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Lecture (12)
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Radiography of the Lower Limbs
Foot Basic Projections Dorsi-Plantar Lateral Oblique Dorsi-Plantar Foot Exposure Factors Kv mAs FFD (cm) Grid Focus Cassette 55 5 100 No Fine 24 x 30 cm
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Angled 10 -15 degrees towards heel Center Point Base of 3rd metatarsal
position Patient Supine or seated on table Knees flexed with feet separated Part position Rest plantar surface of foot firmly On cassette Adjust midline of foot parallel tolong axis of cassette Central Ray Angled degrees towards heel Center Point Base of 3rd metatarsal
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Structure shown Tarsals, metatarsals and phalanges
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Lateral Foot Exposure Factors Patient Position Part position
Kv mAs FFD (cm) Grid Focus Cassette 60 10 100 No Fine 24 x 30 cm Patient Position lying upon affected side Adjust leg & foot in lateral position Part position Adjust patella perpendicular to table Adjust plantar surface perpendicular to cassette Central Ray Perpendicular Center Point Medial cuneiform (at level of base of 3rd metatarsal)
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Structure shown Lateral view of Tarsals, metatarsals and phalanges
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Supine or seated on table Knees flexed with feet separated
Oblique foot Exposure Factors Kv mAs FFD (cm) Grid Focus Cassette 60 5 100 No Fine 24 x 30 cm Patient position Supine or seated on table Knees flexed with feet separated Part position Center toes with plantar surface flat Against cassette Medially rotate until plantar surface form angle of 30 degrees to cassette
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Tarsals, metatarsals & phalanges Oblique view of
Central ray Perpendicular Center Point 3rd metatarsal Structure shown Tarsals, metatarsals & phalanges Oblique view of
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