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3 T vs Lower Field Strength MRI |
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Monday, 20 July 2009 11:21 |
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Fundamentally, 3T MR imaging offers twice the signal of 1.5T. Specific absorption rate considerations are becoming less of a limitation due to technical advances and surface coils that are available for all core applications. The greater amount of signal can be manipulated to make scanning more comfortable (scan times that may be half as long) or more sensitive (higher resolution) to smaller lesions (eg, small and early multiple sclerosis plaques). Typical utilization combines both benefits in a given scan. The greater sensitivity to magnetic susceptibility effects offers unique benefits in functional neuroimaging as well as improving sensitivity to brain hemorrhage. Practical considerations make studies of the brain, spine, chest, abdomen, pelvis, as well as the vasculature and extremities obtained at 3T consistently higher in quality than those obtained at 1.5T.
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Last Updated on Monday, 20 July 2009 11:51 |
