Results 1 to 10 of about 2,651,897 (274)

170 Nanometer Nuclear Magnetic Resonance Imaging using Magnetic Resonance Force Microscopy [PDF]

open access: yesJ. Mag. Reson. 162, 336 (2003), 2002
We demonstrate one-dimensional nuclear magnetic resonance imaging of the semiconductor GaAs with 170 nanometer slice separation and resolve two regions of reduced nuclear spin polarization density separated by only 500 nanometers. This is achieved by force detection of the magnetic resonance, Magnetic Resonance Force Microscopy (MRFM), in combination ...
Barrett   +21 more
arxiv   +4 more sources

Fourier Magnetic Imaging with Nanoscale Resolution and Compressed Sensing Speed-up using Electronic Spins in Diamond [PDF]

open access: yes, 2014
Optically-detected magnetic resonance using Nitrogen Vacancy (NV) color centres in diamond is a leading modality for nanoscale magnetic field imaging, as it provides single electron spin sensitivity, three-dimensional resolution better than 1 nm, and applicability to a wide range of physical and biological samples under ambient conditions.
A Sodickson   +43 more
arxiv   +3 more sources

Optical Magnetometry [PDF]

open access: yes, 2006
Some of the most sensitive methods of measuring magnetic fields utilize interactions of resonant light with atomic vapor. Recent developments in this vibrant field are improving magnetometers in many traditional areas such as measurement of geomagnetic anomalies and magnetic fields in space, and are opening the door to new ones, including, dynamical ...
A Balogh   +97 more
arxiv   +4 more sources

Plaque Characteristics in Young Adults With Symptomatic Intracranial Atherosclerotic Stenosis: A Preliminary Study

open access: yesFrontiers in Neurology, 2022
PurposeTo determine how intracranial vascular wall and atherosclerosis plaque characteristics differ between young and old adults with sICAS.MethodsEighty-four consecutive patients with sICAS who underwent high-resolution magnetic resonance imaging ...
Ling Li   +10 more
doaj   +1 more source

Pediatric Cardiac Magnetic Resonance Reference Values for Biventricular Volumes Derived From Different Contouring Techniques [PDF]

open access: yes, 2023
Background Measurement of ventricular volumes and function using MRI is an important tool in pediatric congenital heart disease. However, normal values for children are sparce and analysis methods are inconsistent.
Boroni Grazioli, Simona   +8 more
core   +1 more source

Static and dynamic changes of intrinsic brain local connectivity in internet gaming disorder

open access: yesBMC Psychiatry, 2023
Background Studies have revealed that intrinsic neural activity varies over time. However, the temporal variability of brain local connectivity in internet gaming disorder (IGD) remains unknown. The purpose of this study was to explore the alterations of
Xiaoyu Niu   +10 more
doaj   +1 more source

Magnetic resonance temperature imaging [PDF]

open access: yesInternational Journal of Hyperthermia, 2005
Continuous, real-time, 3D temperature mapping during a hyperthermic procedure may provide (i) enhanced safety by visualizing temperature maps in and around the treated region, (ii) improved efficiency by adapting local energy deposition with feedback coupling algorithms and (iii) therapy end-points based on the accumulated thermal dose.
Denis de Senneville, Baudouin   +2 more
openaire   +7 more sources

Dynamic Altered Amplitude of Low-Frequency Fluctuations in Patients With Major Depressive Disorder

open access: yesFrontiers in Psychiatry, 2021
Background: Major depressive disorder (MDD) has demonstrated abnormalities of static intrinsic brain activity measured by amplitude of low-frequency fluctuation (ALFF).
Ruiping Zheng   +11 more
doaj   +1 more source

Outcomes of Cardiovascular Magnetic Resonance Imaging in Patients Recently Recovered From Coronavirus Disease 2019 (COVID-19)

open access: yesJAMA cardiology, 2020
Key Points Question What are the cardiovascular effects in unselected patients with recent coronavirus disease 2019 (COVID-19)? Findings In this cohort study including 100 patients recently recovered from COVID-19 identified from a COVID-19 test center ...
V. Puntmann   +11 more
semanticscholar   +1 more source

Magnetic resonance imaging features of bile duct adenoma

open access: yesFrontiers in Oncology, 2023
ObjectivesTo evaluate the magnetic resonance imaging (MRI) features of bile duct adenoma.MethodsThe data of 28 patients [with 32 pathologically confirmed bile duct adenomas, including 15 with malignant change (malignant group) and 17 without malignant ...
Mengyue Huang   +7 more
doaj   +1 more source

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