Assessment of porosity index of the femoral neck and tibia by 3D ultra-short echo-time MRI

2017 ◽  
Vol 47 (3) ◽  
pp. 820-828 ◽  
Author(s):  
Min Chen ◽  
Huishu Yuan
Keyword(s):  
Femoral Neck ◽  
Echo Time ◽  
Short Echo Time ◽  
Porosity Index

scholarly journals Ultra-short echo-time MRI detects changes in bone mineralization and water content in OVX rat bone in response to alendronate treatment

Bone ◽  
2010 ◽  
Vol 46 (5) ◽  
pp. 1391-1399 ◽  
Author(s):  
S. Anumula ◽  
S.L. Wehrli ◽  
J. Magland ◽  
A.C. Wright ◽  
F.W. Wehrli
Keyword(s):  
Water Content ◽  
Bone Mineralization ◽  
Alendronate Treatment ◽  
Echo Time ◽  
Short Echo Time ◽  
Rat Bone

Subclavian MR Arteriography: Reduction of Susceptibility Artifact with Short Echo Time and Dilute Gadopentetate Dimeglumine

Radiology ◽  
2000 ◽  
Vol 217 (2) ◽  
pp. 581-586 ◽  
Author(s):  
Mohammed A. Neimatallah ◽  
Thomas L. Chenevert ◽  
Ruth C. Carlos ◽  
Frank J. Londy ◽  
Qian Dong ◽  
...  
Keyword(s):  
Gadopentetate Dimeglumine ◽  
Susceptibility Artifact ◽  
Echo Time ◽  
Short Echo Time

Saddle coil design for short echo time 23 NA MRI

1986 ◽  
Vol 4 (2) ◽  
pp. 171
Author(s):  
Peter M. Joseph ◽  
Ronald M. Summers
Keyword(s):  
Coil Design ◽  
Saddle Coil ◽  
Echo Time ◽  
Short Echo Time

Whole body sodium MRI at 3T using an asymmetric birdcage resonator and short echo time sequence: first images of a male volunteer

2012 ◽  
Vol 57 (14) ◽  
pp. 4555-4567 ◽  
Author(s):  
Friedrich Wetterling ◽  
Dominique M Corteville ◽  
Raffi Kalayciyan ◽  
Andreas Rennings ◽  
Simon Konstandin ◽  
...  
Keyword(s):  
Male Volunteer ◽  
Time Sequence ◽  
Whole Body ◽  
Sodium Mri ◽  
Body Sodium ◽  
Echo Time ◽  
Short Echo Time ◽  
Birdcage Resonator

In vitro imaging of kidney stones using ultra-short echo-time magnetic resonance

2015 ◽  
Author(s):  
El-Sayed Ibrahim ◽  
Robert Pooley ◽  
Joseph Cernigliaro ◽  
Mellena Bridges ◽  
Jamie Giesbrandt ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Kidney Stones ◽  
Echo Time ◽  
Short Echo Time

Short Echo Time Proton MR Spectroscopic Imaging

1993 ◽  
Vol 17 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Stefan Posse ◽  
Bernhard Schuknecht ◽  
Mary E. Smith ◽  
Peter C. M. van Zijl ◽  
Norbert Herschkowitz ◽  
...  
Keyword(s):  
Spectroscopic Imaging ◽  
Echo Time ◽  
Short Echo Time ◽  
Mr Spectroscopic Imaging

Metabolite concentrations in supraventricular white matter from teenage to early old age: A short echo time 1h magnetic resonance spectroscopy (MRS) study

2010 ◽  
Vol 51 (3) ◽  
pp. 309-315 ◽  
Author(s):  
Raili Raininko ◽  
Peter Mattsson
Keyword(s):  
White Matter ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Age Dependence ◽  
Total N ◽  
Metabolite Concentrations ◽  
Repetition Time ◽  
Echo Time ◽  
Short Echo Time

Background: Age- and sex-related changes of metabolites in healthy adult brains have been examined with different 1H magnetic resonance spectroscopy (MRS) methods in varying populations, and with differing results. A long repetition time and short echo time technique reduces quantification errors due to T1 and T2 relaxation effects and makes it possible to measure metabolites with short T2 relaxation times. Purpose: To examine the effect of age on the metabolite concentrations measured by 1H MRS in normal supraventricular white matter using a long repetition time (TR) and a short echo time (TE). Material and Methods: Supraventricular white matter of 57 healthy subjects (25 women, 32 men), aged 13 to 72 years, was examined with a single-voxel MRS at 1.5T using a TR of 6000 ms and a TE of 22 ms. Tissue water was used as a reference in quantification. Results: Myoinositol increased slightly and total N-acetyl aspartate (NAA) decreased slightly with increasing age. Glutamine/glutamate complex (Glx) showed U-shaped age dependence, with highest concentrations in the youngest and oldest subjects. No significant age dependence was found in total choline and total creatine. No gender differences were found. Macromolecule/ lipid (ML) fractions were reliably measurable only in 36/57 or even fewer subjects and showed very large deviations. Conclusion: The concentrations of several metabolites in cerebral supraventricular white matter are age dependent on 1H MRS, even in young and middle-aged people, and age dependency can be nonlinear. Each 1H MRS study of the brain should therefore take age into account, whereas sex does not appear to be so important. The use of macromolecule and lipid evaluations is compromised by less successful quantification and large variations in healthy people.

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