PROTOCOLS
A Check the clinical indication and choose the correct protocol
B Read any scanning notes to ensure correct positioning and orientation
C Perform the sequences in the order indicated - this is important to ensure a diagnosis in the event the scan is abandoned
Protocols are available for
• FAI (Femoroacetabular impingement) & Routine indications in patients 65 y/o and under
• Routine indications in patients over 65
• Hemipelvis protocol - wider FOV
• Hip arthrogram
• Hip implant (MARS)
• AVN
• Post DDH reduction
• SUFE
IMPORTANT SCANNING NOTES
• FSPD (fat saturated proton density) requires a TE of greater than 40ms **
• Slice thickness 3mm or better FOV 12-14cm unless otherwise stated
• Include the hamstring attachments in coronal and axial planes
• If referrer requests 'Pelvis' but symptoms are limitied to one side use the protocol for one hip
FAI & Routine indications in patients 65 y/o and under
• Coronal STIR pelvis - then other sequences dedicated to the affected hip joint
• Axial FST2 aligned along femoral neck
• Coronal FSPD
• Sagittal FSPD angled to the acetabular rim in both the axial and coronal planes (see image 1 & 2)
• Radial FSPD - from centre of femoral head selected at the acetabular rim image from sagittals (see image 3)
• Coronal T1
• Using integrated body coil- Few axial T1 slices each through femoral neck & distal femur (condyles) for torsion
Routine indications in patients over 65
• Coronal STIR pelvis - then other sequences dedicated to the affected hip joint
• Coronal FSPD
• Sagittal FSPD
• Axial FSPD
• Axial FST2 aligned along femoral neck
• Coronal T1
Hemipelvis protocol - wider FOV
• Coronal STIR pelvis - then other sequences dedicated to the affected hemipelvis
• Coronal FSPD - FOV from top of iliac blade to lesser trochanter
• Sagittal FSPD - same FOV
• Axial FSPD - same FOV
• Coronal T1 - same FOV
Pelvis protocol - widest FOV
• Coronal STIR pelvis - FOV from top of iliac blade to lesser trochanter
• Coronal T1
• Axial FSPD
• Coronal T1
Hip arthrogram
Hip in 15 degrees internal rotation. Use traction.
• Coronal FSPD
• Coronal FST1
• Sagittal FSPD
• Axial FSPD
• Axial T1 align along femoral neck
Hip implant (MARS)
• Coronal STIR
• Coronal T1
• Axial STIR
• Axial T1
• Sagittal T2
AVN
• Routine protocol but add Cor T1 of pelvis
Post DDH reduction
GA not needed
Perform after a feed
• Axial T2
SUFE
• Coronal FSPD
• Axial FSPD
• Axial T2 along femoral neck both sides
