scholarly journals Magnetic resonance imaging assessment of renal flow distribution patterns during ex vivo normothermic machine perfusion in porcine and human kidneys

2021 ◽  
Vol 34 (9) ◽  
pp. 1643-1655 ◽  
Author(s):  
Rianne Schutter ◽  
Veerle A. Lantinga ◽  
Tim L. Hamelink ◽  
Merel B. F. Pool ◽  
Otis C. Varsseveld ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Ex Vivo ◽  
Flow Distribution ◽  
Distribution Patterns ◽  
Machine Perfusion ◽  
Resonance Imaging ◽  
Normothermic Machine Perfusion ◽  
Magnetic Resonance Imaging Assessment ◽  
Renal Flow

Behavioral, Histological, and Ex Vivo Magnetic Resonance Imaging Assessment of Graded Contusion Spinal Cord Injury in Mice

2007 ◽  
Vol 24 (4) ◽  
pp. 674-689 ◽  
Author(s):  
Rebecca A. Nishi ◽  
Hongli Liu ◽  
Yong Chu ◽  
Mark Hamamura ◽  
Min-Ying Su ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Magnetic Resonance ◽  
Ex Vivo ◽  
Resonance Imaging ◽  
Cord Injury ◽  
Magnetic Resonance Imaging Assessment

scholarly journals Magnetic Resonance Imaging Assessment of Blood Flow Distribution in Fenestrated and Completed Fontan Circulation with Special Emphasis on Abdominal Blood Flow

2019 ◽  
Vol 20 (7) ◽  
pp. 1186 ◽  
Author(s):  
Pablo Caro-Dominguez ◽  
Rajiv Chaturvedi ◽  
Govind Chavhan ◽  
Simon C. Ling ◽  
Deane Yim ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Flow Distribution ◽  
Fontan Circulation ◽  
Blood Flow Distribution ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Assessment

scholarly journals Free-breathing Magnetic Resonance Imaging Assessment of Body Composition in Healthy and Overweight Children

2019 ◽  
Vol 68 (6) ◽  
pp. 782-787
Author(s):  
Karrie V. Ly ◽  
Tess Armstrong ◽  
Joanna Yeh ◽  
Shahnaz Ghahremani ◽  
Grace H. Kim ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Body Composition ◽  
Magnetic Resonance ◽  
Free Breathing ◽  
Overweight Children ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Assessment

scholarly journals Distribution Patterns of Intra‐ and Extramyocellular Fat by Magnetic Resonance Imaging in Subjects with Diabetes, Prediabetes and Normoglycemic Controls

2021 ◽  
Author(s):  
Lena S. Kiefer ◽  
Jana Fabian ◽  
Susanne Rospleszcz ◽  
Roberto Lorbeer ◽  
Jürgen Machann ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Distribution Patterns ◽  
Resonance Imaging

scholarly journals Numerical Analysis of a Flexible Dual Loop Coil and its Experimental Validation for pre-Clinical Magnetic Resonance Imaging of Rodents at 7 T

2016 ◽  
Vol 16 (6) ◽  
pp. 294-299 ◽  
Author(s):  
S. Solis-Najera ◽  
F. Vazquez ◽  
R. Hernandez ◽  
O. Marrufo ◽  
A.O. Rodriguez
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging System ◽  
Ex Vivo ◽  
Small Animal ◽  
Magnetic Resonance Imaging System ◽  
External Diameter ◽  
Rf Coil ◽  
Resonance Imaging ◽  
Clinical Magnetic Resonance Imaging

Abstract A surface radio frequency coil was developed for small animal image acquisition in a pre-clinical magnetic resonance imaging system at 7 T. A flexible coil composed of two circular loops was developed to closely cover the object to be imaged. Electromagnetic numerical simulations were performed to evaluate its performance before the coil construction. An analytical expression of the mutual inductance for the two circular loops as a function of the separation between them was derived and used to validate the simulations. The RF coil is composed of two circular loops with a 5 cm external diameter and was tuned to 300 MHz and 50 Ohms matched. The angle between the loops was varied and the Q factor was obtained from the S11 simulations for each angle. B1 homogeneity was also evaluated using the electromagnetic simulations. The coil prototype was designed and built considering the numerical simulation results. To show the feasibility of the coil and its performance, saline-solution phantom images were acquired. A correlation of the simulations and imaging experimental results was conducted showing a concordance of 0.88 for the B1 field. The best coil performance was obtained at the 90° aperture angle. A more realistic phantom was also built using a formaldehyde-fixed rat phantom for ex vivo imaging experiments. All images showed a good image quality revealing clearly defined anatomical details of an ex vivo rat.

scholarly journals Ultrasonographic evaluation of meniscal extrusion: comparison with magnetic resonance imaging assessment

2013 ◽  
Vol 21 ◽  
pp. S185 ◽  
Author(s):  
M.D. Crema ◽  
E. Gregio-Junior ◽  
M.M. Lorenzato ◽  
F.W. Roemer ◽  
A. Guermazi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Meniscal Extrusion ◽  
Magnetic Resonance Imaging Assessment

Multidetector-row computed tomography and magnetic resonance imaging of atherosclerotic lesions in human ex vivo coronary arteries

2004 ◽  
Vol 174 (2) ◽  
pp. 243-252 ◽  
Author(s):  
Konstantin Nikolaou ◽  
Christoph R Becker ◽  
Michael Muders ◽  
Gregor Babaryka ◽  
Juergen Scheidler ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Coronary Arteries ◽  
Ex Vivo ◽  
Multidetector Row Computed Tomography ◽  
Resonance Imaging ◽  
Multidetector Row ◽  
Atherosclerotic Lesions

High-Resolution Magnetic Resonance Imaging of the Human Median Nerve

2004 ◽  
Vol 18 (2) ◽  
pp. 80-87 ◽  
Author(s):  
Archie Heddings ◽  
Mehmet Bilgen ◽  
Randolph Nudo ◽  
Bruce Toby ◽  
Terence McIff ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Peripheral Nerve ◽  
Median Nerve ◽  
Ex Vivo ◽  
Imaging Techniques ◽  
Proton Density ◽  
Resonance Imaging ◽  
Imaging Protocols

Objectives. It is widely accepted that peripheral nerve repairs performed within 6 weeks of injury have much better outcomes than those performed at later dates. However, there is no diagnostic technique that can determine if a traumatic peripheral nerve injury requires surgical intervention in the early postinjury phase. The objective of this article was to determine whether novel, noninvasive magnetic resonance imaging techniques could demonstrate the microstructure of human peripheral nerves that is necessary for determining prognosis and determining if surgery is indicated following traumatic injury. Methods. Ex vivo magnetic resonance imaging protocols were developed on a 9.4-T research scanner using spin-echo proton density and gradient-echo imaging sequences and a specially designed, inductively coupled radio frequency coil. These imaging protocols were applied to in situ imaging of the human median nerve in 4 fresh-frozen cadaver arms. Results. Noninvasive high-resolution images of the human median nerve were obtained. Structures in the nerve that were observed included fascicles, interfascicular epineurium, perineurium, and intrafascicular septations. Conclusion. Application of these imaging techniques to clinical scanners could provide physicians with a tool that is capable of grading the severity of nerve injuries and providing indications for surgery in the early postinjury phase.

Ex vivo magnetic resonance imaging of rat spinal cord at 9.4 T

2005 ◽  
Vol 23 (4) ◽  
pp. 601-605 ◽  
Author(s):  
Mehmet Bilgen ◽  
Baraa Al-Hafez ◽  
Thomas M. Malone ◽  
Irina V. Smirnova
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Ex Vivo ◽  
Resonance Imaging ◽  
Rat Spinal Cord
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