Imaging and localizing interventional devices by susceptibility mapping using MRI. Academic Article

abstract

• MRI has been used for imaging interventional procedures with devices such as brachytherapy seeds, biopsy needles, markers, and stents. However, the high susceptibility of these devices leads to signal loss and distortion in the MRI images. Previously, we proposed a method to generate positive contrast of the brachytherapy seeds using a regularized L1 minimization algorithm. In this paper, we further developed and tested the method to image larger interventional devices based on susceptibility mapping. Computer simulations and experiments were performed using phantoms made of platinum wires and titanium needles. The results show that the proposed method provide positive contrast images of devices, therefore improves the visualization and localization of the devices.

authors

• Ji, Jim

published proceedings

• Annu Int Conf IEEE Eng Med Biol Soc

author list (cited authors)

• Dong, Y., Chang, Z., & Ji, J.

citation count

• 3

complete list of authors

• Dong, Ying||Chang, Zheng||Ji, Jim

publication date

• August 2014

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference  Journal

keywords

• Algorithms
• Biomarkers
• Computer Simulation
• Gelatin
• Humans
• Imaging, Three-Dimensional
• Magnetic Resonance Imaging
• Phantoms, Imaging
• Spin Labels

Digital Object Identifier (DOI)

• 10.1109/EMBC.2014.6943896

start page

• 1541

end page

• 1544

volume

• 2014

URL

• http://dx.doi.org/10.1109/embc.2014.6943896