Patient Position

• Supine to mild RPO (keep arm/humerus at approx. mid-coronal plane of body)
• Affected arm by side of body with palm of hand facing up (shoulder externally rotated)
• Contralateral arm raised above head

Scan Parameters

• SFOV: Large
• kV: 140
• mAs: 200

Reconstruct

• 1.25/0.62 mm Bone
• 2/2 mm Soft Tissue

Axial Reformats

• Perpendicular to humeral diaphysis
• 0.8/1.5 mm Bone

Coronal Reformats

• Prescribe coronal plane off of axial image parallel to supraspinatus muscle.
• 0.8/1.5 mm Bone

Patient Position

• Supine
• Affected arm raised above head
• Elbow extended (if possible), palm up (if possible)
• Try to position elbow close to the table's center
• Contralateral arm down by the side

Scan Parameters

• SFOV: Small
• kV: 120
• mAs: 150

Reconstruct

• 0.625/0.3 mm Bone
• 2/2 mm Soft Tissue

Straight Elbow -- Axial Reformats

• Parallel to line from capitulum to trochlea (distal humerus)
• 0.8/1.5 mm Bone

Straight Elbow -- Coronal Reformats

• Prescribe coronal plane off of axial image at level of epicondyles, parallel to inter-epicondylar line
• Orient so humerus is up and forearm is down
• 0.8/1.5 mm Bone

Bent Elbow -- Axial Reformats

• Prescribe axial planes off of a sagittal image;
  • Perpendicular to forearm
  • Perpendicular to humerus
• 0.8/1.5 mm Bone

Bent Elbow -- Forearm Coronal Reformats

• Prescribe coronal planes off of sagittal images;
  • Perpendicular to radius
  • Perpendicular to ulna
• Orient so humerus is up and forearm is down
• 0.8/1.5 mm Bone

Patient Position

• Prone
• Affected arm over head ("Mighty Mouse" position)
• Arm as straight as possible; palm facing down; wrist centered in gantry
• Contralateral arm by head or at the side

Scan Parameters

• SFOV: Small
• kV: 120
• mAs: 150

Reconstruct

• 0.625/0.3 mm Bone
• 2/2 mm Soft Tissue

Axial Reformats

• Parallel to distal radius
• 0.8/1.5 mm Bone

Coronal Reformats

• Prescribe coronal plane off of axial image parallel to line drawn from ulnar styloid to radial styloid.
• Orient so that hand is up and forearm is down
• 0.8/1.5 mm Bone

Patient Position

• Supine
• Feet together, centered in scanner; toes pointing straight up; in most cases scan both feet together
• Use foot holder, if available

If feet cannot be brought together or the contralateral ankle/foot has hardware, then position the ankle/foot of interest centered in the scanner and the contralateral knee bent with ankle/foot out of the way

Scan Parameters

• SFOV: Small
• kV: 120
• mAs: 150

Reconstruct

• 0.625/0.3 mm Bone
• 2/2 mm Soft Tissue

Ankle/Hindfoot -- Axial Reformats

• Parallel to long axis of calcaneus
• Orient so toes are up and heel is down
• 0.8/1.5 mm Bone

Ankle/Hindfoot -- Coronal Reformats

• Prescribe coronal plane off of axial image at level of distal tib-fib joint, bisecting the tibia and fibula
• Orient so shin is up and foot is down
• 0.8/1.5 mm Bone

Foot/Forefoot -- Axial Reformats

• Prescribe axial plane off of a sagittal image showing most of first MT, parallel to first MT
• Orient so toes are up and heel is down
• 0.8/1.5 mm Bone

Foot/Forefoot -- Sagittal Reformats

• Prescribe sagittal plane off of a reformatted axial image showing entire first MT, parallel to first MT
• Orient so dorsum of foot is up and plantar surface is down
• 0.8/1.5 mm Bone