Journal
MAGNETIC RESONANCE IN MEDICINE
Volume 63, Issue 2, Pages 290-296Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/mrm.22250
Keywords
ultrasound; MRI; cardiac MRI; navigator echo
Funding
- NIH (NCRR) [R43RR17474]
- BMBF Forderungskennzeichen [01 EZ 0413]
Ask authors/readers for more resources
A hybridized dual-imaging system combining real-time ultrasound imaging and MRI was utilized for cardiac imaging at 1.5 T and 3 T. The ultrasound scanner with a programmable software interface was connected via computer to the MRI scanner. Electronic noise was eliminated with electromagnetic shielding and grounding to the screen room. At 3 T, real-time prospective motion compensation in dynamic cine cardiac imaging was implemented using B-mode ultrasound imaging. The ultrasound technique avoided drawbacks such as signal saturation or steady-state interruption of the MR navigator gating. At 1.5 T, a low-latency real-time feedback to balanced steady state free precision MR imaging was performed in three normal volunteers. Results showed active tracking of the heart during respiratory motion and improvement in time-averaged cardiovascular images. Future studies can fully exploit the potential of the high-frequency position information provided by the ultrasound system for more advanced applications in real-time organ tracking. Magn Reson Med 63:290-296, 2010. (C) 2009 Wiley-Liss, Inc.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available