High-resolution dental magnetic resonance imaging for planning palatal graft surgery-a clinical pilot study

2018 ◽  
Vol 45 (4) ◽  
pp. 462-470 ◽  
Author(s):  
Tim Hilgenfeld ◽  
Thorsten Kästel ◽  
Alexander Heil ◽  
Peter Rammelsberg ◽  
Sabine Heiland ◽  
...  
2021 ◽  
Vol 15 ◽  
Author(s):  
Laura B. Eisenmenger ◽  
Jacqueline C. Junn ◽  
Daniel Cooke ◽  
Steven Hetts ◽  
Chengcheng Zhu ◽  
...  

Purpose: High-resolution vessel wall magnetic resonance imaging (VW-MRI) could provide a way to identify high risk arteriovenous malformation (AVM) features. We present the first pilot study of clinically unruptured AVMs evaluated by high-resolution VW-MRI.Methods: A retrospective review of clinically unruptured AVMs with VW-MRI between January 1, 2016 and December 31, 2018 was performed documenting the presence or absence of vessel wall “hyperintensity,” or enhancement, within the nidus as well as perivascular enhancement and evidence of old hemorrhage (EOOH). The extent of nidal vessel wall “hyperintensity” was approximated into five groups: 0, 1–25, 26–50, 51–75, and 76–100%.Results: Of the nine cases, eight demonstrated at least some degree of vessel wall nidus “hyperintensity.” Of those eight cases, four demonstrated greater than 50% of the nidus with hyperintensity at the vessel wall, and three cases had perivascular enhancement adjacent to nidal vessels. Although none of the subjects had prior clinical hemorrhage/AVM rupture, of the six patients with available susceptibility weighted imaging to assess for remote hemorrhage, only two had subtle siderosis to suggest prior sub-clinical bleeds.Conclusion: Vessel wall “enhancement” occurs in AVMs with no prior clinical rupture. Additional studies are needed to further investigate the implication of these findings.


Bone Reports ◽  
2018 ◽  
Vol 8 ◽  
pp. 180-186 ◽  
Author(s):  
Sarah L. West ◽  
Chamith S. Rajapakse ◽  
Tammy Rayner ◽  
Rhiannon Miller ◽  
Michelle A. Slinger ◽  
...  

Author(s):  
Alan P. Koretsky ◽  
Afonso Costa e Silva ◽  
Yi-Jen Lin

Magnetic resonance imaging (MRI) has become established as an important imaging modality for the clinical management of disease. This is primarily due to the great tissue contrast inherent in magnetic resonance images of normal and diseased organs. Due to the wide availability of high field magnets and the ability to generate large and rapidly switched magnetic field gradients there is growing interest in applying high resolution MRI to obtain microscopic information. This symposium on MRI microscopy highlights new developments that are leading to increased resolution. The application of high resolution MRI to significant problems in developmental biology and cancer biology will illustrate the potential of these techniques.In combination with a growing interest in obtaining high resolution MRI there is also a growing interest in obtaining functional information from MRI. The great success of MRI in clinical applications is due to the inherent contrast obtained from different tissues leading to anatomical information.


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