In-vivo motion analysis of bi-ventricular hearts from tagged MR images

2005 ◽  
Author(s):  
Kyoungju Park ◽  
Leon Axel ◽  
Dimitris N. Metaxas
Keyword(s):  
Motion Analysis ◽  
Mr Images ◽  
Tagged Mr Images

Myocardial motion analysis based on an optical flow method using tagged MR images

2018 ◽  
Vol 11 (2) ◽  
pp. 202-211 ◽  
Author(s):  
Daiki Tabata ◽  
Haruo Isoda ◽  
Kaori Kato ◽  
Hiroki Matsubara ◽  
Takafumi Kosugi ◽  
...  
Keyword(s):  
Optical Flow ◽  
Motion Analysis ◽  
Mr Images ◽  
Myocardial Motion ◽  
Flow Method ◽  
Optical Flow Method ◽  
Tagged Mr Images

The Dominant Mechanical Interaction Between the Brain and Skull In Vivo: Is Sliding Arrested at Key Points of Brain-Skull Tethering?

2010 ◽  
Author(s):  
Teresa M. Abney ◽  
Y. Aaron Feng ◽  
Robert Pless ◽  
Ruth J. Okamoto ◽  
Guy M. Genin ◽  
...  
Keyword(s):  
Mechanical Response ◽  
Angular Acceleration ◽  
Principal Component ◽  
Dominant Mode ◽  
Mr Images ◽  
Displacement Fields ◽  
Key Points ◽  
Tagged Mr Images ◽  
The Brain

The relationship between skull acceleration and brain injury is not well understood, in large part because of the challenge of visualizing the brain’s mechanical response in vivo. This difficulty also complicates the validation of computational mechanics predictions. Our dynamic magnetic resonance (MR) imaging suggests an important role for the attachments between brain and skull. Here, we present an MRI-based method for identifying the dominant modes of brain displacement relative to the skull during angular acceleration of the head, and apply it to study brain/skull interactions in live volunteers. The approach was to estimate dynamic intracranial displacement fields from a sequence of tagged MR images of the brain and skull, then identify dominant displacement modes using principal component (PC) analysis. After verifying the method through analysis of a simulated 2-D vibrating plate and MR images of a cylindrical gel phantom, the method was applied to show that the dominant mode of brain/skull interaction is one of sliding arrested by brain/skull meninges in a few specific regions.

Measurement of Lipid Content in Gallbladder Bile Using in- and opposed-phase MR Images and in vivo Proton MR Spectroscopy

2002 ◽  
Vol 46 (2) ◽  
pp. 127
Author(s):  
Sun Jin Hur ◽  
Seok Hwan Shin ◽  
Geum Nan Jee ◽  
Eun Joo Yun ◽  
Soon Gu Cho ◽  
...  
Keyword(s):  
Lipid Content ◽  
Mr Spectroscopy ◽  
Gallbladder Bile ◽  
Mr Images ◽  
Proton Mr Spectroscopy

Influence of in vivo copper on MR images of the liver in rats

1994 ◽  
Vol 4 (4) ◽  
pp. 559-562 ◽  
Author(s):  
Tsunenori Nakakoshi ◽  
Nobuyuki Fujita ◽  
Kan Jong-Hon ◽  
Noritoshi Takeichi ◽  
Kazuo Miyasaka
Keyword(s):  
Mr Images

scholarly journals Calculation of three-dimensional left ventricular strains from biplanar tagged MR images

1992 ◽  
Vol 2 (2) ◽  
pp. 165-175 ◽  
Author(s):  
Christopher C. Moore ◽  
Walter G. O'Dell ◽  
Elliot R. McVeigh ◽  
Elias A. Zerhouni
Keyword(s):  
Three Dimensional ◽  
Left Ventricular ◽  
Mr Images ◽  
Tagged Mr Images

White and gray matter contrast enhancement in MR images of the mouse brain in vivo using IR UTE with a cryo-coil at 9.4T

2014 ◽  
Vol 232 ◽  
pp. 30-35 ◽  
Author(s):  
Weronika Piędzia ◽  
Krzysztof Jasiński ◽  
Katarzyna Kalita ◽  
Boguslaw Tomanek ◽  
Władysław P. Węglarz
Keyword(s):  
Contrast Enhancement ◽  
Mouse Brain ◽  
Gray Matter ◽  
Mr Images

Longitudinal Water Proton Relaxivity and In Vivo T1 MR Images of Mixed Zn(II)/Gd(III) Oxide Nanoparticles

2017 ◽  
Vol 17 (4) ◽  
pp. 2423-2430
Author(s):  
Tirusew Tegafaw ◽  
Bardul Alam Bony ◽  
Wenlong Xu ◽  
Hyunsil Cha ◽  
Yongmin Chang ◽  
...  
Keyword(s):  
Water Proton ◽  
Oxide Nanoparticles ◽  
Mr Images
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