Very High Resolution Analysis of the Dynamics of a Coronal Plasmoid

1994 ◽  
Vol 144 ◽  
pp. 593-596
Author(s):  
O. Bouchard ◽  
S. Koutchmy ◽  
L. November ◽  
J.-C. Vial ◽  
J. B. Zirker
Keyword(s):  
High Resolution ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Field Of View ◽  
Small Field ◽  
High Resolution Analysis ◽  
Ccd Observations ◽  
Resolution Analysis ◽  
Very High ◽  
Small Field Of View

AbstractWe present the results of the analysis of a movie taken over a small field of view in the intermediate corona at a spatial resolution of 0.5“, a temporal resolution of 1 s and a spectral passband of 7 nm. These CCD observations were made at the prime focus of the 3.6 m aperture CFHT telescope during the 1991 total solar eclipse.

scholarly journals Visually Guided Microassembly with Active Zooming

2006 ◽  
Vol 18 (6) ◽  
pp. 787-794
Author(s):  
Xiaodong Tao ◽  
◽  
Hyungsuck Cho ◽  
Youngjun Cho ◽  
Keyword(s):  
High Resolution ◽  
Field Of View ◽  
Depth Of Field ◽  
Wide Field ◽  
Small Field ◽  
Depth Of Focus ◽  
Large Depth ◽  
Small Depth ◽  
Wide Field Of View ◽  
Small Field Of View

Vision techniques used in automatic microassembly are limited by inherent problems such as small depth of focus and small field of view. Microassembly must, however, initially detect microparts in a wide field of view and large depth of field while maintaining high resolution. We propose microassembly using active zooming that can overcome these limitations. For a small field of view, active zooming prevents the target from getting out of the field of view during microassembly. For a small depth of focus, our proposal is based on focus measure to maintain clear target image in the field of view during microassembly. Two-step assembly thus ensures zoom microscopy maintaining a wide field of view and large depth of field initially and high resolution at the end. Peg-in-hole assembly experiments confirmed the feasibility of our proposal.

SU-E-I-99: An Ultra-High Resolution Small Field-Of-View Solid State X-Ray Imaging Detector Based on an Electron Multiplying CCD

2012 ◽  
Vol 39 (6Part5) ◽  
pp. 3647-3648
Author(s):  
V Singh ◽  
B Loughran ◽  
A Jain ◽  
P Sharma ◽  
D Bednarek ◽  
...  
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Field Of View ◽  
Small Field ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Detector ◽  
Small Field Of View

scholarly journals Use of the Microangiographic Fluoroscope for Coiling of Intracranial Aneurysms

Neurosurgery ◽  
2011 ◽  
Vol 69 (5) ◽  
pp. 1131-1138 ◽  
Author(s):  
Mandy J. Binning ◽  
David Orion ◽  
Parham Yashar ◽  
Sharon Webb ◽  
Ciprian N. Ionita ◽  
...  
Keyword(s):  
High Resolution ◽  
Intracranial Aneurysms ◽  
Field Of View ◽  
Endovascular Coiling ◽  
Small Field ◽  
Unruptured Aneurysms ◽  
Unruptured Intracranial Aneurysms ◽  
Microangiographic Fluoroscope ◽  
Superior Image Quality ◽  
Small Field Of View

Abstract BACKGROUND Neurointervention is an ever-evolving specialty with tools including microcatheters, microwires, and coils that allow treatment of pathological conditions in increasingly smaller intracranial arteries, requiring increasing accuracy. As endovascular tools evolve, so too should the imaging. OBJECTIVE To detail the use of microangiography performed with a novel fluoroscope during coiling of intracranial aneurysms in 2 separate patients and discuss the benefits and potential limitations of the technology. METHODS The microangiographic fluoroscope (MAF) is an ultra high-resolution x-ray detector with superior resolution over a small field of view. The MAF can be incorporated into a standard angiographic C-arm system for use during endovascular procedures. RESULTS The MAF was useful for improved visualization during endovascular coiling of 2 unruptured intracranial aneurysms, without adding significant time to the procedure. No significant residual aneurysm filling was identified post-coiling, and no complications occurred. CONCLUSION The MAF is a high-resolution detector developed for use in neurointerventional cases in which superior image quality over a small field of view is required. It has been used with success for coiling of 2 unruptured aneurysms at our institution. It shows promise as an important tool in improving the accuracy with which neurointerventionists can perform certain intracranial procedures.

Sign in / Sign up

Export Citation Format

Share Document