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Unformatted text preview: • Need to ensure that you are at the right spot in k-space before data acquisition begins k(t) = γ∫ t G (t’) dt’ The slice select, frequency encode or phase encode gradients maybe in any physical direction or combination there of In general The above equation helps you determine where you are (or where you should be ) in k-space for the desired data acquisition scheme. Effect of 180 pulse K-space traversal Consider frequency encoding gradient only for now K-space traversal Consider here frequency encoding gradient in 2 directions K-space traversal How does the k-space trajectory look like for these two sequences?...
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