Localization of brachytherapy seeds in MRI by deconvolution. Academic Article

abstract

• MRI has the potential to be used as a preferred imaging method for brachytherapy during the seed insertion and post-surgery evaluation. However, the brachytherapy seeds usually appear dark in the MRI magnitude images. Previously, we have developed a method based on susceptibility mapping to generate positive contrast of the seeds, which allows improved seed localization. In this paper, we propose a new method to localize the seeds by deconvolution using a seed kernel (i.e. the calculated magnetic field surrounding a seed). The deconvolution is solved using a regularized L1 minimization. Results from simulated and experimental data sets show that the seeds can be identified and localized using the proposed method more precisely.

authors

• Ji, Jim

published proceedings

• Annu Int Conf IEEE Eng Med Biol Soc

author list (cited authors)

• Dong, Y., Chang, Z., Whitehead, G., & Ji, J.

citation count

• 4

complete list of authors

• Dong, Ying||Chang, Zheng||Whitehead, Gregory||Ji, Jim

publication date

• July 2013

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

• Brachytherapy
• Computer Simulation
• Contrast Media
• Humans
• Image Processing, Computer-Assisted
• Magnetic Phenomena
• Magnetic Resonance Imaging

Digital Object Identifier (DOI)

• 10.1109/EMBC.2013.6610161

start page

• 2960

end page

• 2963

volume

• 2013

URL

• http://dx.doi.org/10.1109/embc.2013.6610161