Results 41 to 50 of about 270,605 (207)

The phantom menace in representation theory [PDF]

open access: yes, 2014
Our principal goal in this overview is to explain and motivate the concept of a phantom in the representation theory of a finite dimensional algebra $\Lambda$.
Huisgen-Zimmermann, Birge
core  

Patient-specific stopping power calibration for proton therapy planning based on single-detector proton radiography. [PDF]

open access: yes, 2015
A simple robust optimizer has been developed that can produce patient-specific calibration curves to convert x-ray computed tomography (CT) numbers to relative stopping powers (HU-RSPs) for proton therapy treatment planning.
Bentefour, EH   +5 more
core   +1 more source

Generation of anatomically realistic numerical phantoms for photoacoustic and ultrasonic breast imaging

open access: yesJournal of Biomedical Optics, 2017
. Photoacoustic computed tomography (PACT) and ultrasound computed tomography (USCT) are emerging modalities for breast imaging. As in all emerging imaging technologies, computer-simulation studies play a critically important role in developing and ...
Yang Lou   +4 more
semanticscholar   +1 more source

Multilayered tissue mimicking skin and vessel phantoms with tunable mechanical, optical, and acoustic properties.

open access: yesMedical Physics (Lancaster), 2016
PURPOSE This paper describes the design, fabrication, and characterization of multilayered tissue mimicking skin and vessel phantoms with tunable mechanical, optical, and acoustic properties.
Alvin I. Chen   +6 more
semanticscholar   +1 more source

Assessment of image quality and dose calculation accuracy on kV CBCT, MV CBCT, and MV CT images for urgent palliative radiotherapy treatments. [PDF]

open access: yes, 2016
A clinical workflow was developed for urgent palliative radiotherapy treatments that integrates patient simulation, planning, quality assurance, and treatment in one 30-minute session.
Barani, Igor   +9 more
core   +1 more source

Fat-Water Phantoms for Magnetic Resonance Imaging Validation: A Flexible and Scalable Protocol.

open access: yesJournal of Visualized Experiments, 2018
As new techniques are developed to image adipose tissue, methods to validate such protocols are becoming increasingly important. Phantoms, experimental replicas of a tissue or organ of interest, provide a low cost, flexible solution.
Emily C. Bush   +6 more
semanticscholar   +1 more source

Quantitative characterization of viscoelastic behavior in tissue-mimicking phantoms and ex vivo animal tissues. [PDF]

open access: yes, 2018
Viscoelasticity of soft tissue is often related to pathology, and therefore, has become an important diagnostic indicator in the clinical assessment of suspect tissue.
Bajwa, Neha   +7 more
core   +3 more sources

Biomimetic 3D-printed neurovascular phantoms for near-infrared fluorescence imaging.

open access: yesBiomedical Optics Express, 2018
Emerging three-dimensional (3D) printing technology enables the fabrication of optically realistic and morphologically complex tissue-simulating phantoms for the development and evaluation of novel optical imaging products.
Yi Liu   +9 more
semanticscholar   +1 more source

The Phantom of the OPRA [PDF]

open access: yesMod.Phys.Lett. A21 (2006) 1099-1106, 2005
The Observed Perlmutter-Riess Acceleration (OPRA) implies that the expansion of the Universe is currently increasing and is motivation for the so-called phantom energy models. We consider the dynamics of phantom scalar field models. An important physical time constraint, which can be used to rule out many cosmological models, is obtained from the ...
arxiv   +1 more source

An interferometric technique for B/A measurement [PDF]

open access: yes, 1995
An isentropic phase method is described for measuringin vitro the acoustic nonlinearity parameterB/A of several aqueous buffers, protein solutions, lipid oils, and emulsions.
Apfel, R. E., Everbach, E. Carr
core   +2 more sources

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