Proton computed tomography

2015 ◽  
Vol 30 (17) ◽  
pp. 1540024 ◽  
Author(s):  
Martina Bucciantonio ◽  
Fabio Sauli
Keyword(s):  
Computed Tomography ◽  
Diagnostic Method ◽  
Three Dimensional ◽  
Particle Beams ◽  
Basic Principles ◽  
Charged Particle Beams ◽  
Experimental Systems ◽  
Proton Computed Tomography ◽  
Long Time

Proton computed tomography (pCT) is a diagnostic method capable of in situ imaging the three-dimensional density distribution in a patient before irradiation with charged particle beams. Proposed long time ago, this technology has been developed by several groups, and may become an essential tool for advanced quality assessment in hadrontherapy. We describe the basic principles of the method, its performance and limitations as well as provide a summary of experimental systems and of results achieved.

In Situ Testing Using Synchrotron Radiation Computed Tomography in Materials Research

MRS Advances ◽  
2019 ◽  
Vol 4 (51-52) ◽  
pp. 2831-2841
Author(s):  
Xinchen Ni ◽  
Nathan K. Fritz ◽  
Brian L. Wardle
Keyword(s):  
Computed Tomography ◽  
Synchrotron Radiation ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Time Lapse ◽  
In Situ Testing ◽  
Temporal Dimension ◽  
Analysis Measurement ◽  
Materials Research

ABSTRACTHigh resolution (< 1 µm) computed tomography is an attractive tool in materials research due to its ability to non-destructively visualize the three-dimensional internal microstructures of the material. Recently, this technique has been further empowered by adding a fourth (temporal) dimension to study the time-lapse material response under load. Such studies are referred to as four-dimensional or in situ testing. In this snapshot review, we highlight three representative examples of in situ testing using synchrotron radiation computed tomography (SRCT) for composites failure analysis, measurement of local corrosion rate in alloys, and visualization and quantification of electrochemical reactions in lithium-ion batteries, as well as forward-looking integration of machine learning with in situ CT. Lastly, the future opportunities and challenges of in situ SRCT testing are discussed.

Advances in In Situ SiC Growth Analysis Using Cone Beam Computed Tomography

2019 ◽  
Vol 963 ◽  
pp. 5-9 ◽  
Author(s):  
Michael Salamon ◽  
Matthias Arzig ◽  
Norman Uhlmann ◽  
Peter J. Wellmann
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
In Situ Monitoring ◽  
Material Structure ◽  
Two Dimensional ◽  
Accurate Analysis ◽  
X Ray ◽  
Characteristic Features ◽  
Third Dimension

Computed Tomography is becoming a valuable method for the in-situ monitoring of vapor grown silicon carbide single crystals [1]. Already the two-dimensional X-ray radiography has shown the potential of surveilling the growth process [2] and its characteristic features like the evolution of the facet, the crystal volume or the source material structure from one imaging plane. Even though the demands on imaging capability of the applied X-ray components used for a tomographic analysis are higher than for two-dimensional imaging, the extension of this method to the third dimension is highly beneficial. It allows investigating the full geometry and three-dimensional location of the features and by this provides a more accurate analysis. In this contribution we present the physical characteristics and the latest advances of our technique for the visualization of facets.

Application of Computed Tomography for Supernumerary Teeth Location in Pediatric Dentistry

2008 ◽  
Vol 32 (4) ◽  
pp. 273-276 ◽  
Author(s):  
Suziane Raupp ◽  
Paulo Floriani Kramer ◽  
Helena Willhelm de Oliveira ◽  
Francinne Miranda da Rosa ◽  
Italo Medeiros Faraco Junior
Keyword(s):  
Computed Tomography ◽  
Diagnostic Method ◽  
Three Dimensional ◽  
Pediatric Dentistry ◽  
Procedure Time ◽  
Bone Thickness ◽  
Supernumerary Teeth ◽  
Precise Information ◽  
Surgical Access ◽  
Surrounding Bone

Conventional radiographs provide bi-dimensional images of three-dimensional structures limiting optimal treatment planning. To overcome this deficiency, Computed Tomography (CT) has been used as a diagnostic method in Medicine and Dentistry. CT allows for supernumerary teeth location, the establishment of positional relations with other teeth, and the assessment of surrounding bone thickness; thus, facilitating surgical access and technique choice while reducing the procedure time, of great importance in pediatric dental care. The aim of this study was to present the possibility of applying CT for supernumerary teeth location, through the case report of a five-year-old female patient presenting two supernumerary teeth in the anterior palatal area. In conclusion, CT appears to be an excellent image diagnostic method for locating unerupted supernumerary teeth, providing precise information for planning and performing the surgical approach, while reducing operatory time and post-operatory complications; factors of extreme importance when treating young children.

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