novel laparoscopic probe. As stated by Biot-Savart law, we win a factor distance to the third power by separating the excitation and detection part of the system.
Original languageEnglish
Publication statusPublished - 18 Mar 2019
Event9th International Workshop on Magnetic Particle Imaging 2019 - New York, United States
Duration: 17 Mar 201919 Mar 2019
Conference number: 9

Conference

Conference9th International Workshop on Magnetic Particle Imaging 2019
Abbreviated titleIWMPI 2019
CountryUnited States
CityNew York
Period17/03/1919/03/19

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    van de Loosdrecht, M. M., Krooshoop, H. J. G., & ten Haken, B. (2019). Improved depth sensitivity by separation of excitation and detection coils. Abstract from 9th International Workshop on Magnetic Particle Imaging 2019, New York, United States.