Detail publikace

Evaluation of a Novel Maghemite Hybrid Nanocarrier for MR Imaging (Pilot Study).

Originální název

Evaluation of a Novel Maghemite Hybrid Nanocarrier for MR Imaging (Pilot Study).

Anglický název

Evaluation of a Novel Maghemite Hybrid Nanocarrier for MR Imaging (Pilot Study).

Jazyk

en

Originální abstrakt

The aim of this study was to investigate Mag 102-6, a maghemite hybrid drug nanocarrier, as a potential T2 contrast agent (CA) for magnetic resonance imaging (MRI). Samples of agar gel mixed with different Fe concentrations of Mag 102-6 were measured at laboratory temperature for relaxivity r2 determination in 9.4 T. The results were compared with commercial CA FeraSpin XXL measured in the same arrangement. In addition, the r2 of Mag 102-6 in saline solution at physiological temperature 37.7°C was measured. MRI was performed with four mice using a 9.4T NMR scanner before, and up to 24 h post-injection (p.i.) of Mag 102-6 (dose 5 mg Fe kg-1). Images of abdomen were continuously acquired by segmented Multi Gradient Echo (MGE) pulse sequence from 1 minute before the CA application to 20 minutes p.i. The T1-weighted (T1-w) and T2-weighted (T2-w) images were captured before the application and 25 minutes, 3.5, 7 and 24 hours after CA application. R2* changes in time were estimated from MGE images for various anatomical regions (kidney, muscles, liver) by fitting of signal intensities. Mag 102-6 and FeraSpin XXL had comparable r2 values. Mag 102-6 showed the potential to be monitored by MRI as a T2 CA.

Anglický abstrakt

The aim of this study was to investigate Mag 102-6, a maghemite hybrid drug nanocarrier, as a potential T2 contrast agent (CA) for magnetic resonance imaging (MRI). Samples of agar gel mixed with different Fe concentrations of Mag 102-6 were measured at laboratory temperature for relaxivity r2 determination in 9.4 T. The results were compared with commercial CA FeraSpin XXL measured in the same arrangement. In addition, the r2 of Mag 102-6 in saline solution at physiological temperature 37.7°C was measured. MRI was performed with four mice using a 9.4T NMR scanner before, and up to 24 h post-injection (p.i.) of Mag 102-6 (dose 5 mg Fe kg-1). Images of abdomen were continuously acquired by segmented Multi Gradient Echo (MGE) pulse sequence from 1 minute before the CA application to 20 minutes p.i. The T1-weighted (T1-w) and T2-weighted (T2-w) images were captured before the application and 25 minutes, 3.5, 7 and 24 hours after CA application. R2* changes in time were estimated from MGE images for various anatomical regions (kidney, muscles, liver) by fitting of signal intensities. Mag 102-6 and FeraSpin XXL had comparable r2 values. Mag 102-6 showed the potential to be monitored by MRI as a T2 CA.

BibTex


@inproceedings{BUT120001,
  author="Aneta {Malá} and Aristides {Bakandritsos} and Ondřej {Macíček} and Elias {Rousalis} and Eva {Dražanová} and Radovan {Jiřík} and Lenka {Dvořáková} and Lucie {Krátká} and Zenon {Starčuk}",
  title="Evaluation of a Novel Maghemite Hybrid Nanocarrier for MR Imaging (Pilot Study).",
  annote="The aim of this study was to investigate Mag 102-6, a maghemite hybrid drug
nanocarrier, as a potential T2 contrast agent (CA) for magnetic resonance imaging (MRI).
Samples of agar gel mixed with different Fe concentrations of Mag 102-6 were measured at
laboratory temperature for relaxivity r2 determination in 9.4 T. The results were compared
with commercial CA FeraSpin XXL measured in the same arrangement. In addition, the r2 of
Mag 102-6 in saline solution at physiological temperature 37.7°C was measured. MRI was
performed with four mice using a 9.4T NMR scanner before, and up to 24 h post-injection
(p.i.) of Mag 102-6 (dose 5 mg Fe kg-1). Images of abdomen were continuously acquired by
segmented Multi Gradient Echo (MGE) pulse sequence from 1 minute before the CA
application to 20 minutes p.i. The T1-weighted (T1-w) and T2-weighted (T2-w) images were
captured before the application and 25 minutes, 3.5, 7 and 24 hours after CA application. R2*
changes in time were estimated from MGE images for various anatomical regions (kidney,
muscles, liver) by fitting of signal intensities. Mag 102-6 and FeraSpin XXL had comparable
r2 values. Mag 102-6 showed the potential to be monitored by MRI as a T2 CA.",
  booktitle="Measurement 2015. Proceedings of the 10th Internacional Conference on Measurement",
  chapter="120001",
  howpublished="print",
  year="2015",
  month="may",
  pages="121--124",
  type="conference paper"
}