Fast method of locating metallic foreign body in the human body

Abstract

Metallic foreign body penetration remains a common clinical problem, which always leads to more suffering of patients and difficulties of doctors' management. Considering the drawbacks and limitations of traditional radiological detection, we present a fast method in this paper based on gradient measurement of cheap fluxgate sensors. A theoretical model for locating ferromagnetic and nonferromagnetic metal was elaborated and experimentally validated. A non-magnetic steel skeleton bound with metglas ribbons was chosen and digital signal processor was utilized to design magnetic exciting and signal processing algorithm, which provided a better fluxgate performance. A good symmetric configuration between the two sensors has been demonstrated through the calibration experiment, which lays the foundation for further animal and clinical experiment.

Magnetic Field Sensors Based on Microelectromechanical Systems (MEMS) Technology

“…Microfluxgate sensors based on MEMS technology can be employed to build cheap and portable systems for locating metallic foreign objects in the human body (Jing et al 2009). …”

Modelagem De Corpos Estranhos Magnéticos E Solução Do Problema Inverso Por Redes Neurais

“…Assim, diversas pesquisas buscaram desenvolver e aprimorar métodos nãoinvasivos para localizar corpos estranhos inseridos no organismo humano, baseados na detecção do campo magnético gerado por materiais ferromagnéticos [1,12] e não-ferromagnéticos [13,14,15,16].…”