Results 131 to 140 of about 6,470,900 (400)

A Review of Tomographic Reconstruction Techniques for Computed Tomography [PDF]

open access: yesarXiv, 2018
Medical imaging modalities have revolutionized health-care approaches by offering a better understanding of the human anatomy. Discovery of x-rays allowed the exploiting of the micro-scaled information of human anatomy. Computed tomography is one of the well-known imaging modalities using x-rays to create images of medical and non-medical objects.
arxiv  

Re-engineering a nanodosimetry Monte Carlo code into Geant4: software design and first results

open access: yes, 2009
A set of physics models for nanodosimetry simulation is being re-engineered for use in Geant4-based simulations. This extension of Geant4 capabilities is part of a larger scale R&D project for multi-scale simulation involving adaptable, co-working ...
Gargioni, E., Grichine, V., Pia, M. G.
core   +1 more source

An approach for coherent periodogram averaging of tilt‐series data for improved contrast transfer function estimation

open access: yesFEBS Open Bio, EarlyView.
The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley   +1 more source

Temporal Resolution in Fluorescence Imaging

open access: yesFrontiers in Molecular Biosciences, 2014
Temporal resolution is a key factor for imaging rapidly occurring events in biology. In this feature article, I investigate an approximate estimate for determining the temporal resolution limit.
Partha Pratim Mondal
doaj   +1 more source

Development of an Electronic Medical Image Archiving System for Health Care in Nigeria [PDF]

open access: yesInternational Journal of Computer and Information Technology,Volume 02, Issue 04, 2013 p.706-711, 2015
Medical images require immediate access by several physicians in different places within a medical facility and access to a critically injured persons medical image, such as the x-ray, on time can be a key factor in the diagnosis and treatment of the patient.
arxiv  

Aging‐Driven Blood–Brain Barrier Dysfunction and Its Impact on CNS Cancer Susceptibility: A Comprehensive Narrative Review

open access: yesAging and Cancer, EarlyView.
Aging weakens the blood–brain barrier (BBB), increasing susceptibility to CNS cancers and complicating treatment. This review examines BBB deterioration, its impact on drug delivery, and potential interventions like targeting neuroinflammation and advanced therapies.
Quang La, Aiman Baloch, David F. Lo
wiley   +1 more source

Emerging Translational Opportunities in Comparative Oncology With Companion Canine Cancers: Radiation Oncology

open access: yesFrontiers in Oncology, 2019
It is estimated that more than 6 million pet dogs are diagnosed with cancer annually in the USA. Both primary care and specialist veterinarians are frequently called upon to provide clinical care that improves the quality and/or quantity of life for ...
Michael W. Nolan   +4 more
doaj   +1 more source

“Now Boarding: The Flight from Physics” David Goodstein’s acceptance speech for the 1999 Oersted Medal presented by the American Association of Physics Teachers, 11 January 1999 [PDF]

open access: yes, 1999
All across the country, the number of students majoring in physics is said to be at its lowest point since Sputnik, 40 years ago. The most important role of the college physics course today seems to be to weed out a few poor souls who might otherwise ...
Goodstein, David
core  

The RICH detector of the AMS-02 experiment: status and physics prospects

open access: yes, 2008
The Alpha Magnetic Spectrometer (AMS), whose final version AMS-02 is to be installed on the International Space Station (ISS) for at least 3 years, is a detector designed to measure charged cosmic ray spectra with energies up to the TeV region and with ...
Aguilar-Benitez, M.   +39 more
core   +2 more sources

The Long Term Effects of a 12‐Session Community Exercise Program on Health Measures in Cancer Patients

open access: yesAging and Cancer, EarlyView.
ABSTRACT Purpose To assess the long‐term effects of a community cancer exercise program on quality of life, fatigue, weight, waist circumference, physical activity levels, lower extremity strength, body mass index (BMI), heart rate, and blood pressure, across non‐metastatic and metastatic patients.
Isaac Oppong, Roozbeh Naemi
wiley   +1 more source

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