Chapter 9 pages 210-212 Flashcards
a portion of the lamina located between the superior and inferior articular processes is called the-
pars interarticularis
the superior and inferior vertebral notches join together to form the -
intervertebral foramina
which radiographic position best demonstrates intervertebral foramina?
lateral
the central ray projection, at 45 degrees, best demonstrates the -
zygapophyseal joint
the central ray projection, 90 degrees, best demonstrates the-
intervertebral foramina
would the degree of angle to demonstrate the structures be greater or less for the lower lumbar vertebrae as compared with the upper?
- 50 degree for the upper
- 30 degree for the lower
the small foramina found in the sacrum are called-
pelvic sacral foramina
the anterior and superior aspect of the sacrum that forms the posterior wall of the pelvic inlet is called the-
promontory
what is another term for the sacral horns?
cornu
the sacroiliac joints lie at an oblique angle of ___ degrees to the coronal plane
30 degrees
what is the formula formal term for the tailbone?
coccyx
what is the name of the superior broad aspect of the coccyx?
base
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
50 degree; 30 degree: 45 degree
true or false: the use of higher kVp and lower mAs for lumbar spine radiography improves radiographic contrast but increases patient dose
true
true or false: placing a lead blocker mat behind the patient for lateral lumbar spine positions improves image quality
true
true or false: gonadal shielding should always be used for male and female patients for studies of the lumbar spine, sacrum, and coccyx
true
true or false: the AP projection of the lumbar spine opens the intervertebral joint spaces better than the AP projection
false
true or false: the knees and hips should be extended for a recumbent AP projection of the lumbar spine
false
true or false: an increased SID of 44 to 48 inches (110cm to 120cm) reduces magnification of the spine anatomy
false
true or false: the lead blocker mat and close collimation must not be used when performing digital imaging of the lumbar spine
false
true or false: when positioning the obese patient, the iliac crest is typically at the level the inferior margin of the flexed elbow
false
