Results 31 to 40 of about 2,651,897 (274)

Nuclear Magnetic Resonance Imaging with 90 nm Resolution [PDF]

Nature Nanotech. 2, 301 (2007), 2007
Magnetic resonance imaging, based on the manipulation and detection of nuclear spins, is a powerful imaging technique that typically operates on the scale of millimeters to microns. Using magnetic resonance force microscopy, we have demonstrated that magnetic resonance imaging of nuclear spins can be extended to a spatial resolution better than 100 nm.
arxiv   +1 more source

Magnetic resonance imaging of perfusion [PDF]

Magnetic Resonance in Medicine, 1990
AbstractRecent developments have shown that diffusion and blood microcirculation (perfusion) could be imaged and measured noninvasively by MRI. The purpose of this presentation is to overview the different approaches that use B0 field gradients to monitor diffusion / perfusion. The principles of these different methods are discussed together with their
openaire   +5 more sources

Magnetic Resonance Imaging of Electrolysis. [PDF]

Scientific Reports, 2015
AbstractThis study explores the hypothesis that Magnetic Resonance Imaging (MRI) can image the process of electrolysis by detecting pH fronts. The study has relevance to real time control of cell ablation with electrolysis. To investigate the hypothesis we compare the following MR imaging sequences: T1 weighted, T2 weighted and Proton Density (PD ...
Meir, Arie, Hjouj, Mohammad, Rubinsky, Liel, Rubinsky, Boris   +3 more
openaire   +4 more sources

Magnetic resonance imaging brain atrophy assessment in primary age-related tauopathy (PART) [PDF]

, 2019
Alzheimer disease (AD) is a neurodegenerative disorder characterized pathologically by the accumulation of amyloid-beta (Aβ) plaques and tau neurofibrillary tangles (NFTs).
A Bejanin, A Serrano-Pozo, A Serrano-Pozo, AR Jensen, BT Hyman, C Bancher, DL Beekly, DL Beekly, EL Koedam, H Abikoff, HG Edith Kaplan, JB Pereira, JC Morris, JF Crary, JV Baldo, K Ikeda, KA Jellinger, KA Jellinger, KA Josephs, KA Josephs, L Harper, LM Besser, LM Besser, LM Besser, Merilee Teylan, MF Folstein, PT Nelson, RM Reitan, SM Resnick   +28 more
core   +1 more source

Diffusional kurtosis imaging: The quantification of non‐gaussian water diffusion by means of magnetic resonance imaging

Magnetic Resonance in Medicine, 2005
A magnetic resonance imaging method is presented for quantifying the degree to which water diffusion in biologic tissues is non‐Gaussian. Since tissue structure is responsible for the deviation of water diffusion from the Gaussian behavior typically ...
J. Jensen, J. Helpern, A. Ramani, Hanzhang Lu, K. Kaczynski   +4 more
semanticscholar   +1 more source

The Evaluation of Zoomed Echo-Planar Diffusion-Weighted Magnetic Resonance Imaging With Two-dimensional Spatial-Selective Radiofrequency Excitation Pulses in Patients With Hilar Cholangiocarcinoma

Frontiers in Oncology, 2022
BackgroundWe aimed to investigate the feasibility and application of using the zoomed diffusion-weighted echo-planar imaging (z-EPI DWI) sequences for hilar cholangiocarcinoma assessment compared with conventional single-shot EPI diffusion-weighted ...
Jingjing Liu, Mengyue Huang, Yanan Ren, Man Xu, Yinhua Li, Jingliang Cheng, Jinxia Zhu   +6 more
doaj   +1 more source

Accelerated nanoscale magnetic resonance imaging through phase multiplexing [PDF]

Applied Physics Letters 106, 213101 (2015), 2014
We report a method for accelerated nanoscale nuclear magnetic resonance imaging by detecting several signals in parallel. Our technique relies on phase multiplexing, where the signals from different nuclear spin ensembles are encoded in the phase of an ultrasensitive magnetic detector.
arxiv   +1 more source

The magnetic-resonance force microscope: a new tool for high-resolution, 3-D, subsurface scanned probe imaging [PDF]

, 2003
The magnetic-resonance force microscope (MRFM) is a novel scanned probe instrument which combines the three-dimensional (3-D) imaging capabilities of magnetic-resonance imaging with the high sensitivity and resolution of atomic-force microscopy.
Gosnell, Timothy R., Hammel, P. Chris, Midzor, Melissa M., Pelekhov, Denis V., Roukes, Michael L., Wigen, Philip E.   +5 more
core   +1 more source

Magnetic Resonance Imaging of the lumbar spine in people without back pain

AL-QADISIYAH MEDICAL JOURNAL, 2017
Background: The relation between abnormalities in the lumbar spine and low back pain is controversial ,incidental findings might lead to additional testing & the potential for unnecessary intervention.Objective: We examined the prevalence of abnormal ...
Nada R. Alharis
semanticscholar   +1 more source

Microwave ablation of multifocal primary liver cancer guided by real-time 3.0T MRI

International Journal of Hyperthermia, 2023
Objective To investigate the feasibility and efficacy of real-time 3.0 T magnetic resonance imaging (MRI) guided percutaneous microwave ablation (MWA) in the treatment of multifocal liver cancer.Methods A total of 76 lesions in 26 patients with ...
Fenghai Liu, Baozhou Hou, Zhuofu Li, Lei Zhang, Yingwen Zhou, Hao Bian, Zhaoyang Huo   +6 more
doaj   +1 more source