Interactive alignment and subtraction of two tomographic 3D imaging studies

1993 ◽  
Author(s):  
Michael J. Flynn ◽  
Jeanne Li ◽  
Dianna D. Cody
Keyword(s):  
2011 ◽  
Author(s):  
David W. Vahey ◽  
Emilio J. Tozzi ◽  
C. Tim Scott ◽  
Daniel J. Klingenberg
Keyword(s):  

2021 ◽  
Vol 9 (1) ◽  
pp. e050
Author(s):  
Paul Marcelo Ñahuincopa López ◽  
Luis Miguel Romero Rodríguez

Objective: The aim of this study was to update the concepts of the diagnosis of idiopathic osteosclerosis (IO) of the jaws by digital panoramic radiographs and cone beam tomography and describe the impact of this disease on oral and general health. Methods: A search of the main databases of dental medical research was carried out using the search terms “osteosclerosis, panoramic radiography, cone beam computed tomography, jaws”. Articles without language restriction until September 30, 2020 were identified. The prevalence and clinical and radiographic characteristics of IO of the jaws were examined in 2D and 3D imaging studies, as well as the interaction during treatments in the various dental specialties. Results: We analyzed the current situation regarding the diagnosis of IO, with an update of the diagnostic criteria used to accurately identify IO in the latest generation imaging studies, as well determine its possible interactions in oral an general health. Conclusions: It is important to have a clear differential diagnosis of IO and be able to distinguish different radiopacities in the maxilla. Accurate reporting and monitoring of the morphometric characteristics are necessary taking into account the impact the presence of IO of the jaws has on future dental treatments.


Author(s):  
Neil Rowlands ◽  
Jeff Price ◽  
Michael Kersker ◽  
Seichi Suzuki ◽  
Steve Young ◽  
...  

Three-dimensional (3D) microstructure visualization on the electron microscope requires that the sample be tilted to different positions to collect a series of projections. This tilting should be performed rapidly for on-line stereo viewing and precisely for off-line tomographic reconstruction. Usually a projection series is collected using mechanical stage tilt alone. The stereo pairs must be viewed off-line and the 60 to 120 tomographic projections must be aligned with fiduciary markers or digital correlation methods. The delay in viewing stereo pairs and the alignment problems in tomographic reconstruction could be eliminated or improved by tilting the beam if such tilt could be accomplished without image translation.A microscope capable of beam tilt with simultaneous image shift to eliminate tilt-induced translation has been investigated for 3D imaging of thick (1 μm) biologic specimens. By tilting the beam above and through the specimen and bringing it back below the specimen, a brightfield image with a projection angle corresponding to the beam tilt angle can be recorded (Fig. 1a).


Author(s):  
EA Rodegerdts ◽  
A Boss ◽  
K Riemarzik ◽  
M Lichy ◽  
F Schick ◽  
...  
Keyword(s):  
3 Tesla ◽  

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