Figure 2
From: Amide Proton Transfer-weighted MRI in the Diagnosis of Major Salivary Gland Tumors
Squamous cell carcinoma of a 55-year-old male. (A) Axial T2-weighted imaging with fat suppression shows an irregular mass with infiltrative margin and heterogeneous signal intensities in the left parotid gland (arrows). (B) Tumor shows heterogeneous signal on amide proton transfer-weighted (APTw)-MRI (arrows). Note the markedly increased asymmetry value at the solid portion of the tumor. The averaged APTw-signal values from the two readers were as follows: Mean APTw-signal, 2.44%; maximum APTw-signal, 10.22%; median APTw-signal, −2.53%.
