Reproducibility of in vivo magnetic resonance imaging T 1 rho and T 2 relaxation time measurements of hip cartilage at 3.0T in healthy volunteers

2017 ◽  
Vol 47 (4) ◽  
pp. 1022-1033 ◽  
Author(s):  
Angeline Nemeth ◽  
Lucy Marco ◽  
Florent Boutitie ◽  
Michael Sdika ◽  
Denis Grenier ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Relaxation Time ◽  
Magnetic Resonance ◽  
Healthy Volunteers ◽  
Resonance Imaging ◽  
Hip Cartilage

scholarly journals Magnetic Resonance Imaging of Atherosclerosis Using CD81-Targeted Microparticles of Iron Oxide in Mice

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Fei Yan ◽  
Wei Yang ◽  
Xiang Li ◽  
Hongmei Liu ◽  
Xiang Nan ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Relaxation Time ◽  
Iron Oxide ◽  
Magnetic Resonance ◽  
T2 Relaxation Time ◽  
Resonance Imaging ◽  
T2 Relaxation ◽  
Atherosclerotic Lesions ◽  
Deficient Mice

The goal of this study is to investigate the feasibility of using CD81- (Cluster of Differentiation 81 protein-) targeted microparticles of iron oxide (CD81-MPIO) for magnetic resonance imaging (MRI) of the murine atherosclerosis. CD81-MPIO and IgG- (Immunoglobulin G-) MPIO were prepared by covalently conjugating, respectively, with anti-CD81 monoclonal and IgG antibodies to the surface of the tosyl activated MPIO. The relevant binding capability of the MPIO was examined by incubating them with murine bEnd.3 cells stimulated with phenazine methosulfate (PMS) and its effect in shortening T2 relaxation time was also examined. MRI in apolipoprotein E-deficient mice was studied in vivo. Our results show that CD81-MPIO, but not IgG-MPIO, can bind to the PMS-stimulated bEnd.3 cells. The T2 relaxation time was significantly shortened for stimulated bEnd.3 cells when compared with IgG-MPIO. In vivo MRI in apolipoprotein E-deficient mice showed highly conspicuous areas of low signal after CD81-MPIO injection. Quantitative analysis of the area of CD81-MPIO contrast effects showed 8.96- and 6.98-fold increase in comparison with IgG-MPIO or plain MPIO, respectively (P<0.01). Histological assay confirmed the expression of CD81 and CD81-MPIO binding onto atherosclerotic lesions. In conclusion, CD81-MPIO allows molecular assessment of murine atherosclerotic lesions by magnetic resonance imaging.

scholarly journals In Vivo 3T Magnetic Resonance Imaging Using a Biologically Specific Contrast Agent for Prostate Cancer: A Nude Mouse Model

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Christopher Brian Abraham ◽  
Prashant Jani ◽  
Roxanne Turuba ◽  
Michael Campbell ◽  
Ingeborg Zehbe ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prostate Cancer ◽  
Relaxation Time ◽  
Magnetic Resonance ◽  
Contrast Agent ◽  
Inductively Coupled Plasma ◽  
Spin Echo ◽  
Resonance Imaging ◽  
Nude Mouse Model

We characterized in vivo a functional superparamagnetic iron-oxide magnetic resonance contrast agent that shortens the T2 relaxation time in magnetic resonance imaging (MRI) of prostate cancer xenografts. The agent was developed by conjugating Molday ION™ carboxyl-6 (MIC6), with a deimmunized mouse monoclonal antibody (muJ591) targeting prostate-specific membrane antigen (PSMA). This functional contrast agent could be used as a noninvasive method to detect prostate cancer cells that are PSMA positive and more readily differentiate them from surrounding tissues for treatment. The functional contrast agent was injected intravenously into mice and its effect was compared to both MIC6 (without conjugated antibody) and phosphate-buffered saline (PBS) injection controls. MR imaging was performed on a clinical 3T MRI scanner using a multiecho spin echo (MESE) sequence to obtain T2 relaxation time values. Inductively coupled plasma atomic emission spectroscopy was used to confirm an increase in elemental iron in injected mice tumours relative to controls. Histological examination of H&E stained tissues showed normal morphology of the tissues collected.

23Na-magnetic resonance imaging of the human lumbar vertebral discs: in vivo measurements at 3.0 T in healthy volunteers and patients with low back pain

2014 ◽  
Vol 14 (7) ◽  
pp. 1343-1350 ◽  
Author(s):  
Stefan Haneder ◽  
Melissa M.L. Ong ◽  
Johannes M. Budjan ◽  
René Schmidt ◽  
Simon Konstandin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Low Back Pain ◽  
Back Pain ◽  
Magnetic Resonance ◽  
Healthy Volunteers ◽  
Low Back ◽  
Resonance Imaging ◽  
3.0 T ◽  
23Na Magnetic Resonance Imaging

Monitoring stem cell migration in the nervous system by in vivo magnetic resonance imaging

2005 ◽  
Vol 25 (1_suppl) ◽  
pp. S692-S692
Author(s):  
Mathias Hoehn ◽  
Uwe Himmelreich ◽  
Ralph Weber ◽  
Pedro Ramos-Cabrer ◽  
Susanne Wegener ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Nervous System ◽  
Stem Cell ◽  
Cell Migration ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Stem Cell Migration
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