M Beerens

WSL ASSESSED ON CLINICAL PHOTOGRAPHY AND BY QLF 2 33 In the visual transitions scores (VT), 268 improved, 109 lesions remained the same and 52 lesions worsened. According to QLF 534 surfaces were sound (score 0) at T1, which related to an integrated fluorescence loss (IFL) of 0 %.mm 2 , while 247 lesions had IFL of > 0 and ≤ 5 %.mm 2 and were given score 1, 103 were given score 2 (IFL > 5 to ≤ 25 %.mm 2 ). A total of 34 lesions were given score 3 (IFL >25 %.mm 2 ). Figure 2 shows a scatter plot of the changes in integrated fluorescence loss for individual lesions from T1 to T2. 0 25 50 75 100 125 150 175 0 25 50 75 100 125 150 175 Integrated Fluorescence Loss [%.mm2] at T2 Integrated Fluorescence Loss [%.mm2] at T1 0 25 0 5 10 15 20 25 30 IFL [%.mm2] at T2 IFL [%.mm2] at T1 Figure 2. Scatter plot showing the IFL determined by QLF for the individual lesions/ surfaces at T1 on the x-axis and T2 on the y-axis.