CONSTITUTION: A surface coil 1 as an antenna coil of a so-called MRI apparatus, by which a tomogram image of a human body or the like is obtained using a nuclear magnetic resonance(NMR), consists of a coil 11 and a coil 12. A part of each of the coils is extended in the vertical...
Recently it has been proposed to use an array of surface coils to obtain images with high SNRs =-=[1, 2]-=-. This approach, called “Nuclear Magnetic Resonance (NMR) phased array”, is widely adapted in current MRI technology, and is based on simultaneously acquiring multiple images with...
To improve the application value of surface coil in MRI, the imaging effects of surface coilswith different gauge on standard model was measured, and primarily investigated the problem on how toproperly select surface coil. It is showed that, a set of value for each surface coil can be decide...
Surface coil with reduced specific absorption rate for rat MRI at 7 T Article 08 October 2015 References Gehrig J, Bader R, Zabel H-J, Lorenz WJ (1988) Homogeneous MR imaging with surface coils using pixel orientated T2 determination (Abstr.) Society of Magnetic Resonance in Medicine, Berk...
Theoretical or Mathematical, Experimental/ biomedical MRI coils data acquisition image enhancement nuclear Overhauser effect/ surface-coil-type EPR irradiation coil Overhauser-enhanced MRI electron paramagnetic resonance irradiation double-resonance method free radicals imaging proton NMR images signal enhancement ...
electromagnetic solver Simulia CST, which is used in this work, as described later. The square coil is split and capacitors are inserted into the gaps to homogenize the current, as usual in the designs of MRI coils29. Figure1.b shows a schematic of the CLR array together with geometric ...
aTo achieve a better signal-to-noise ratio (SNR), the surface coils are used, although the RF magnetic field (B1) in the specified imaging region of MRI produced by volume RF coils is much more homogeneous than that produced by surface coils. 要达到更好的信号噪音比 (SNR),表面卷用于,...
ANATOMICALLY CONFORMAL QUADRATURE MRI SURFACE COIL quadrature phase coil in the form of a tube (10) comprising two surface loops of a mirror image of individual coils (20, 30) arranged in such a way that the magnetic field vectors of respective coil loops (20, 30) are substantially perpe.....
G-factor maps were acquired for acceleration factors of R = 2, 3, 4, and 6 in a pig cadaver #1 (68 kg). For both coils, the acceleration was set in the L−R direction. For the mono-surface array, the mean of the g-factor in the heart ROI was evaluated as: 1.03, ...
We demonstrate a method for the fast in vivo quantification of small volumes, down to 25 L, using low-field magnetic resonance imaging (MRI) coils. The coi... T Feuillet,MJ Seurin,O Leveneur,... - 《Laboratory Animals》 被引量: 1发表: 2014年 MRI measurements of 200L intradermal gels...