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MRI Contrast Enhanc...
MRI Contrast Enhancement using Gd2O3 Nanoparticles
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- Klasson, Anna, 1973- (author)
- Linköpings universitet,Medicinsk radiologi,Hälsouniversitetet
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- Engström, Maria (thesis advisor)
- Linköpings universitet,Medicinsk radiologi,Hälsouniversitetet
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(creator_code:org_t)
- ISBN 9789173939669
- Universitetsbibliotek, 2008
- English 116 s.
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Series: Linköping Studies in Health Sciences. Thesis, 1100-6013 ; 85
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Abstract
Subject headings
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- There is an increasing interest for nanomaterials in biomedical applications and in this work, nanoparticles of gadolinium oxide (Gd2O3) have been investigated as a novel contrast agent for Magnetic Resonance Imaging (MRI). Relaxation properties have been studied in aqueous solutions as well as in cell culture medium and the nanoparticles have been explored as cell labeling agents. The fluorescent properties of the particles were used to visualize the internalization in cells and doped particles were also investigated as a multimodal agent that could work as a fluorescent marker for microscopy and as a contrast enhancer for MRI.Results show that in aqueous solutions, there is a twofold increase in relaxivity for Gd2O3 compared to commercial agent Gd-DTPA. In cell culture medium as well as in cells, there is a clear T1 effect and a distinct increase in signal intensity in T1-mapped images. Fluorescent studies show that the Gd2O3 nanoparticles doped with 5% terbium have interesting fluorescent properties and that these particles could work as a multimodal contrast agent.This study shows that Gd2O3 nanoparticles possess excellent relaxation properties that are retained in more biological environments. Gd2O3 particles are suitable as a T1 contrast agent, but seem also be adequate for T2 enhancement in for instance cell labeling experiments.
Subject headings
- LANTBRUKSVETENSKAPER -- Veterinärmedicin -- Klinisk vetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Veterinary Science -- Clinical Science (hsv//eng)
Keyword
- nanoparticles
- gadolinium oxide
- magnetic resonance imaging
- contrast agent
- Medicine
- Medicin
Publication and Content Type
- vet (subject category)
- lic (subject category)
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