BIOE 415 Lab 11cor - BIOE 415 Lab 11 Section AB3 Michael...

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BIOE 415 Lab 11 Section AB3 Michael Spillone and Andrew Wu Introduction: Methods: All protocols were followed as stated in the online experiments. Results: MRI Encoding V Spatial Resolution: 1. Increasing spatial resolution in the frequency encoding direction does not contribute very much to acquisition time since it only requires a higher sampling rate. From the basic imaging pulse sequence, one can see that increasing the number of frequency encodings has no bearing on the acquisition time Tacq. 2. Gibb’s ringing is a more serious problem in the phase encoding direction because it is more pronounced with fewer k space encoding points. From the basic imaging pulse sequence, we know that we are limited by acquisition time in terms of how many phase encoding points we can create thus the phase encoding direction has more Gibb’s ringing artifact. 3. The SNR per pixel is given by the following three identical equations: From the equations, it is easy to see that as the number of encoding points, N, increases, the SNR decreases. 4.
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BIOE 415 Lab 11cor - BIOE 415 Lab 11 Section AB3 Michael...

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