Reproducibility of 7‐T brain spectroscopy using an ultrashort echo time STimulated Echo Acquisition Mode sequence and automated voxel repositioning

2021 ◽  
Author(s):  
Meredith A. Reid ◽  
Martha R. Forloines ◽  
Nouha Salibi
Keyword(s):  
Ultrashort Echo Time ◽  
Stimulated Echo ◽  
Acquisition Mode ◽  
Echo Time ◽  
Brain Spectroscopy

scholarly journals Clinical application of ultrashort echo-time MRI for lung pathologies in children

2021 ◽  
Author(s):  
J. Geiger ◽  
K.G. Zeimpekis ◽  
A. Jung ◽  
A. Moeller ◽  
C.J. Kellenberger
Keyword(s):  
Clinical Application ◽  
Ultrashort Echo Time ◽  
Echo Time

PP-0120 Applicator visualization using ultrashort echo time MRI for HDR endorectal brachytherapy

2021 ◽  
Vol 158 ◽  
pp. S89-S90
Author(s):  
E. Kerkhof ◽  
R. van den Ende ◽  
E. Ercan ◽  
R. Keesman ◽  
C. Marijnen ◽  
...  
Keyword(s):  
Ultrashort Echo Time ◽  
Echo Time

scholarly journals A Useful Combination of Quantitative Ultrashort Echo Time MR Imaging and a Probing Device for Biomechanical Evaluation of Articular Cartilage

Biosensors ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 52
Author(s):  
Takehito Hananouchi ◽  
Yanjun Chen ◽  
Saeed Jerban ◽  
Masaru Teramoto ◽  
Yajun Ma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mr Imaging ◽  
Linear Regression Analysis ◽  
Reaction Force ◽  
Predictor Variable ◽  
Cartilage Tissue ◽  
Magnetization Transfer Ratio ◽  
Ultrashort Echo Time ◽  
Echo Time

In this study, we combined quantitative ultrashort echo time (UTE) magnetic resonance (MR) imaging and an investigation by a probing device with tri-axial force sensor to seek correlations with mechanical properties of human patellar cartilage for in situ evaluation of biomechanical properties. Cartilage blocks (15 × 20 × 5 mm3) were dissected from the patella of six donors; 5 mm square regions of interest from the cartilage blocks were imaged using UTE-MR imaging sequences (T2* and magnetization transfer ratio (MTR)), and mechanical properties were measured using a micro indentation device. Then, the vertical reaction force on the cartilage surface was measured while push-probing forward 3 mm with the probing device at a 30° tilt to the horizontal plane. The results showed a positive correlation between stiffness/elastic modulus and each predictor variable (UTE-T2* (r = 0.240 and 0.255, respectively, UTE-MTR (r = 0.378 and 0.379, respectively), and probing device force (r = 0.426 and 0.423, respectively). Furthermore, multiple linear regression analysis showed the combination of the three predictors had stronger correlation (adjusted r2 = 0.314 (stiffness), 0.323 (elastic), respectively). Our results demonstrate the potential for these non- and less- invasive methods for in situ evaluation of the mechanical properties of cartilage tissue.

scholarly journals Anatomic Evaluation of 3-Dimensional Ultrashort-Echo-Time Bone Maps for PET/MR Attenuation Correction

2014 ◽  
Vol 55 (5) ◽  
pp. 780-785 ◽  
Author(s):  
G. Delso ◽  
M. Carl ◽  
F. Wiesinger ◽  
L. Sacolick ◽  
M. Porto ◽  
...  
Keyword(s):  
Attenuation Correction ◽  
Ultrashort Echo Time ◽  
3 Dimensional ◽  
Echo Time
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