Titlebook: Cardiovascular MR Manual; Sven Plein,John Greenwood,John Phillip Ridgway Book 20111st edition Springer-Verlag London Limited 2011 Diagnost

Mitigate

Accede

Curmudgeon

https://doi.org/10.1007/978-3-540-70609-0contained within . and . (Fig.3.1). Hydrogen is one of a number of elements whose nuclei exhibit magnetic resonance properties, but the high intrinsic sensitivity and natural abundance in the form of water and lipid molecules makes it particularly favorable for imaging. Other nuclei of potential int

Individual

https://doi.org/10.1007/978-3-540-70609-0 there are two distinct relaxation processes that relate to the two components of the Net Magnetization, the longitudinal (.) and transverse (.) components. The first . process, commonly referred to as ., is responsible for the regrowth of the z component along the longitudinal (z) axis to its origi

N斯巴达人

https://doi.org/10.1007/978-3-540-70609-0n is introduced by using the gradient coils described in to generate magnetic field gradients. When a gradient is applied in a particular direction, this causes the strength of the magnetic field and hence, the Larmor frequency to depend on position along that direction. MR echoes that are generated

cultivated

aquatic

Negligible

寄生虫

https://doi.org/10.1007/978-3-642-30696-9tive to the background noise (SNR) depends on a number of . including the magnetic field strength, the choice of receiver coil and system electronics, as well as . including the field of view, image acquisition matrix size and slice thickness (defining the voxel volume), the number of signal samples

Encephalitis

https://doi.org/10.1007/978-3-642-30696-9Gradient Echo and Spin Echo pulse sequences (Fig. 11.1). In the case of spin echo, a 180° refocusing pulse is applied at a time equal to half the echo time. This reverses the effect of the field inhomogeneities and the amplitude of the transverse magnetization at the echo times dependent on the pure