tomograph

Definitions

  • WordNet 3.6
    • n tomograph X-ray machine in which a computer builds a detailed image of a particular plane through an object from multiple X-ray measurements
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Usage


In news:

Recent advances in computed tomographic angiography (CTA) and magnetic resonance angiography (MRA) enable comprehensive evaluation of the supra- aortic vascular tree, including cervical and intracranial vessels.
Using the Appropriate Fishing Net for Computed Tomographic Coronary Angiography in Daily Clinical Practice.
Role of positron emission tomographic imaging in gastrointestinal stromal tumors.
Recent advances in computed tomographic angiography (CTA) and magnetic resonance angiography (MRA) enable comprehensive evaluation of the supra-aortic vascular tree, including cervical and intracranial vessels.
Two recent studies calculated the cancer risk that could come from radiation emitted by computed tomographic scans in the United States.
Optometrist Dr Ken Dodge, left, and his wife Heike check the thickness of the layers of her retina and optic nerve on the ocular coherence tomographer.
Recent advances in computed tomographic angiography (CTA) and magnetic resonance angiography (MRA) enable comprehensive evaluation of the supra -aortic vascular tree, including cervical and intracranial vessels.
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In science:

All the samples were imaged prior to testing using a micro-computed tomograph.
Tensile material properties of human rib cortical bone under quasi-static and dynamic failure loading and influence of the bone microstucture on failure characteristics
Several GS placed at the edge of the science FoV are used to perform a tomographic measure of the atmospheric turbulence.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
We develop tests to identify systematic errors in experiments where only a finite amount of data is recorded and apply these tests to tomographic data taken in an ion-trap experiment.
Detection of systematic errors in quantum experiments
Experimental setup—Experimentally, we study tomographic data from an ion-trap quantum processor.
Detection of systematic errors in quantum experiments
These tests were shown to recognize systematic errors in real tomographic data from ion trap experiments.
Detection of systematic errors in quantum experiments
Bootstrapping for Table I.—We first calculate the maximum likelihood state ρml from the measured data and then simulate the tomographic process using that state.
Detection of systematic errors in quantum experiments
By tomographic reconstruction of the final states, this experiment showed that, in this particular setting, weak measurements outperform “do nothing” and pro jective measurements-based strategies in terms of average overlap between the reconstructed and initial quantum states.
Feedback control in quantum optics: an overview of experimental breakthroughs and areas of application
Babichev, Synthesis and tomographic characterization of the displaced Fock state of light, Phys.
Observation of micro-macro entanglement of light
In fact, for nonunit quantum efficiency η < 1 the tomographic method introduces errors for p(n) which are increasingly large versus n, with the additional limitation that quantum efficiency must be greater than the minimum value η = 0.5 [19,20].
Tomographic measurement of nonclassical radiation states
Hence, the knowledge of the phase of the local oscillator in the homodyne detector is not needed for the tomographic reconstruction, and it can be left fluctuating in a real experiment.
Tomographic measurement of nonclassical radiation states
Figs. 1–3 show tomographically-obtained values of B (n), with the respective error bars superimposed, along with the theoretical values for a Schr¨odinger-cat state, for a phase-squeezed state (r > 0), and for an amplitudesqueezed state (r < 0), respectively.
Tomographic measurement of nonclassical radiation states
A tomographic test of the inequality in Eq. (8) can be performed by averaging the kernel functions for the operators in the ensemble averages in Eq. (8) over the two-mode homodyne data.
Tomographic measurement of nonclassical radiation states
Tomographic measurement of B (n) trace) with the respective error bars (superimposed in grey-shade) along with the theoretical values (solid trace) for a phase-squeezed state with ¯n = 5 and ¯nsq = sinh2 r = 3 squeezing photons.
Tomographic measurement of nonclassical radiation states
Tomographic measurement of Bη (n) (dashed trace) with the respective error bars (superimposed in grey-shade) along with the theoretical values (solid trace) for a phase-squeezed state, which has ¯n = 5 and ¯nsq = sinh2 r = 3 squeezing photons, and which has been degraded by a quantum efficiency η = 0.8.
Tomographic measurement of nonclassical radiation states
Tomographic measurement of Cη as defined in Eq. (8) and modified by the quantum efficiency for the twin-beam state in Eq. (10).
Tomographic measurement of nonclassical radiation states
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