Indications for imaging
Trauma, foreign bodies, podiatry request.
|
|
Anatomy Demonstrated
Plantar arch, calcaneum, tarsals.
Foot Lat Rt. Anatomy
Meschan, I. 1955 An Atlas of Normal Radiographic Anatomy
Saunders, London
|
Basic Patient Position
The patient lies supine on the table legs extended, long axis of
the limb in line with the long axis of the table, the foot is
dorsi flexed to bring the plantar aspect 90 to the film.The
patient then rotates externaly onto the affected side and flexes
the knee slightly to aid stability, a small pad under the knee
will aid correct positioning.
Foot Lat Lt. Position
Meschan, I. 1955 An Atlas of Normal Radiographic Anatomy
Saunders, London
|
Radiation protection
Direct lead rubber gonad protection using a "half
apron".
|
Central Ray
The vertical central ray is centred to medial cuniform
|
Exposure Factors
| Kv |
mAS |
FFD (cm) |
Grid |
Focus |
AEC |
Cassette |
| 60 |
5 |
100 |
No |
Fine |
No |
24 x 30 cm |
|
Evaluation of the Image
ID and markers must be present and correct in the appropriate
area of the film
Evidence of collimation on four sides equally around the
centering point.
Limits of the examination, superiorly the ankle joint,
inferiorly the plantar skin surface, lateralyy the distal
phanges medialy the calcaneum.
The metatarsals should be superimposed apart from the head of
the fith which should be projected below the others.
Optimal exposure should penetrate all the bone structures and
contrast should be low enough to visualise fully the bone and
soft tissue structures.
Foot Lat Rt. Radiograph
http://www.vh.org/Providers/TeachingFiles/NormalRadAnatomy/Images/
|
Related Projections
Foot DP and DP oblique.
Ankle, Tarsal bones and toes projections
|
Additional modalities
Standing laterals may be required.
|
 |
