Image acquisition rate

Disadvantages of the technique include 1) Image-acquisition rates. Increasing the acquisition rate by hmiting the microscopic field of study, often sacrifices other important data, 2) The depth of imaging. Al-... 

This experimental technique also allows the deposit growth to be characterized versus time by applying the method presented above for successive images and thus the cake growth kinetics to be obtained. The image acquisition rate is chosen by the operator (down to a few images per second) so that this measurement technique could be used for various membrane fouling kinetics. 

In a MBCM the image acquisition rate is limited by the speed of the camera readout. In the CSU-10 version of the Yokogawa scanhead the rotation frequency of the disc was limiting the acquisition rate to 360 Hz, which is no longer the case for the CSU-21 that can rotate with higher speeds. 

Fig. 38. Line excitation SEMI-RARE images of two-phase flow in a ceramic monolith rated at 200 cpsi. The signal intensity shows how far the initially excited water molecules have traveled in the period between line excitation and the image acquisition. The gas flow rate was (a) 0, (b) 100, (c) 200, and (d) iOOcin inin. Images acquired 78ms after r.f. excitation are shown. A 5mm-high slice of spins was initially excited along the direction of flow. The fleld-of-view is 50 mm (x) x 25 mm (z).

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