since the eye is particularly susceptible to temperature elevations because of its relatively poor blood supply , the authors measured corneal temperatures in 33 patients immediately before and after mr imaging performed with a 1.5-t ( 64-mhz ) imager and a transmit/receive head coil at estimated peak specific absorption rates ( sar ) ranging from 2.54 to 3.05 w/kg .
C0015392
eye
C0018670
head