Hand Flashcards
Scaphoid ossification
4-6 years
Bone age scan
left hand PA
FFD: 76cm
Routine hand projections
PA
PA Oblique
PA hand
Position
CR
Angle
Collimation
FFD
kVp
mAs
Patient sitting at end of table parallel to end so
legs not under the table
• Flex elbow at 90o
• Hand and forearm resting on table
• Place palm of hand down on imaging plate and
slightly spread the fingers
• Long axis of third digit should be in line with
forearm and parallel to edge of imaging plate
• Central ray perpendicular to imaging plate
• Center to the 3rd MCP joint
• Collimate on four sides to outer margins of hand
• FFD 110cm
• kVp 45
• mAs 2.5
• Fine focus, no grid
PA Oblique Hand
Position
CR
Angle
Collimation
FFD
kVp
mAs
Patient sitting at end of table parallel to end so
legs not under the table
• Flex elbow at 90o
• Hand and forearm resting on table
• From PA position rotate hand and wrist 45o
so
radial aspect is elevated
• Long axis of third digit should be in line with
forearm and parallel to edge of imaging plate
• Central ray perpendicular to imaging plate
• Center to the 3rd MCP joint
• Collimate on four sides to outer margins of hand
• FFD 110cm
• kVp 45
• mAs 2.5
• Fine focus, no grid
PA hand oblique criteria
Regional anatomy included – tips of digits to distal radius and ulna, including soft tissue • Midshafts of third, fourth and fifth metacarpals should not overlap however some overlap of distal heads • No overlap of distal second and third metacarpals • Density and contrast optimal to visualise bone & soft tissue
Hand Supplementary projections
PA Both hands (metabolic disease and arthritic evaluation)
Lateral
Norgaard
Hand Lateral
Position
CR
Angle
Collimation
FFD
kVp
mAs
Patient sitting at end of table parallel to end so
legs not under the table
• Flex elbow at 90o
• Hand and forearm resting on table
• Hand on side so radial aspect is elevated and
radial and ulna styloid processes are superimposed
• Long axis of hand should be in line with forearm
and parallel to edge of imaging plate
• Central ray perpendicular to imaging plate
• Center to the 2nd MCP joint
• Collimate on four sides to outer margins of hand
• FFD 110cm
• kVp 50
• mAs 4.5
• Fine focus, no grid
Norgaard method
Position
CR
Angle
Collimation
FFD
kVp
mAs
Patient sitting at end of table
• Hands and forearms resting on table
• Supinate hands so palms are up and place medial
aspect of hands together
• Internally rotate hands 45o so radial aspect is
elevated
• Extend fingers and abduct the thumbs
• Long axis of hand should be in line with forearm
and parallel to edge of imaging plate
• Central ray perpendicular to imaging plate
• Center in between hands at level of MCP joints
• Collimate on four sides to outer margins of hand
• FFD 110cm
• kVp 45
• mAs 2.5
• Fine focus, no grid