Smith 3

Question 1

how is CT scan produced

Answer 1

• CT scan uses thinly collimated X-ray beams arranged circumferentially around the body
• computer analysis of beams measured and a picture created
• rapid acquisition and reconstruction of damage

Question 2

axial CT scan positioning

Answer 2

• obtained with the feet perpendicular to the gantry table
• knees are extended with feet together
• image is in the transverse plane

Question 3

coronal CT scan positioning

Answer 3

• knees are flexed with feet flat against the gantry table
• foot boards and tape used to maintain position

Question 4

STUDY SLIDES

Question 5

clinical uses for CT scans

Answer 5

• superior depiction of skeletal anatomy (esp articular anatomy such as STJ)
• acute skeletal trauma or trauamtic arthritis
• osseous coalitions and infections
• planning conservative or surgical tx