In-room imaging and MR planning

Results

Measure

Sequence(s)

Mask Air

Result

PETRA

N/A

1.34 mm

Bone Surface Distance between CT and sCT

UTE (4ms & 40µs)

N/A

1.89 mm

PETRA

-0.01 ± 22.84

Not Masked

UTE (4ms & 40µs)

1.52 ± 39.13

Mean HU error between CT and sCT

T2 and PETRA

-0.26 ± 18.86

PETRA

15.59 ± 180.71

Masked

UTE (4ms & 40µs)

102.35 ± 332.48

T2 and PETRA

-12.63 ± 101.77

HU generation from a single 3-class sequence (bone, air, soft-tissue) versus 4-class (bone, air, fat, muscle)