Related Experiment Video
Updated: May 30, 2026
Cardiac Magnetic Resonance Imaging at 7 Tesla
Published on: January 6, 2019
Ultrashort echo time MRI of cortical bone at 7 tesla field strength: a feasibility study
Roland Krug1, Peder Eric Zufall Larson, Chunsheng Wang
1Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA. roland.krug@radiology.ucsf.edu
Purpose:
To implement and examine the feasibility of a three-dimensional (3D) ultrashort TE (UTE) sequence on a 7 Tesla (T) clinical MR scanner in comparison with 3T MRI at high isotropic resolution.
Materials And Methods:
Using an in-house built saddle coil at both field strengths we have imaged mid-diaphysial sections of five fresh cadaveric specimens of the distal tibia. An additional in vivo scan was performed at 7 Tesla using a quadrature knee coil.
Results:
Using the same type of saddle coil at both field strengths, a significant increase in SNR at 7T compared with 3T (factor 1.7) was found. Significantly shorter T2* values were found at the higher field strength (T2* = 552.2 ± 126 micros at 7T versus T2* = 1163 ± 391 micros at 3T).
Conclusion:
UHF MRI at 7T has great potential for imaging tissues with short T2.
