Visualization and tracking of an inflatable balloon catheter using SSFP in a flow phantom and in the heart and great vessels of patients.
MAGN RESON MED
988 - 995.
Passive catheter tracking involves direct interaction between the device and its surroundings, creating a local signal loss or enhancement of the image. Using only standard balloon catheters filled with CO2 and imaged with a steady-state free precession sequence, it was possible to visualize and passively track catheters in a flow phantom and in the heart and great vessels of 20 patients without any additional image processing. The phantom work demonstrated that it was advantageous to sacrifice spatial resolution in order to increase temporal resolution. Frame rates greater than 10/sec were necessary for ease of catheter manipulation. Although only the tip of the catheter was visualized, this technique proved to be effective in patients undergoing cardiac catheterization. Magn Reson Med 51: 988-995, 2004. (C) 2004 Wiley-Liss, Inc.
|Title:||Visualization and tracking of an inflatable balloon catheter using SSFP in a flow phantom and in the heart and great vessels of patients|
|Keywords:||interventional MRI, passive tracking, catheterization, cardiovascular MRI, ENDOVASCULAR INTERVENTIONS, FIDUCIAL MARKERS, MRI, GUIDEWIRES, GUIDANCE, DEVICES, BURNS|
|UCL classification:||UCL > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science
UCL > School of BEAMS > Faculty of Engineering Science > Medical Physics and Bioengineering
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