A complete digital magnetic resonance imaging (MRI) system at low magnetic field (0.1 Tesla)

A new complete digital MRI system is developed to enhance the signal-to-noise ratio of the detected nuclear magnetic resonance (NMR) signals at low magnetic field (0.1 Tesla). The system is based on digital signal processor (DSP) that functions also as a controller and as an interface between the frequency translator and the digital synthesiser. The final system should be "portable" functioning at low voltage. It is a low cost system, and it can be dedicated to be used in a medical cabinets for examining small members of the human body. Such a system is also useful for quality control of agricultural and food products. The first results obtained with our system are presented in this paper. This includes NMR signal and images of 64/spl times/64 pixels.