Figure 1 Plot of R1 (=1/T1) vs pO2 for the BSS phantom at (a) room temperature, 21°C and (b) body temperature 37°C. The slope is used to determine pO2 changes from T1 measurements in the eye. Determination of T1-Dependence on Oxygenation in the Eye Using a Simple Phantom Model Nicholas G Dowell, Edward H Hughes, Andrew Simpson, and Paul S Tofts Brighton and Sussex Medical School, Brighton, United Kingdom, Sussex Eye Hospital, Brighton, United Kingdom