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Optical Coherence Tomography of Ocular Diseases
Section I: Principles of Operation and Interpretation Chapter 1: Principles of Optical Coherence Tomography James G. Fujimoto, PhD; Michael R. Hee, MD, PhD; David Huang, MD, PhD; Joel S. Schuman, MD; Carmen A.
J. Schuman +3 more
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SIAM Journal on Applied Mathematics, 1996
The authors propose a pseudolocal tomography concept. Let \(d > 0\) be fixed, they consider the following pseudolocal tomography formula \[ f_d (x) = {1 \over 4 \pi^2} \int_{S^1} \int^{x. \theta + d}_{x. \theta - d} {\widehat f_d(\theta, p) \over x.
Alexander G. Ramm, Alexander Katsevich
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The authors propose a pseudolocal tomography concept. Let \(d > 0\) be fixed, they consider the following pseudolocal tomography formula \[ f_d (x) = {1 \over 4 \pi^2} \int_{S^1} \int^{x. \theta + d}_{x. \theta - d} {\widehat f_d(\theta, p) \over x.
Alexander G. Ramm, Alexander Katsevich
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Neural-network quantum state tomography
Nature Physics, 2017The experimental realization of increasingly complex synthetic quantum systems calls for the development of general theoretical methods to validate and fully exploit quantum resources.
G. Torlai +5 more
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Clinical Radiology, 1965
Summary The separating factor or thickness of cut for a tomographic section is often described as being from 1 to 2 mm. Evidence is presented that in the case of the larynx this does not present a true picture. It is shown that the effective thickness of a tomographic section for this organ is often over 1 cm. In tomography of the larynx, thinness of
G.M. Ardran, E. Emrys-Roberts
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Summary The separating factor or thickness of cut for a tomographic section is often described as being from 1 to 2 mm. Evidence is presented that in the case of the larynx this does not present a true picture. It is shown that the effective thickness of a tomographic section for this organ is often over 1 cm. In tomography of the larynx, thinness of
G.M. Ardran, E. Emrys-Roberts
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SIAM Journal on Applied Mathematics, 1992
Tomography produces the reconstruction of a function \(f\) from a large number of line integrals of \(f\). Conventional tomography is a global procedure in that the standard convolution formulas for reconstruction at a single point require the intervals over all lines within some plane containing the point.
Erik L. Ritman +2 more
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Tomography produces the reconstruction of a function \(f\) from a large number of line integrals of \(f\). Conventional tomography is a global procedure in that the standard convolution formulas for reconstruction at a single point require the intervals over all lines within some plane containing the point.
Erik L. Ritman +2 more
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BIOIMPEDANCE TOMOGRAPHY (ELECTRICAL IMPEDANCE TOMOGRAPHY)
Annual Review of Biomedical Engineering, 2006Electrical impedance tomography (EIT) is a relatively new imaging method that has evolved over the past 20 years. It has the potential to be of great value in clinical diagnosis; however, EIT is a technically difficult problem to solve in terms of developing hardware for data capture and the algorithms to reconstruct the images.
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Inverse Problems, 1995
The authors explain how the local tomography approach to tomographic problems can be extended to a wide range of situations including limited data problems, attenuated transforms and generalized Radon transforms. Numerical examples illustrate the use of local tomography applied to complete and limited data problems.
L Mogilevskaya +2 more
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The authors explain how the local tomography approach to tomographic problems can be extended to a wide range of situations including limited data problems, attenuated transforms and generalized Radon transforms. Numerical examples illustrate the use of local tomography applied to complete and limited data problems.
L Mogilevskaya +2 more
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Positron Emission Tomography/Computed Tomography
Seminars in Nuclear Medicine, 2008Accurate anatomical localization of functional abnormalities obtained with the use of positron emission tomography (PET) is known to be problematic. Although tracers such as (18)F-fluorodeoxyglucose ((18)F-FDG) visualize certain normal anatomical structures, the spatial resolution is generally inadequate for accurate anatomic localization of pathology.
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1968
Publisher Summary This chapter reviews linear tomographic movement. It is noticed that in this tomographic movement the focal spot moves along a line parallel to the film movement. During this movement, the X-ray tube is itself rotated about the focus as axis in order to keep the beam directed at the film and so achieve uniform exposure rate during ...
W.J. MEREDITH, J.B. MASSEY
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Publisher Summary This chapter reviews linear tomographic movement. It is noticed that in this tomographic movement the focal spot moves along a line parallel to the film movement. During this movement, the X-ray tube is itself rotated about the focus as axis in order to keep the beam directed at the film and so achieve uniform exposure rate during ...
W.J. MEREDITH, J.B. MASSEY
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Resonance, 2007
Tomography is traditionally associated with medical ‘CT’ scanners that have been in use for over 30 years now. This mathematical concept is now applied widely by scientists and engineers in a variety of measurements involving solids, fluid, gases and plasmas.
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Tomography is traditionally associated with medical ‘CT’ scanners that have been in use for over 30 years now. This mathematical concept is now applied widely by scientists and engineers in a variety of measurements involving solids, fluid, gases and plasmas.
openaire +2 more sources