Fig. 2

Cervical MRI for patient 1 with In-Phase sequence (IP) (a) and Out-Of-Phase sequence (OOP) (b) showing drop of signal intensities. Cervical MRI for patient 1 shows lipid-rich thyroid gland. In-Phase sequence (IP) (a) demonstrates an intermediate signal (arrow). Out-of-phase sequence (b), thyroid gland shows a reduction of signal intensity (arrow), indicating that the gland is most likely infiltrated by lipids. This signal intensity difference is related to difference between water and fat protons resonance frequencies