Positioning Basics

Question 1

Which films are done at 72”?

Answer 1

• all lateral cervical views
• all oblique cervical views
• lateral chest view
• PA chest view
• AP full spine

Question 2

Why are certain films taken at 72”?

Answer 2

to minimize magnification

Question 3

What level is found at the mastoid tip?

Answer 3

C1

Question 4

What level is found at the thyroid cartilage?

Answer 4

C4

Question 5

What level is found at the VP?

Answer 5

C7

Question 6

What level is found at the sternal notch?

Answer 6

T2

Question 7

What level is found at the xyphoid tip?

Answer 7

T10

Question 8

What level is found at the iliac crest?

Answer 8

L4/L5

Question 9

What level is found at the ASIS?

Answer 9

S2

Question 10

What level is found at the greater trochanter?

Answer 10

• pubic symphysis

- coccyx tip

Question 11

What level is found at the ishcial tuberosities?

Answer 11

bottom of pelvis

Question 12

What units are used when measuring with the calipers?

Answer 12

centimeters

Question 13

Where are filters typically placed?

Answer 13

over the thinnest portion

Question 14

When is the safest time to x-ray a woman of childbearing age?

Answer 14

within the 10 day period after the onset of menstruation

Question 15

What 4 things must be included with x-ray documentation?

Answer 15

• unique identifiers
• exam information
• facility information
• correct anatomical markers

Question 16

What 3 things fall under unique identifiers?

Answer 16

• patient number
• name
• DOB

Question 17

What is the minimum amount of thickness used for gonad shielding in a patient who has not passed reproductive age?

Answer 17

.25mm