In Vivo MR-Tracking Based on Magnetic Signature Selective Excitation

• Published in: IEEE transactions on medical imaging Vol. 27; no. 1; pp. 28 - 35
• Main Authors: Felfoul, O., Mathieu, J.-B., Beaudoin, G., Martel, S.
• Format: Journal Article
• Language: English
• Published: United States IEEE 01.01.2008; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Artificial Intelligence; Catheterization - methods; Ferromagnetic core tracking; Humans; Image Enhancement - methods; Image Interpretation, Computer-Assisted - methods; Imaging, Three-Dimensional - methods; In vivo; interventional magnetic resonance imaging (MRI); Magnetic cores; magnetic dipole; Magnetic noise; Magnetic resonance; Magnetic resonance imaging; Magnetic Resonance Imaging - instrumentation; Magnetic Resonance Imaging - methods; medical nanorobots; passive tracking; Pattern Recognition, Automated - methods; Phantoms, Imaging; Radio frequency; Radio navigation; radio-frequency (RF) excitation frequencies; Reproducibility of Results; RF signals; Sensitivity and Specificity; Signal generators; Signal to noise ratio; Surgery, Computer-Assisted - methods

A novel magnetic resonance (MR)-tracking method specifically developed to locate the ferromagnetic core of an untethered microdevice, microrobot, or nanorobot for navigation or closed-loop control purpose is described. The tracking method relies on the application of radio-frequency (RF) excitation...