Sequence and Contrast Audit

Voxel Signal Map Uses Cited Relaxation Rows

A displayed contrast map is accepted only from cited voxel signal rows. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Voxel A cites recovery and echo rows

Voxel A has density 12, recovery fraction 1/2, echo fraction 5/6, and final signal 5.

12⋅12⋅56=512\cdot\frac{1}{2}\cdot\frac{5}{6}=5
MRI contrast signalA voxel signal is the product of cited density and relaxation factors.signal

The displayed map follows the cited signal rows

Voxel B has signal 6 while voxel A has signal 5, so the accepted ordering is B greater than A.

6>56>5
MRI contrast mapThe displayed voxel ordering is bound to cited signal rows.56B>A