Toes And Foot

Question 1

Technique for toes

Answer 1

54 kVp at 2 (for just one toe)

Question 2

AP or AP axial for toes

Answer 2

Sole of foot on IR, knee flexed, long axis of foot aligned parallel, foot may be elevated on a 15 degree sponge, toes centered to unmasked portion of the IR

Question 3

AP axial is recommended to

Answer 3

Open joint spaces and reduce foreshortening

Question 4

AP toes: CR

Answer 4

Perpendicular to IR, axial is angle 15 degrees posteriorly, enters at the third MTP joint, collimation Includes distal phalanges to distal portion of adjoining metatarsals and all soft tissues

Question 5

AP toe evaluation

Answer 5

Midshaft concavity equal on both sides, open IP and MTP joints, toes separated, distal ends of metatarsals

Question 6

AP oblique toe position

Answer 6

Knee flexed, sole of foot on IR, leg and foot medically rotated to place plantar surface of foot at 30-45 degree angle, CR perpendicular to 3rd MTP joint,

Question 7

AP oblique toe evaluation

Answer 7

All phalanges, Oblique toes - More soft tissue and greater midshaft concavity on side away from IR, Open IP joint spaces and MTP joints on second to fifth toes (First MTP not always open), Toes separated, Distal ends of metatarsals, Density and contrast adequate to make bony trabeculation and soft tissue visible

Question 8

Lateral first and second toe position

Answer 8

Lateral recumbent on unaffected side, lateral with gauze separating toe of interest from others, tape other toes in flexion, CR perpendicular to MTP joint of great toe, CR perpendicular to PIP joint of the second toe, collimation Includes distal phalanx to distal metacarpal and surrounding soft tissue

Question 9

Lateral third - fifth toe position

Answer 9

Lateral recumbent on unaffected side, lateral with gauze separating toe of interest from others, tape other toes in flexion, CR perpendicular to PIP joint of the second toe, collimation Includes distal phalanx to distal metacarpal and surrounding soft tissue

Question 10

Essential projections for the toes

Answer 10

AP or AP axial, AP oblique, and lateral

Question 11

Lateral evaluation of the toes

Answer 11

Phalanges in profile (toenail should appear lateral), Phalanx without superimposition of the adjacent toes, When superimposition cannot be avoided, proximal phalanx must be demonstrated, Open IP joints, MTP joints will overlap, Density and contrast adequate to make bony trabeculation and soft tissue visible

Question 12

Essential projections of the foot

Answer 12

AP or AP axial, AP oblique, and lateral

Question 13

Technique for the foot

Answer 13

60 kVp at 2 mAs

Question 14

Technique for the foot

Answer 14

60 kVp at 2 mAs