Results 31 to 40 of about 154,845 (263)

Gibbs ringing in diffusion MRI [PDF]

Magnetic Resonance in Medicine, 2015
PurposeTo study and reduce the effect of Gibbs ringing artifact on computed diffusion parameters.MethodsWe reduce the ringing by extrapolating the k‐space of each diffusion weighted image beyond the measured part by selecting an adequate regularization term. We evaluate several regularization terms and tune the regularization parameter to find the best
Veraart, Jelle, Fieremans, Els, Jelescu, Ileana O., Knoll, Florian, Novikov, Dmitry S.   +4 more
openaire   +3 more sources

Renal MRI Diffusion: Experimental Protocol [PDF]

, 2021
AbstractRenal diffusion-weighted imaging (DWI) can be used to obtain information on the microstructure of kidney tissue, and has the potential to provide MR-biomarkers for functional renal imaging. Here we describe in a step-by-step experimental protocol the MRI method for measuring renal diffusion coefficients in rodents using ADC or IVIM models. Both
Periquito, J.S., Meier, M., Niendorf, T., Pohlmann, A., Jerome, N.P.   +4 more
openaire   +3 more sources

An Open MRI Dataset For Multiscale Neuroscience

Scientific Data, 2022
Measurement(s) Brain anatomy • Brain activity • Diffusion • Brain microstructure • Functional connectivity • Structural connectivity Technology Type(s) magnetic resonance imaging (MRI) • Functional Magnetic Resonance Imaging • Diffusion Weighted Imaging •
Jessica Royer, Raúl Rodríguez-Cruces, Shahin Tavakol, Sara Larivière, Peer Herholz, Qiongling Li, Reinder Vos de Wael, Casey Paquola, Oualid Benkarim, Bo-yong Park, Alexander J. Lowe, Daniel Margulies, Jonathan Smallwood, Andrea Bernasconi, Neda Bernasconi, Birgit Frauscher, Boris C. Bernhardt   +16 more
doaj   +1 more source

Correlation between ultrasound-guided percutaneous breast biopsy and diffusion-weighted magnetic resonance imaging of the breast for evaluation of solid breast lesions

The Egyptian Journal of Radiology and Nuclear Medicine, 2020
Background MRI’s role had been increasing in breast imaging. In this study, we evaluated the role of diffusion-weighted MRI in correlation with ultrasound-guided percutaneous breast biopsy for diagnosis of solid breast lesions.
Osama Lotfy Alabd, Mohamed Shawky Alwarraky, Doha Maher Taei, Bayan Eid, Manal Ebraheim Gomaa   +4 more
doaj   +1 more source

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

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

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

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

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