Results 61 to 70 of about 270,605 (207)

Development of a blood oxygenation phantom for photoacoustic tomography combined with online pO2 detection and flow spectrometry [PDF]

open access: yes, 2019
Photoacoustic tomography (PAT) is intrinsically sensitive to blood oxygen saturation (sO2) in vivo. However, making accurate sO2 measurements without knowledge of tissue- and instrumentation-related correction factors is extremely challenging. We have developed a low-cost flow phantom system to facilitate validation of photoacoustic tomography systems.
arxiv   +1 more source

Design of Anisotropic Diffusion Hardware Fiber Phantoms [PDF]

open access: yes, 2009
A gold standard for the validation of diffusion weighted magnetic resonance imaging (DW-MRI) in brain white matter (WM) is essential for clinical purposes but still not available.
Baete, Steven   +3 more
core   +1 more source

Walled Carotid Bifurcation Phantoms for Imaging Investigations of Vessel Wall Motion and Blood Flow Dynamics

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2016
As a major application domain of vascular ultrasound, the carotid artery has long been the subject of anthropomorphic phantom design. It is nevertheless not trivial to develop walled carotid phantoms that are compatible for use in integrative imaging of ...
Adrian J. Y. Chee   +3 more
semanticscholar   +1 more source

Phantom Black Holes [PDF]

open access: yesarXiv, 2006
The exact solutions of electrically charged phantom black holes with the cosmological constant are constructed. They are labelled by the mass, the electrical charge, the cosmological constant and the coupling constant between the phantom and the Maxwell field. It is found that the phantom has important consequences on the properties of black holes.
arxiv  

A feasible and automatic free tool for T1 and ECV mapping [PDF]

open access: yes, 2017
Purpose: Cardiac magnetic resonance (CMR) is a useful non-invasive tool for characterizing tissues and detecting myocardial fibrosis and edema. Estimation of extracellular volume fraction (ECV) using T1 sequences is emerging as an accurate biomarker in ...
Altabella, Luisa   +8 more
core   +1 more source

Design and Fabrication of Kidney Phantoms for Internal Radiation Dosimetry Using 3D Printing Technology

open access: yesJournal of Nuclear Medicine, 2016
Currently, the validation of multimodal quantitative imaging and absorbed dose measurements is impeded by the lack of suitable, commercially available anthropomorphic phantoms of variable sizes and shapes.
J. Tran-Gia, S. Schlögl, M. Lassmann
semanticscholar   +1 more source

Can Phantom-Dominated Universe Decelerate Also in Future ? [PDF]

open access: yesarXiv, 2007
Here Randall-Sundrum brane-gravity models of the homogeneous and flat universe, dominated by phantom fluid, is considered. It is noted that brane-gravity corrections effect the behaviour of phantom fluid in RS-II model (where brane-tension $\lambda$ is negative) drastically.
arxiv  

Brain-Blood Partition Coefficient and Cerebral Blood Flow in Canines Using Calibrated Short TR Recovery (CaSTRR) Correction Method. [PDF]

open access: yes, 2019
The brain-blood partition coefficient (BBPC) is necessary for quantifying cerebral blood flow (CBF) when using tracer based techniques like arterial spin labeling (ASL).
Head, Elizabeth   +5 more
core  

Learning by observation for surgical subtasks: Multilateral cutting of 3D viscoelastic and 2D Orthotropic Tissue Phantoms

open access: yesIEEE International Conference on Robotics and Automation, 2015
Automating repetitive surgical subtasks such as suturing, cutting and debridement can reduce surgeon fatigue and procedure times and facilitate supervised tele-surgery.
Adithyavairavan Murali   +9 more
semanticscholar   +1 more source

Geometrically complex 3D-printed phantoms for diffuse optical imaging

open access: yesBiomedical Optics Express, 2017
Tissue-equivalent phantoms that mimic the optical properties of human and animal tissues are commonly used in diffuse optical imaging research to characterize instrumentation or evaluate an image reconstruction method.
Laura Dempsey   +4 more
semanticscholar   +1 more source

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