4 |
Excellent: Perfectly demarcated contour and very good contrast with
surrounding structure |
3 |
Good: Almost good contour, but partially (<50%) mixed
with the background |
2 |
Fair: Organ/node can be discriminated from surrounding structures,
while more than half of the contour is mixed with the
background |
1 |
Faint: Structures of organ/nodes are ill-defined, but can be
identified by faint contrast with surrounding structures |
0 |
Unidentifiable: Cannot identify any structures |
Scales for geometric distortion |
Scales for geometric
distortion |
4 |
High geometric accuracy and almost no distortion |
3 |
Faint distortion: Organ/node slightly tilts, but its convexity is
almost the same as that of T2-weighted turbo spin-echo sequence (TSE)
image |
2 |
Moderate distortion: Convexity is less pronounced or lost compared
to that of a T2-weighted TSE image |
1 |
Intense distortion: Convexity is opposite compared to that of a
T2-weighted TSE image, or severe dislocation exists |
0 |
Impossible to evaluate, or unidentifiable |