Mid-Sagittal MRI of the Lumbar Spine. Left (T1-weighted image); Right (T2-weighted image). On this view centered over the lumbar spine, one can see all five lumbar vertebrae in addition to the sacrum ...

Fourier transformation is used to convert the frequency information contained in the signal from each location in the imaged plane to corresponding ... by two different relaxation times – T1 and T2.