Standard Thumb Views Flashcards
PA Thumb: SID
40”
PA Thumb: Tube Tilt
None
PA Thumb: Image Receptor Size
-Film: 1/3 of a 10 x 12” film divided crosswise in landscape orientation
-Digital: Smallest image receptor available (8 x 10” or 10 x 12”) in portrait orientation
PA Thumb: Patient Positioning
-Patient is seated at a table with hand placed in pronation and the 1st digit placed with dorsal side down.
-Digits 2-5 are extended and stacked on one another perpendicular to the image receptor w/ forearm resting on the table.
PA Thumb: Central Ray Position
Through the 1st metacarpophalangeal joint
PA Thumb: Collimation
To 1/3 of the image receptor (film) or the size of the thumb, including all the fingertip and the carpometacarpal joint (digital)
Lateral Oblique Thumb: SID
40”
Lateral Oblique Thumb: Image Receptor Size
-Film: 1/3 of 10 x 12” film divided crosswise in landscape orientation
-Digital: 8 x 10” or 10 x 12” in portrait orientation
Lateral Oblique Thumb: Patient Positioning
Patient is seated with affected hand placed palmar side down, with digits 2-5 ulnar deviated away from the thumb at the metacarpophalangeal joints.
-Nail bed will lie at an angle approximately 45 degrees to the image receptor.
Lateral Oblique Thumb: Central Ray Position
Through the 1st metacarpophalangeal joint
Lateral Oblique Thumb: Collimation
To 1/3 of the image receptor or side of the thumb including all fingertip and the carpometacarpal joint
Lateral Thumb: SID
40”
Lateral Thumb: Tube Tilt
None
Lateral Thumb: Image Receptor Size
-Film: 1/3 of 10 x 12” film, divided crosswise in landscape orientation
-Digital: 8 x 10” or 10 x 12”, in portrait orientation
Lateral Thumb: Patient Positioning
Patient is seated at a table with affected hand placed palmar side down with the lateral aspect of the thumb against the image receptor
-Digits 2-5 are flexed at the metacarpophalangeal joint
