Distortion using a semiquantitative scale
| Scale (0–4) | |
|---|---|
| 4 | Perfect contour continuation, preserving the contrast of both white and gray matter; convexity (of the cerebrum and cerebellum) is almost the same as that of T2-weighted image |
| 3 | Good contour continuation, preserving the contrast of both white and gray matter; convexity (of the cerebrum and cerebellum) is preserved but is less pronounced compared with that of T2-weighted image |
| 2 | Poor contour continuation; discontinuity can be seen in some parts; convexity is lost |
| 1 | Contour continuation is lost; concave contour is observed |
| 0 | Very concave (opposite of the natural convexity of cerebrum and cerebellum), with significant distortion |