Fast Imaging

Ultrasonic Testing of Concrete with Fast Imaging Pulse-Echo-Technique. 

More Advanced Techniques II Fast Imaging Techniques... 

Phase encoding of higher order terms (locally time dependent accelerations) is feasible in principle with pulse trains such as the example shown in Figure 2.9.4(d). However, the relatively long acquisition times of NMR parameter maps conflict with snapshot records that would be needed for such maps. In any case, in Ref. [27] fast imaging techniques are described and discussed that could be employed for moderate versions of snapshot experiments. 

B. Chance, E. Anday, S. Nioka, S. Zhou, L. Hong, K. Worden, C. Li, T. Murray, Y. Ovetsky, D. Pidikiti, and R. Thomas. A novel method for fast imaging of brain function, non-invasively, with light. Optical Express, 2(10) 411-423, 1998. 

Even with the application of the above mentioned fast imaging techniques, the spatial resolution is still limited by the minimum S/N which can be achieved in the time reserved for the spectroscopic examination. We feel that with the currently available instrumentation the maximum resolution should be around 0.6 cm3. Representative spectra obtained with this resolution at 3 T magnetic field strength... 

---