Results 71 to 80 of about 270,605 (207)

Phantom depth and stable phantom exactness [PDF]

open access: yesTransactions of the American Mathematical Society, Volume 359, Number 10, October 2007, pp 4829-4864, 2005
Phantom depth, phantom nonzerodivisors, and phantom exact sequences are analogues of the non-"phantom" notions which have been useful in tackling the (very difficult) localization problem in tight closure theory. In the present paper, these notions are developed further and partially reworked. For instance, although no analogue of a long exact sequence
arxiv  

Ultrasound Phantoms to Protect Patients from Novices

open access: yesThe Korean Journal of Pain, 2016
With the growing use of ultrasound for pain management, we are interested in how to teach and practice ultrasound-guided procedures. Ethically, we should not insert a needle in a patient until after much practice on a phantom.
Y. H. Kim
semanticscholar   +1 more source

Nanoparticle-free tissue-mimicking phantoms with intrinsic scattering.

open access: yesBiomedical Optics Express, 2016
We present an alternative to the conventional approach, phantoms without scattering nanoparticles, where scattering is achieved by the material itself: spherical cavities trapped in a silicone matrix.
M. Wróbel   +4 more
semanticscholar   +1 more source

A Database for Estimating Organ Dose for Chest and Head CT Scans for Arbitrary Spectra and Angular Tube Current Modulation [PDF]

open access: yes, 2012
Purpose: The purpose of this study was to develop a database for estimating organ dose in a voxelized patient model for coronary angiography and brain perfusion CT acquisitions with any spectra and angular tube current modulation setting.
Badal, Andreu   +3 more
core   +1 more source

Construction of 3‐Dimensional Printed Ultrasound Phantoms With Wall‐less Vessels

open access: yesJournal of ultrasound in medicine, 2016
Ultrasound phantoms are invaluable as training tools for vascular access procedures. We developed ultrasound phantoms with wall‐less vessels using 3‐dimensional printed chambers.
Daniil I. Nikitichev   +5 more
semanticscholar   +1 more source

MATCHING WITH PHANTOMS [PDF]

open access: yes
Searching for partners involves informational persistence that reduces future traders' matching probability. In this paper, traders that are no longer available but who left tracks on the market are called phantoms.
Bruno Decreuse
core  

The reference phantoms: voxel vs polygon

open access: yesAnnals of the ICRP, 2016
The International Commission on Radiological Protection (ICRP) reference male and female adult phantoms, described in Publication 110, are voxel phantoms based on whole-body computed tomography scans of a male and a female patient, respectively.
Chan Hyeong Kim   +11 more
semanticscholar   +1 more source

Do phantom Cuntz-Krieger algebras exist? [PDF]

open access: yesarXiv, 2012
If phantom Cuntz-Krieger algebras do not exist, then real rank zero Cuntz-Krieger algebras can be characterized by outer properties. In this survey paper, a summary of the known results on non-existence of phantom Cuntz-Krieger algebras is given.
arxiv  

Involuntary Termination from Substance Use Disorder Treatment: Unknown Phantoms, Red Flags, and Unexplained Medical Data [PDF]

open access: yes, 2018
In the United States, all treatment programs receiving public funds are required by law to regularly submit admission and discharge data, inclusive of the forced/involuntary termination or administrative discharge of clients, to their local state ...
Williams, Izaak L
core   +1 more source

Physical Multi-Layer Phantoms for Intra-Body Communications

open access: yes, 2018
This paper presents approaches to creating tissue mimicking materials that can be used as phantoms for evaluating the performance of Body Area Networks (BAN). The main goal of the paper is to describe a methodology to create a repeatable experimental BAN
Alquaydheb, Ibrahim N.   +3 more
core  

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