wizyta

od 2020-09-20

Title: The magnet system for rapid scan electron paramagnetic resonance imaging and spectroscopy

Source: Concepts in Magnetic Resonance Part B - Magnetic Resonance Engineering

Year : 2013

Abstract:

The magnet and gradient systems suitable for electron paramagnetic resonance imaging experiments at RF range are presented. The air-core magnet based on the Helmholtz design in the article has a unique conical shape. A comprehensive study regarding the coils adjustment providing for the maximum field homogeneity is given. The z gradient is a four-coil system (seventh order), the transverse gradients are Golay coils (fifth order), and the scan system is the Helmholtz coil (fourth order). The magnet generates continuously a field of 37 mT (370 G), and the orthogonal gradient coils are designed to yield 100 mT/m (10 G/cm). The experimental tests have shown that the field generated is homogeneous to ± 10 ppm in the 6 x 6 x 3 cm3 region (x/y/z), which is our field of interest, and to ± 50 ppm in the 8 x 8 x 4 cm3 region (x/y/z). The system has the potential to monitor temporal changes of oxygen concentration in biological samples.
(c) 2013 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 43B:2231, 2013

DOI: 10.1002/cmr.b.21228   (Pobrane:  2020-10-25)