Imaging and localizing interventional devices by susceptibility mapping using MRI.
Conference Paper
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.
Full Text
Duke Authors
Cited Authors
- Dong, Y; Chang, Z; Ji, J
Published Date
- 2014
Published In
- Annu Int Conf Ieee Eng Med Biol Soc
Volume / Issue
- 2014 /
Start / End Page
- 1541 - 1544
PubMed ID
- 25570264
Pubmed Central ID
- 25570264
Electronic International Standard Serial Number (EISSN)
- 2694-0604
Digital Object Identifier (DOI)
- 10.1109/EMBC.2014.6943896
Conference Location
- United States