MRI Chemical Shift Artifact Calculations

This video covers how to calculate the pixel shift and anatomic shift caused by the precessional frequency differences between fat and water molecules in MRI.

[@kenyonosborne2246]

You are a legend thank you

[@janarthanam3093]

👍❤️ Thanks Sir

[@no-de3lg]

What controls the number of pixels in frequency direction?

[@JCruiseII]

The matrix is the number of pixels. If you have a 256x256 matrix, you have 256 pixels in both directions.

[@no-de3lg]

Please explain to me First pixel in the far left experience 1.5 Tesla Plus a .01 Tesla so it experienced as example a 65mhz and next pixel closer to iso is 64mhz does that mean pixel 2 has ranges of frequencies from 64mhz until 64.999mhz ? And if additional .1hz can make the signal be registered to the neighboring pixel please could u explain to me im struggling

[@JCruiseII]

There are several things you are combining here. You are talking about bandwidth, matrix size and magnet strength. You first have to separate them out, so you don't get confused. Pixels will have a number of frequencies within each one based on your bandwidth. I can elaborate, if needed.