Midterm Flashcards
the guidelines for gonadal shielding include all BUT the following:
Whenever the state inspectors show up at your office
Guidelines for gonadal shielding
Childbearing potential
Whenever shield will not cover up area of interest
Gonadal region is near or on edge of collimation
Pt expresses radiation concerns
10 day rule for females of child bearing age refers to performing non emergency abdominal pelvic xray:
During the 10 days after the onset of menstruation
The feet must be internally rotated 15 degrees on the AP lumbopelvic projection to achieve which of the following?
True A-P projection of the proximal femur
The AP lumbar projection should demonstrate
Segmental anatomy, T12 - SI joints
When choosing technical factors for radiographic projections, it is important to consider this to avoid blur due to motion:
High mA, short exposure time
The central ray for the lateral lumbosacral view is located horizontally and vertically at the ____ and _____
Top of Illiac crest and Top of Illiac crest
The most effective radiation protection device in the chiropractic Xray area is:
Gonadal shield
As demonstrated in lab, careful measurement of each patient setup is necessary for:
proper mAs
In order to best visualize the thoracic vertebrae of a patient with a significant scoliosis
the convexity should be closest to the film on the lateral view
The purpose of the radiographic grid is to:
Increase contrast on the fim
Which of the following are ways to reduce the radiation dose to the patient?
(choose all that apply)
fast film/screen combination
collimation as close as possible
gonadal shielding
The breathing instructions are important on the thoracic and lumbar projections because it
allows proper density above and below diaphragm
The maximum energy of any photon in any x-ray beam is equal to which of the following?
the kVp set on the console
The lateral lumbosacral view should visualize all the following except:
Pubic Symphysis
What CAN be viewed on a lateral lumbosacral view?
T12
Sacrum
Aorta
IVF
To maintain constant radiographic density on a film, if the SID is cut in half, the technical factors must be adjusted in this way:
Decreasing the mAs to 1/4 the original
The measurement of the AP lumbopelvic projection is made
At the level of the ASIS
The IVFs in the lumbar spine are visualized on this projection.
Lateral lumbar
The intensifying screen is located within a
Cassette
The function of a filter is to _____________?
Remove softer Xrays
Which of the following is in the correct order from the least radio-opaque to the most?
air – – fat – – water – – bone – – metal
The anode heel effect should be considered in a chiropractic office when _____________ (choose all that apply)
when having the machine installed in your office
when taking films with a LARGE field size and SHORT SID
X-ray photon production occurs at the _____________.
Anode
The lead protective housing controls leakage and scatter radiation through _____________.
Absorption
According to the anode heel effect, the radiation intensity is _____________ (choose all that apply)
Greater on the CATHODE side
A Davies Series refers to the following series of radiographs:
Cervicals
Gonadal shielding should be used on the male patient for which of the following exams:
Pelvis
Abdomen
Femur
In order to ensure adequate radiation protection, a quality control program includes checks on which of the following radiographic equipment conditions?
Reproducibility
Linearity
Positive Beam Limitation
Which of the following illustrates the Inverse Square Law?
Distance is the most effective protection from radiation
As distance from the radiation source increases, radiation decreases
The purpose of the swimmer’s view is to visualize
Lower Cervicothoracic Junction
Poor screen/film contact can be caused by which of the following?
damaged cassette frame
foreign body in cassette
warped cassette front
Radiographic accessories include all the following except
Automatic collimation
What are some radiographic accessories?
Positioning sponges
Sandbags
Lead blocks
Markers
The spinning top test can be used to evaluate
Timer accuracy
All the following devices may be located on the typical x-ray unit control panel except
rectifier
What can be found on your typical xray unit control panel
mA meter
kVp selector
time selector
What is the minimum total amount of filtration (inherent plus added) required in the normal diagnostic x-ray machine
2.5 mm AL equivalent
The two arrows are pointing to:
The cassette vertical stops
