نتایج جستجو برای: longitudinal relaxivity

تعداد نتایج: 127871  

Background: Magnetic resonance imaging (MRI) using nanostructures has been a proper method for tumor targeting purposes. Different MRI nanomaterials, targeting agents and anticancer drugs have been used for targeting of tumors. Objectives: This study aims to consider the MRI property of doxorubicin (DOX)-loaded gadolinium/13X zeolite/folic acid (Gd3+/13X/FA) nanocomposite.<br /...

Journal: :Journal of Magnetism and Magnetic Materials 2021

The controlled synthesis of water-dispersible iron oxide nanoparticles is essential for biomedical application. For the continuous growth in polyols, it still unclear how temperature will affect nanoparticles. This work studies role reaction on diethylene glycol (DEG). At 235 °C and below, nanoparticle size increases with increase temperature. These are highly water dispersible. Interestingly, ...

2015
Michael A. Bruckman Allen VanMeter Nicole F. Steinmetz

Nanomanufacturing of nanoparticles is critical for potential translation and commercialization. Continuous flow devices can alleviate this need through unceasing production of nanoparticles. Here we demonstrate the scaled-up production of spherical nanoparticles functionalized with biomedical cargos from the rod-shaped plant virus tobacco mosaic virus (TMV) using a mesofluidic, continued flow m...

2012
Gholamreza Azizian Nader Riyahi-Alam Soheila Haghgoo Hamid Reza Moghimi Reza Zohdiaghdam Behrooz Rafiei Ensieh Gorji

Despite its good resolution, magnetic resonance imaging intrinsically has low sensitivity. Recently, contrast agent nanoparticles have been used as sensitivity and contrast enhancer. The aim of this study was to investigate a new controlled synthesis method for gadolinium oxide-based nanoparticle preparation. For this purpose, diethyleneglycol coating of gadolinium oxide (Gd2O3-DEG) was perform...

Journal: :Dalton transactions 2009
Aline Nonat Marion Giraud Christelle Gateau Pascal H Fries Lothar Helm Marinella Mazzanti

The two new tripodal picolinate H(3)ebpatcn (1-carboxyethyl-4,7-bis((6-carboxypyridin-2-yl)methyl)-1,4,7-triazacyclononane) and H(4)pbpatcn (1-methylphosphonic-acid-4,7-bis((6-carboxypyridin-2-yl)methyl)-1,4,7-triazacyclononane) ligands based on the 1,4,7-triazacyclononane anchor were prepared and their lanthanide complexes were characterized by NMR, fluorescence and potentiometric studies. The...

Journal: :Chemical communications 2015
Oliver J Stacey Angelo J Amoroso James A Platts Peter N Horton Simon J Coles David Lloyd Catrin F Williams Anthony J Hayes Jay J Dunsford Simon J A Pope

Facile conjugation of a luminescent cyclometalated Pt(II) complex with a DO3A-derived Gd(III) moiety yields a hybrid species with visible luminescence and enhanced relaxivity.

Journal: :Chemical communications 2010
Kevin Guo Mikhail Y Berezin Jie Zheng Walter Akers Franck Lin Bao Teng Olga Vasalatiy Amir Gandjbakhche Gary L Griffiths Samuel Achilefu

A new gadolinium chelating NIR fluorescent molecular probe increases T(1) relaxivity of water protons, facilitating combined optical and magnetic resonance imaging.

Journal: :Journal of the American Chemical Society 2005
Eva Tóth Robert D Bolskar Alain Borel Gabriel González Lothar Helm André E Merbach Balaji Sitharaman Lon J Wilson

The water-soluble endohedral gadofullerene derivatives, Gd@C(60)(OH)(x) and Gd@C(60)[C(COOH)(2)](10), have been characterized with regard to their MRI contrast agent properties. Water-proton relaxivities have been measured in aqueous solution at variable temperature (278-335 K), and for the first time for gadofullerenes, relaxivities as a function of magnetic field (5 x 10(-4) to 9.4 T; NMRD pr...

2016
Po-Chin Liang Yung-Chu Chen Chi-Feng Chiang Lein-Ray Mo Shwu-Yuan Wei Wen-Yuan Hsieh Win-Li Lin

In this study, we developed functionalized superparamagnetic iron oxide (SPIO) nanoparticles consisting of a magnetic Fe3O4 core and a shell of aqueous stable polyethylene glycol (PEG) conjugated with doxorubicin (Dox) (SPIO-PEG-D) for tumor magnetic resonance imaging (MRI) enhancement and chemotherapy. The size of SPIO nanoparticles was ~10 nm, which was visualized by transmission electron mic...

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