Results 31 to 40 of about 197,943 (293)

Utilizing Fast Spin Echo MRI to Reduce Image Artifacts and Improve Implant/Tissue Interface Detection in Refractory Parkinson’s Patients with Deep Brain Stimulators

open access: yesParkinson's Disease, 2014
Introduction. In medically refractory Parkinson’s disease (PD) deep-brain stimulation (DBS) is an effective therapeutic tool. Postimplantation MRI is important in assessing tissue damage and DBS lead placement accuracy.
Subhendra N. Sarkar   +3 more
doaj   +1 more source

Evaluation of 2D Imaging Schemes for Pulsed Arterial Spin Labeling of the Human Kidney Cortex

open access: yesDiagnostics, 2018
A number of imaging readout schemes are proposed for renal arterial spin labeling (ASL) to quantify kidney cortex perfusion, including gradient echo-based methods of balanced fast field echo (bFFE) and gradient-echo echo-planar imaging (GE-EPI), or spin ...
Charlotte E. Buchanan   +2 more
doaj   +1 more source

The Spin Echo, Entropy, and Experimental Design

open access: yesProceedings, 2020
The spin echo experiment is an important tool in magnetic resonance for exploring the coupling of spin systems to their local environment. The strong couplings in a typical Electron Spin Resonance (ESR) experiment lead to rapid relaxation effects that ...
Keith Earle, Oleks Kazakov
doaj   +1 more source

Ultrafast optical spin echo for electron spins in semiconductors

open access: yes, 2009
Spin-based quantum computing and magnetic resonance techniques rely on the ability to measure the coherence time, T2, of a spin system. We report on the experimental implementation of all-optical spin echo to determine the T2 time of a semiconductor ...
C. P. Slichter   +6 more
core   +1 more source

How accurate is MOLLI T1 mapping in vivo? Validation by spin echo methods. [PDF]

open access: yesPLoS ONE, 2014
T1 mapping is a promising quantitative tool for assessing diffuse cardiomyopathies. The purpose of this study is to quantify in vivo accuracy of the Modified Look-Locker Inversion Recovery (MOLLI) cardiac T1 mapping sequence against the spin echo gold ...
Mitchell A Cooper   +5 more
doaj   +1 more source

Assessment of image quality of cervical spine complications using Three Magnetic Resonance Imaging Sequences

open access: yesمجلة بغداد للعلوم, 2023
Examining and comparing the image quality of degenerative cervical spine diseases through the application of three MRI sequences; the Two-Dimension T2 Weighed Turbo Spin Echo (2D T2W TSE), the Three-Dimension T2 Weighted Turbo Spin Echo (3D T2W TSE ...
Nabaa A. Rasheed Naji
doaj   +1 more source

Geometric spin echo under zero field

open access: yesNature Communications, 2016
The sensitivity of single spins to their local environment makes them promising components for future quantum information and sensing technology. Here, the authors use geometric spin echo to demonstrate the control of nitrogen-vacancies via the crystal ...
Yuhei Sekiguchi   +5 more
doaj   +1 more source

Generation of Synthetic-Pseudo MR Images from Real CT Images

open access: yesTomography, 2022
This study aimed to generate synthetic MR images from real CT images. CT# mean and standard deviation of a moving window across every pixel in the reconstructed CT images were mapped to their corresponding tissue-mimicking types.
Isam F. Abu-Qasmieh   +3 more
doaj   +1 more source

Coherent spin control at the quantum level in an ensemble-based optical memory

open access: yes, 2015
Long-lived quantum memories are essential components of a long-standing goal of remote distribution of entanglement in quantum networks. These can be realized by storing the quantum states of light as single-spin excitations in atomic ensembles. However,
Afzelius, Mikael   +6 more
core   +2 more sources

Spin echo in spinor dipolar Bose-Einstein condensates

open access: yes, 2008
We theoretically propose and numerically realize spin echo in a spinor Bose--Einstein condensate (BEC). We investigate the influence on the spin echo of phase separation of the condensate.
A. S. Borovik-Romanov   +6 more
core   +1 more source

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