نتایج جستجو برای: relaxometry

تعداد نتایج: 838  

Journal: :Medical Image Analysis 2021

• A comparison between ten methods for computing the T 2 distribution was performed. Various regularization techniques and penalty functions were tested. Our findings demonstrated need regularization. list of recommendations selecting optimal algorithms provided. The implemented packaged in a freely distributed toolbox. Multi-component relaxometry allows probing tissue microstructure by assessi...

2011
Eva K Schlachter Hans Ruedi Widmer Amadé Bregy Tarja Lönnfors-Weitzel Istvan Vajtai Nadia Corazza Vianney JP Bernau Thilo Weitzel Pasquale Mordasini Johannes Slotboom Gudrun Herrmann Serge Bogni Heinrich Hofmann Martin Frenz Michael Reinert

BACKGROUND Experimental tissue fusion benefits from the selective heating of superparamagnetic iron oxide nanoparticles (SPIONs) under high frequency irradiation. However, the metabolic pathways of SPIONs for tissue fusion remain unknown. Hence, the goal of this in vivo study was to analyze the distribution of SPIONs in different organs by means of magnetic resonance imaging (MRI) and histologi...

2013
Kathryn E. Washburn Justin E. Birdwell Joseph D. Seymour Catherine Kirkland Sarah J. Vogt

Low-field nuclear magnetic resonance (LF-NMR) relaxometry is a non-invasive technique commonly used to assess hydrogen-bearing fluids in petroleum reservoir rocks. Longitudinal T1 and transverse T2 relaxation time measurements made using LF-NMR on conventional reservoir systems provides information on rock porosity, pore size distributions, and fluid types and saturations in some cases. Recent ...

Journal: :Nanoscale 2013
Houshang Amiri Lorenzo Bordonali Alessandro Lascialfari Sha Wan Marco P Monopoli Iseult Lynch Sophie Laurent Morteza Mahmoudi

Magnetic nanoparticles (NPs) are increasingly being considered for use in biomedical applications such as biosensors, imaging contrast agents and drug delivery vehicles. In a biological fluid, proteins associate in a preferential manner with NPs. The small sizes and high curvature angles of NPs influence the types and amounts of proteins present on their surfaces. This differential display of p...

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