Knee

Question 1

ID

Answer 1

Correct patient ID matched with the request form

Question 2

Marker

Answer 2

Correct anatomical marker located within the primary beam but outside of the region of interest

Question 3

ROI

Answer 3

The entire ROI is visualised from the distal third of the femur to the proximal third of the tibia. Laterally including the skin margins

Question 4

Positioning (AP)

Answer 4

The tibial spines are central relative to the femoral notch.
The patella is central relative to the femoral notch
1/3 of the head of the fibula is projected behind the tibia
I can see clearly though the femoro-tibial joint

Question 5

Positioning (Lateral)

Answer 5

The condyles are perfectly superimposed

The patello-femoral joint space is clearly demonstrated

Question 6

Collimation

Answer 6

4 cone marks are evident

Question 7

Exposure (kV)

Answer 7

The kV is adequate as when i window to see the entire ROI, I can see some bony detail through the thickest part of the anatomy. The bony trabeculae are visible throughout the ROI

Question 8

Exposure (mAs)

Answer 8

The mAs is adequate because when I window to see the whole ROI, I can see no evidence of quantum mottle, or saturation. This is backed up by an s-value near 150

Question 9

Unsharpness

Answer 9

I see no evidence of movement unsharpness

Question 10

Artefacts

Answer 10

I see no evidence of artefacts in the image. Common artefacts in this region might be clothing (seams or creases) or zips

Question 11

Anatomical Variants

Answer 11

I see no anatomical variants. more common ones in this region might be presence of a fabella, calcification of arteries.

Question 12

Pathologies

Answer 12

I see no obvious pathologies. The most common one in this area might be OA (4 signs),

Question 13

Relate back to the form

Answer 13

The clinical question was “? xxxx”. These images are diagnostic and no repeats are needed