Results 31 to 40 of about 288,901 (266)

Optimization of diffusion imaging for multiple target regions using maximum likelihood estimation

Current Directions in Biomedical Engineering, 2017
In this work a procedure is proposed to determine an optimal distribution of b-values in diffusion MRI measu-rements. The optimization procedure uses a method of Maximum Likelihood Estimation which can operate on any given number of b-values, values of ...
Bielak Lars, Bock Michael
doaj   +1 more source

Simultaneous in vivo positron emission tomography and magnetic resonance imaging [PDF]

, 2008
Positron emission tomography (PET) and magnetic resonance imaging (MRI) are widely used in vivo imaging technologies with both clinical and biomedical research applications.
Catana, Ciprian, Cherry, Simon R., Jacobs, Russell E., Judenhofer, Martin S., Pichler, Bernd J., Procissi, Daniel, Qi, Jinyi, Wu, Yibao   +7 more
core   +2 more sources

Evaluating fibre orientation dispersion in white matter: Comparison of diffusion MRI, histology and polarized light imaging

NeuroImage, 2017
Diffusion MRI is an exquisitely sensitive probe of tissue microstructure, and is currently the only non-invasive measure of the brain's fibre architecture.
Jeroen Mollink, Michiel Kleinnijenhuis, Anne-Marie van Cappellen van Walsum, Stamatios N. Sotiropoulos, Michiel Cottaar, Christopher Mirfin, Mattias P. Heinrich, Mark Jenkinson, Menuka Pallebage-Gamarallage, Olaf Ansorge, Saad Jbabdi, Karla L. Miller   +11 more
doaj   +1 more source

The Digital Brain Bank, an open access platform for post-mortem imaging datasets

eLife, 2022
Post-mortem magnetic resonance imaging (MRI) provides the opportunity to acquire high-resolution datasets to investigate neuroanatomy and validate the origins of image contrast through microscopy comparisons. We introduce the Digital Brain Bank (open.win.
Benjamin C Tendler, Taylor Hanayik, Olaf Ansorge, Sarah Bangerter-Christensen, Gregory S Berns, Mads F Bertelsen, Katherine L Bryant, Sean Foxley, Martijn P van den Heuvel, Amy FD Howard, Istvan N Huszar, Alexandre A Khrapitchev, Anna Leonte, Paul R Manger, Ricarda AL Menke, Jeroen Mollink, Duncan Mortimer, Menuka Pallebage-Gamarallage, Lea Roumazeilles, Jerome Sallet, Lianne H Scholtens, Connor Scott, Adele Smart, Martin R Turner, Chaoyue Wang, Saad Jbabdi, Rogier B Mars, Karla L Miller   +27 more
doaj   +1 more source

What’s the clinical significance of adding diffusion and perfusion MRI in the differentiation of glioblastoma multiforme and solitary brain metastasis?

The Egyptian Journal of Radiology and Nuclear Medicine, 2017
Objective: To evaluate the additional diagnostic value of diffusion and perfusion MRI in the differentiation of glioblastoma multiforme (GBM) and solitary brain metastasis.
Amr F. Mourad, Hosam El-din G. Mohammad, Mona M. Sayed, Mohamed A. Ragae   +3 more
doaj   +1 more source

Dissipative and nonaxisymmetric standard-MRI in Kepler disks [PDF]

, 2009
Deviations from axial symmetry are necessary to maintain self-sustained MRI-turbulence. We define the parameters region where nonaxisymmetric MRI is excited and study dependence of the unstable modes structure and growth rates on the relevant parameters.
Brandenburg, Cowling, Elsasser, Fromang, Fromang, G. Rüdiger, Hawley, Hawley, Kitchatinov, Kitchatinov, L. L. Kitchatinov, Lesur, Rüdiger, Rüdiger, Simon   +14 more
core   +1 more source

The Role of Diffusion-Weighted MRI and Apparent Diffusion Coefficient in Assessment of Diabetic Kidney Disease: Preliminary Experience Study

International Journal of Nephrology and Renovascular Disease, 2021
Nasr Mohamed Mohamed Osman,1 Moustafa Abdel Kader,1 Taghreed A EL Aziz Nasr,1 Mohamed Ahmed Sharawy,2 Hesham Kamal Habeeb Keryakos2 1Radiology Department, Faculty of Medicine, Minia University, El Minia, Egypt; 2Internal Medicine Department, Faculty of ...
Mohamed Osman NM, Abdel Kader M, Aziz Nasr TAEL, Sharawy MA, Keryakos HKH   +4 more
doaj  

Variability of non-Gaussian diffusion MRI and intravoxel incoherent motion (IVIM) measurements in the breast. [PDF]

PLoS ONE, 2018
We prospectively examined the variability of non-Gaussian diffusion magnetic resonance imaging (MRI) and intravoxel incoherent motion (IVIM) measurements with different numbers of b-values and excitations in normal breast tissue and breast lesions ...
Mami Iima, Masako Kataoka, Shotaro Kanao, Makiko Kawai, Natsuko Onishi, Sho Koyasu, Katsutoshi Murata, Akane Ohashi, Rena Sakaguchi, Kaori Togashi   +9 more
doaj   +1 more source

Multidimensional diffusion MRI

Journal of Magnetic Resonance, 2017
Principles from multidimensional NMR spectroscopy, and in particular solid-state NMR, have recently been transferred to the field of diffusion MRI, offering non-invasive characterization of heterogeneous anisotropic materials, such as the human brain, at an unprecedented level of detail.
openaire   +2 more sources

Analysis of the magneto-rotational instability with the effect of cosmic-ray diffusion

, 2014
We present the results obtained from linear stability analysis and 2.5-dimensional magnetohydrodynamic (MHD) simulations of the magnetorotational instability (MRI), including the effects of cosmic rays (CRs).
Ko, Chung-Ming, Kuwabara, Takuhito
core   +1 more source