scholarly journals The third dimension in palaeopathology: How can three‐dimensional imaging by computed tomography bring an added value to retrospective diagnosis?

2020 ◽  
Vol 30 (4) ◽  
pp. 538-550
Author(s):  
Hélène Coqueugniot ◽  
Bruno Dutailly ◽  
Olivier Dutour
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Added Value ◽  
Three Dimensional Imaging ◽  
Retrospective Diagnosis ◽  
The Third ◽  
Third Dimension

Theory of Electron Diffraction by Crystals

1967 ◽  
Vol 22 (4) ◽  
pp. 422-431 ◽  
Author(s):  
Kyozaburo Kambe
Keyword(s):  
Integral Equation ◽  
Electron Diffraction ◽  
General Theory ◽  
Green’S Function ◽  
Green's Function ◽  
Scattering Problem ◽  
Three Dimensional ◽  
Two Dimensions ◽  
The Third ◽  
Third Dimension

A general theory of electron diffraction by crystals is developed. The crystals are assumed to be infinitely extended in two dimensions and finite in the third dimension. For the scattering problem by this structure two-dimensionally expanded forms of GREEN’S function and integral equation are at first derived, and combined in single three-dimensional forms. EWALD’S method is applied to sum up the series for GREEN’S function.

Three-dimensional imaging of teeth and jaw bones using fluoroscopic computed tomography (FCT)

1988 ◽  
Vol 4 (1) ◽  
pp. 75-79 ◽  
Author(s):  
Fukai Toyofuku ◽  
Takemasa Tanaka ◽  
Sigenobu Kanda
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Jaw Bones

Three Dimensional Imaging of Bone From Analysis of Computed Tomography Data

Orthopedics ◽  
1985 ◽  
Vol 8 (10) ◽  
pp. 1269-1273 ◽  
Author(s):  
Steven T Woolson ◽  
Linda L Fellingham ◽  
Parvati Dev ◽  
Arthur Vassiliadis
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Tomography Data

Cone-beam computed tomography versus orthopantomography in sinus lift procedures: Two-dimensional versus three-dimensional imaging

2018 ◽  
Vol 6 (4) ◽  
pp. 113
Author(s):  
SManoj Kumar ◽  
Hazza Al Hobeira ◽  
MohammadD Aljanakh ◽  
Sameer Shaikh ◽  
Kurian Ponnuse ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Cone Beam ◽  
Two Dimensional ◽  
Sinus Lift ◽  
Three Dimensional Imaging

scholarly journals New insights into the suitability of the third dimension for visualizing multivariate/multidimensional data: A study based on loss of quality quantification

2014 ◽  
Vol 15 (1) ◽  
pp. 3-30 ◽  
Author(s):  
Antonio Gracia ◽  
Santiago González ◽  
Víctor Robles ◽  
Ernestina Menasalvas ◽  
Tatiana von Landesberger
Keyword(s):  
Analytical Approach ◽  
Distance Perception ◽  
Statistical Tests ◽  
Three Dimensional ◽  
Multidimensional Data ◽  
Two Dimensional ◽  
Dimensional Representation ◽  
The Third ◽  
Quality Degradation ◽  
Third Dimension

Most visualization techniques have traditionally used two-dimensional, instead of three-dimensional representations to visualize multidimensional and multivariate data. In this article, a way to demonstrate the underlying superiority of three-dimensional, with respect to two-dimensional, representation is proposed. Specifically, it is based on the inevitable quality degradation produced when reducing the data dimensionality. The problem is tackled from two different approaches: a visual and an analytical approach. First, a set of statistical tests (point classification, distance perception, and outlier identification) using the two-dimensional and three-dimensional visualization are carried out on a group of 40 users. The results indicate that there is an improvement in the accuracy introduced by the inclusion of a third dimension; however, these results do not allow to obtain definitive conclusions on the superiority of three-dimensional representation. Therefore, in order to draw further conclusions, a deeper study based on an analytical approach is proposed. The aim is to quantify the real loss of quality produced when the data are visualized in two-dimensional and three-dimensional spaces, in relation to the original data dimensionality, to analyze the difference between them. To achieve this, a recently proposed methodology is used. The results obtained by the analytical approach reported that the loss of quality reaches significantly high values only when switching from three-dimensional to two-dimensional representation. The considerable quality degradation suffered in the two-dimensional visualization strongly suggests the suitability of the third dimension to visualize data.

Cone beam computed tomography: Rejuvenating dentistry

2016 ◽  
Vol 7 (2) ◽  
pp. 74-77 ◽  
Author(s):  
Zaid Baqain ◽  
Abeer Al Hadidi
Keyword(s):  
Computed Tomography ◽  
Radiation Exposure ◽  
Radiation Protection ◽  
Cone Beam Computed Tomography ◽  
Developing World ◽  
Image Interpretation ◽  
Three Dimensional ◽  
Cone Beam ◽  
Three Dimensional Imaging ◽  
Developed World

Dental cone beam computed tomography (CBCT) is the three-dimensional imaging of choice in modern dentistry. In the developed world, guidelines have been published on the use of CBCT in dentistry, largely in response to the risks associated with ionising radiation exposure. However, the availability of different models on the market at affordable prices has made this machine an integral part of the contemporary dentists’ apparatus, even in the developing world. Here, we underline the importance of awareness on radiation protection, image acquisition, familiarity with the software and image interpretation.

People Planning by a Fixed Resource Method

1972 ◽  
Vol 34 (3) ◽  
pp. 799-806 ◽  
Author(s):  
John C. Baird ◽  
Virgil Graf ◽  
Richard Degerman
Keyword(s):  
Cluster Analysis ◽  
Outer Space ◽  
Three Dimensional ◽  
Two Dimensions ◽  
The Third ◽  
Complex Stimuli ◽  
The Mean ◽  
Highly Correlated ◽  
Third Dimension ◽  
The Ideal

Results are presented from a new method to determine a person's conception of complex stimuli. In three related experiments Ss expressed their views of ideal organisms by distributing a fixed resource among hypothetical properties of the ideal. The results from the experiments were highly correlated, lending weight to the reliability and generality of the approach. Cluster analysis and multidimensional scaling were used to group the properties in two dimensions, while the mean amount allocated to a property was represented in the third dimension. A three-dimensional plot was constructed for each of four ideals: the only organism on earth, a member of the only species on earth, an organism going into outer space, and an organism coming to earth from outer space.

Sign in / Sign up

Export Citation Format

Share Document