Module 10 Flashcards
The human body contains how many individual segments in the vertebral column
33
Write down the vertebral column in sections and numbers
7 cervical 12 thoracic 5 lumbar 5 sacral 5 coccygeal
All vertebral segments have the same structural components with the exception of which 2
C1 and C2
This arch appears on almost all vertebrae creating a canal down the spine that protects a spinal cord
Vertebral foramen
Why is the focus of bmd measurements L1 through L4
They are unobstructed by overlaying bone, exhibit normal variations, and don’t have major differences and shape from person to person
This landmark is located at the lower point it into the Sternum and helps center the upper medium line
Xiphoid process
This landmark helps center the lower medium line
ASI S, anterior superior iliac spines
Located at the level of L4 this is the approximate starting point for the lumbar scan
Iliac Crest
What level is the ASIS located
2nd sacral segment
If the iliac crest can’t be palpitated what is another soft tissue landmark for centering
Umbilicus
What level is the umbilicus located
L3 through L4 intervertbral space
How long should ADXA scan be postponed for any medical imaging procedures using oral or iv contrast
2 days
How long should ADXA scan of an elderly patient be postponed for following a barium study
10 days to 2 weeks
How long should DXA scan be postponed for nuclear medicine studies using technique technetuim 99M
48 to 72 hours
How long for DXA postpone after using iodine 131?
One week
After placing the block under the patient’s legs, the technologist uses the laser positioning light in table controls to center on this body plane
Median sagittal plane
What should the technologists do after placing the positioning block for a lumbar spine analysis
Use the laser positioning light and table controls to center the table on the patient’s immediate sagittal point
Where is the starting point typically located for the lumbar spine
The upper portion of S1 and includes the lower margins of L5 in the top of the iliac crests
On a lumbar scan where should the scan stop
Up the T12 vertebrae with the 12th rib visualized
What conditions would vertebrae be excluded from lumbar scan
Excessive joint hypertrophy or osteophytes
What is the factory default scan for a Hologic unit
Fast array
According to the ISCD how many vertebrae must be used for a diagnostic evaluation
2, so not have to be adjacent
This score is only used for postmenopausal women and men older than 50
T score
This score is used for premenopausal women and men younger than 50
Z score
What appears on a DXA scan as missing bone in the central vertebral column
Laminectomy
On a typical PA lumbar scan which lumbar vertebra is likely to have transverse processes resembling wings
L5
The lumbar spine is a primary site because lumbar vertebrae are what?
Typically reflect the highest vertebral bone density
For obese patients the umbilicus can be used as an appropriate landmark for locating the
Iliac crest
This shows which parts of the scan were calculated as bone and soft tissue
The bone map
The T score measurement of the lumbar spine compares the pt total BMD value too
A young adult reference population of the same gender
If the shoulders are not square with the pelvis during a lumbar scan the technologist must do what
Reposition the patient correctly
T or F a lap band port is an example of a non removable artifact that can affect the diagnostic quality of a lumbar scan
True
