995 / 1363
Measure
Sequence(s)
Mask Air
Result
Bone Surface Distance
between CT and sCT
PETRA
N/A
1.34 mm
UTE (4ms & 40µs)
N/A
1.89 mm
Mean HU error between
CT and sCT
PETRA
Not Masked
-0.01 ± 22.84
UTE (4ms & 40µs)
1.52 ± 39.13
T2 and PETRA
-0.26 ± 18.86
PETRA
Masked
15.59 ± 180.71
UTE (4ms & 40µs)
102.35 ± 332.48
T2 and PETRA
-12.63 ± 101.77
Results
HU generation from a single 3-class sequence (bone,
air, soft-tissue) versus 4-class (bone, air, fat, muscle)