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Type: Journal article
Title: Novel handheld magnetometer probe based on magnetic tunnelling junction sensors for intraoperative sentinel lymph node identification
Author: Cousins, A.
Balalis, G.
Thompson, S.
Forero Morales, D.
Mohtar, A.
Wedding, A.
Thierry, B.
Citation: Scientific Reports, 2015; 5(1):10842-1-10842-10
Publisher: Nature Publishing Group
Issue Date: 2015
ISSN: 2045-2322
Statement of
A Cousins, G.L. Balalis, S.K. Thompson, D. Forero Morales, A. Mohtar, A.B. Wedding, B. Thierry
Abstract: Using magnetic tunnelling junction sensors, a novel magnetometer probe for the identification of the sentinel lymph node using magnetic tracers was developed. Probe performance was characterised in vitro and validated in a preclinical swine model. Compared to conventional gamma probes, the magnetometer probe showed excellent spatial resolution of 4.0 mm, and the potential to detect as few as 5 μg of magnetic tracer. Due to the high sensitivity of the magnetometer, all first-tier nodes were identified in the preclinical experiments, and there were no instances of false positive or false negative detection. Furthermore, these preliminary data encourage the application of the magnetometer probe for use in more complex lymphatic environments, such as in gastrointestinal cancers, where the sentinel node is often in close proximity to other non-sentinel nodes, and high spatial resolution detection is required.
Keywords: Lymph nodes; diagnositc imaging
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
RMID: 0030038497
DOI: 10.1038/srep10842
Appears in Collections:Surgery publications

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