Chapter 9 pages 210-212

Question 1

a portion of the lamina located between the superior and inferior articular processes is called the-

Answer 1

pars interarticularis

Question 2

the superior and inferior vertebral notches join together to form the -

Answer 2

intervertebral foramina

Question 3

which radiographic position best demonstrates intervertebral foramina?

Answer 3

lateral

Question 4

the central ray projection, at 45 degrees, best demonstrates the -

Answer 4

zygapophyseal joint

Question 5

the central ray projection, 90 degrees, best demonstrates the-

Answer 5

intervertebral foramina

Question 6

would the degree of angle to demonstrate the structures be greater or less for the lower lumbar vertebrae as compared with the upper?

Answer 6

• 50 degree for the upper
• 30 degree for the lower

Question 7

the small foramina found in the sacrum are called-

Answer 7

pelvic sacral foramina

Question 8

the anterior and superior aspect of the sacrum that forms the posterior wall of the pelvic inlet is called the-

Answer 8

promontory

Question 9

what is another term for the sacral horns?

Answer 9

cornu

Question 10

the sacroiliac joints lie at an oblique angle of ___ degrees to the coronal plane

Answer 10

30 degrees

Question 11

what is the formula formal term for the tailbone?

Answer 11

coccyx

Question 12

what is the name of the superior broad aspect of the coccyx?

Answer 12

base

Question 13

the degree obliquity required for an oblique projection at the T12-L1 level is approximately ____ whereas the L5-S1 spine level requires a(n) ____. Therefore, a(n) ____ oblique is performed for the general lumbar spine

Answer 13

50 degree; 30 degree: 45 degree

Question 14

true or false: the use of higher kVp and lower mAs for lumbar spine radiography improves radiographic contrast but increases patient dose

Answer 14

true

Question 15

true or false: placing a lead blocker mat behind the patient for lateral lumbar spine positions improves image quality

Answer 15

true

Question 16

true or false: gonadal shielding should always be used for male and female patients for studies of the lumbar spine, sacrum, and coccyx

Answer 16

true

Question 17

true or false: the AP projection of the lumbar spine opens the intervertebral joint spaces better than the AP projection

Answer 17

false

Question 18

true or false: the knees and hips should be extended for a recumbent AP projection of the lumbar spine

Answer 18

false

Question 19

true or false: an increased SID of 44 to 48 inches (110cm to 120cm) reduces magnification of the spine anatomy

Answer 19

false

Question 20

true or false: the lead blocker mat and close collimation must not be used when performing digital imaging of the lumbar spine

Answer 20

false

Question 21

true or false: when positioning the obese patient, the iliac crest is typically at the level the inferior margin of the flexed elbow

Answer 21

false