English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Real-time MRI: recent advances using radial FLASH.

MPS-Authors
/persons/resource/persons15943

Uecker,  M.
Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society;

/persons/resource/persons16078

Zhang,  S.
Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society;

/persons/resource/persons15968

Voit,  D.
Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society;

/persons/resource/persons15516

Merboldt,  K. D.
Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society;

/persons/resource/persons15082

Frahm,  J.
Biomedical NMR Research GmbH, MPI for biophysical chemistry, Max Planck Society;

External Ressource
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Uecker, M., Zhang, S., Voit, D., Merboldt, K. D., & Frahm, J. (2012). Real-time MRI: recent advances using radial FLASH. Imaging in Medicine, 4(4), 461-476. doi:10.2217/iim.12.32.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-F0F7-5
Abstract
Recent advances in real-time MRI result in high-quality images with acquisition times of only approximately 30 ms. The technique employs a fast low-angle shot sequence with proton density, T1 or T2/T1 contrast and radial data encoding for motion robustness. High temporal resolution is achieved by an up to 20-fold undersampling of the radial data. An iterative reconstruction algorithm estimates the image as the solution of a nonlinear inverse problem and ensures image fidelity by temporal regularization, which exploits the temporal continuity of successive frames during dynamic imaging. Preliminary real-time examinations at a field strength of 3T range from joint dynamics, speaking and swallowing to the 3D localization of objects in space. In particular, real-time MRI largely facilitates assessments of cardiovascular function and quantitative blood flow. Taken together, advanced real-time MRI methods allow for hitherto inaccessible studies, lead to more robust and shorter examinations, improve patient comfort and offer new diagnostic opportunities.