Low-Field MR Imaging

Due to the recent technical advances in both software and hardware, low-field magnetic resonance imaging (MRI) systems are experiencing a renaissance. In the past, low-field MRI systems performed poorly and were generally underestimated with limited clinical applications. Recently several implementations, which are common with high-field MRI systems, are not only becoming possible with low-field MRI systems but also show unique scientific and economic advantages. In this chapter, we described the physical characteristics of low-field MRI systems and discussed their advantages and potentials, along with their novel clinical applications, including the integrated MR-guided radiotherapy system.