Abstract #0816
In vivo Comparison of Ultrashort Echo Time (UTE) and Zero Echo Time (ZTE) MRI at 7T
Peder Eric Zufall Larson 1 , Misung Han 1 , Sarah J. Nelson 1 , Daniel B. Vigneron 1 , Roland Krug 1 , and Douglas A. C. Kelley 2
1
Radiology and Biomedical Imaging, University
of California - San Francisco, San Francisco, CA, United
States,
2
Neuro
Apps and Workflow, GE Healthcare, Corte Madera, CA,
United States
Detection of short-T2 (< 1ms) semi-solid tissue
components, such as in tendons, calcified cartilage, the
meninges, and myelin, is limited with Cartesian MRI
acquisitions due minimum TEs. Two promising approaches
for imaging these components are ultrashort echo time
(UTE) and zero echo time (ZTE) pulse sequences. ZTE and
UTE MRI acquired at 7T in the brain, ankle, and knee
demonstrated similar tissue contrast with matched
acquisition parameters. UTE offers advantages of slab or
slice selection and supports variable TEs. ZTE provides
a shorter TE, is practically insensitive to gradient
infidelity, and is relatively quiet due to slow gradient
switching.
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