MRI from A to Z: A Definitive Guide for Medical by Gary Liney

By Gary Liney

This moment version of Gary Liney’s MRI from A-Z, a lot multiplied from the 1st version, is either a mirrored image of and an apt better half for the dramatic development within the box of MRI. The MRI trainee and the commonly skilled MRI practitioner alike will locate this A-Z of the sector, with 1,300 entries and a hundred illustrations, to be an critical reference tool.

Providing the reader with concise, transparent and eloquent definitions of MRI terminology, this e-book is either hugely sensible and a excitement to read.

Gary Liney, PhD is the crucial Physicist for Oncology Imaging and Radiotherapy Physics on the Queen’s Centre for Oncology, fortress Hill medical institution, Cottingham, united kingdom.

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Complexity A measure used to describe the irregularity of a region-ofinterest. It is defined as the square of the perimeter divided by the surface area, with a circle being equal to 4p. See also morphological descriptors. Composite pulses A series of RF pulses that are concatenated to improve their overall utilization. A common example is a binomial pulse. Conjugate symmetry The property of k-space which means that the data values on one side of k-space are identical to the values at their mirrored location through the origin: S (k PE , k FE ) = S* (− k PE , − k FE ) This permits the interpolation of missing data points when only part of k-space data is acquired (see partial Fourier, partial echo).

Chemical shift (“of the second kind”) 49 Figure 9 Dark and bright signal can be seen on opposite sides of the vertebra and kidney characteristic of chemical shift artifact. Frequency direction is top to bottom. Liney G. MRI in clinical practice. London: Springer; 2006, p. 47 It is also used to describe multi-voxel spectroscopy techniques, the spectra from which may be turned into a low resolution image based on chemical shift, although this is increasingly referred to as MR Spectroscopic Imaging or MRSI.

Bore 35 Figure 7 Bone imaging. 0 T with 180 mm ­in-plane resolution See also statistical errors References Everitt BS. Medical statistics from A to Z. Cambridge: Cambridge University Press; 2003. ISBN: 0521532043 Bore Referring to the overall dimension of the enclosed space within the MR scanner. More specifically this is termed the patient bore, to distinguish the bore width of the final system from the diameter of the main windings which are around 1 m. Traditionally, higher fields have meant an increased length and reduced diameter bore.

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