Pulse Sequence Timing Pins TE and Total Time - Biophysical Instrumentation VII: NMR Relaxation and MRI Contrast Step by Step

The pulse sequence accepts only when segment times and echo time close.

The pulse sequence accepts only when segment times and echo time close. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

The pulse sequence is a time ledger

The windows are 1 s, 3 s, 1 s, 3 s, and 2 s.

1+3+1+3+2

Total time and echo time are both pinned

The total sequence time is 10 s. The echo time is the symmetric wait 3 s plus 3 s, so it is 6 s.

3+3=6\ \text{s}