By Tommaso Scarabino, Saverio Pollice, Teresa Popolizio
This richly illustrated e-book summarizes the state-of-the-art in mind MRI with the 3-Tesla high-field scanner. the purpose is to elucidate the varied merits of utilizing a 3-T excessive magnetic box MR scanner, particularly when it comes to sensitivity and specificity. the 1st part describes recommendations for normal MR exam of the mind. complete descriptions are then supplied of complex protocols similar to MR angiography, diffusion-weighted imaging (DWI), perfusion-weighted imaging (PWI), MR spectroscopy, MR tractography, and useful imaging. ameliorations in diagnostic gains whilst acting those examinations at three T and at 1.5 T are highlighted. furthermore, issues of safety when it comes to the deploy and use of a high-field scanner are mentioned. the second one part then describes and illustrates intimately all of the major scientific functions of 3-T MRI within the human mind: trauma, stroke, white subject illness, Parkinson’s ailment, Alzheimer’s ailment, mind tumors, inflammatory illness, psychiatric problems, and so forth. a last bankruptcy is devoted to the overview of 7-T MRI inside either study and strength scientific settings. The publication could be a necessary instrument for common radiologists, neuroradiologists, trainees, and technicians.
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Additional info for High Field Brain MRI: Use in Clinical Practice
The higher the field strength, the more energy patients absorb with excessive heating of the patient. In fact SENSE can also decrease the number of echoes in TSE sequences at a given spatial resolution and thus reduce the specific absorption rate. Acceleration factors of up to six are feasible because of the intrinsically high SNR obtained at 3 T . The combination of SENSE with 3 T makes an ideal partnership for optimized high- field MR protocols . The shorter examination time obtained with parallel imaging is therefore useful for claustrophobic patients and patients who find it difficult to remain still.
Lastly, the higher SNR of high-field MR systems is a resource that the neuroradiologist can exploit in clinical practice, since the higher the SNR, the greater the scope for adjusting protocols. Moreover 3-T intraoperative MRI (iMRI) is likely to become the standard of care for a wide range of neurosurgical procedures because it offers a superior visualization of soft tissue and clear delineation of any residual tumour tissue and advantages like brain activation studies and complex vascular imaging that are unavailable with low- and midfield iMRI systems .
Scarabino et al. 1007/978-3-319-44174-0_5 47 T. Scarabino et al. 48 a b Fig. 0 T MR Angiography 49 in T1 relaxation between blood and surrounding tissue . As a result, problems associated with slow flow and turbulence-induced signal voids are overcome. The technique allows a small number of slices oriented in the plane of the vessels of interest to image an extensive region of vascular anatomy in a short period of time . With this technique, a temporal resolution of about one image in 20 s has become possible, enabling selective demonstration of the early arterial and late venous phase [5–7].