Question | Answer |
Should screens or grids be used on an ankle projection? | screens - regular; no grid |
What should the SID be for an ankle? | 40 inches |
How should ankle projections be collimated? | to include base of 5th metatarsal |
What are the routine ankle projections? supplementary? | routine -> AP, medial oblique - mortise, lateral; supplementary -> 45 degree oblique (routine for trauma) |
What sizes of film s/b used for AP ankle? | 1) 11 x 14 divided transversely into thirds; 2) 10 x 12 divided transversely in half; 3) 8 x 10 |
What is the patient position for AP ankle? | patient in supine position (pillow under head), legs fully extended, foot dorsiflexed 90 deg, plantar surface perpendicular to film |
How should the tube be angled and what position should the CR be in for AP ankle? | tube should be angled perpendicular to film; central ray perpendicular through ankle joint, midway between the malleoli |
What is the patient position for AP oblique projction - ankle - w/medial rotation? | patient in supine position (pillow under head); legs fully extended w/good dorsiflexion; plantar surface perpendicular to film; medially rotate so that malleoli are paralell to the film (15 - 20 deg) |
What film size s/b used with medial oblique ankle? | 1/2 of 10 x 12 |
What is the tube angulation and CR position for medial oblique ankle? | tube angle s/b perpendicular to film; central ray through the ankle joint (midway between malleoli) |
What is another name for the medial oblique ankle? | AP Mortise projection |