Table 2 Mean and standard deviation of the kernel inception distance (KID) and structural similarity index measure (SSIM) for each class: healthy controls (HC) and alzheimer’s disease (AD). The range of each metric is indicated in the table header. The symbol \(\:\uparrow\:\) means that a higher value indicates greater similarity, while \(\:\downarrow\:\) denotes the opposite. The KID was computed using batches of 50 images from the same class, while the SSIM was calculated between 1000 couples of images from the same class. Supplementary methods contain image data IDs for real images involved in the computation, and synthetic images are available in the supplementary material as a NIfTI file.
From: High-resolution conditional MR image synthesis through the PACGAN framework
HC | AD | |||
|---|---|---|---|---|
KID \(\:\downarrow\:\) | SSIM \(\:\uparrow\:\) | KID \(\:\downarrow\:\) | SSIM \(\:\uparrow\:\) | |
\(\:[0,{\infty\:})\) | \(\:[0,1]\) | \(\:[0,{\infty\:})\) | \(\:[0,1]\) | |
Real/fake | 0.050 \(\:\pm\:\) 0.004 | 0.598 \(\:\pm\:\) 0.036 | 0.059 \(\:\pm\:\) 0.005 | 0.606 \(\:\pm\:\) 0.037 |
Real/real | 0.000 \(\:\pm\:\) 0.001 | 0.605 \(\:\pm\:\) 0.055 | 0.000 \(\:\pm\:\) 0.001 | 0.618 \(\:\pm\:\) 0.074 |
Fake/fake | 0.000 \(\:\pm\:\) 0.001 | 0.612 \(\:\pm\:\) 0.049 | 0.000 \(\:\pm\:\) 0.001 | 0.629 \(\:\pm\:\) 0.061 |
