Fig. 21.1 An example of 3D reconstruction. Activation maps are superimposed on the high-quality volumetric acquisition, giving a better opportunity to localize eloquent areas. MPR projections are also shown 21.7…
Fig. 10.1 Arterial spin labeling basic principle. The magnetization of water protons is inverted within a thick slab covering feeding arteries at the base of the head. After a time…
Fig. 14.1 SE T1: comparison between images acquired in the same patient at 3.0 T (Allegra, Siemens) (a left) and 1.5 T (Vision, Siemens) (b right). The thin extra-axial right…
is the ratio of induced magnetization to the source field and μ 0 is the magnetic permeability in vacuum. Although the distinction between source and induced magnetic field tends to…
Fig. 15.1 Small hyperacute stroke. The standard MR study (T2 FSE) is negative (a). The DWI image shows a hyperintense left subcortical parietal ischaemic focus (b) Also in MR studies,…
Fig. 23.1 The evolution of MR images over time. In 1974, the first image of a small animal was obtained by Lauterbur using a technique called zeugmatography at that time….
Fig. 17.1 Representation of anatomical and functional changes occurring in patients with PD. Alterations are observed at three levels: I mesencephalic (EPI diffusion-weighted image), II basal ganglia (spin-echo T2-weighted image)…
Fig. 18.1 Biomarker model for AD (Adapted from http://adni.loni.usc.edu/study-design/background-rationale/). Abbreviations – PET positron emission tomography, CSF cerebrospinal fluid, MRI magnetic resonance imaging, FDG 18F-2-fluoro-2-deoxy-D-glucose, MCI mild cognitive impairment To date,…
Fig. 11.1 Schematic view of the events occurring in the genesis of BOLD signal. Explanations in the text Neuronal firing gives also rise to synaptic activity, and, during synaptic activity,…
and Alessandra Iannelli1 (1) Health Physics Department, “IRCCS Casa Sollievo della Sofferenza”, Viale Cappuccini, 71013 San Giovanni Rotondo, (Fg), Italy High-field magnetic resonance (MR), originally developed in the framework of spectroscopy…
