Final Flashcards
For every five degrees of tube tilt, the tube should be moved towards the bucky
1in
The central ray of the AP thoracic is always directed to:
Level of T6
The “ten day rule” for females of child bearing age refers to performing non- emergency abdominal-pelvic x-ray ______
during the 10 days after the onset of menstration
Where is the central ray for vertex?
ALL OF THE ABOVE
a. C1
b. Centre of film
c. Centre head
The theoretical maximum energy of any photon in an x-ray beam is equal to which of the following?
the kVp set on the console
Which of the following is in the correct order from the most radiopaque to the least
Metal, Bone, Water, Fat, Air
To maintain constant radiographic density on a film, an increase of 15% in kVp should be accompanied by:
Decreasing the mAs by 1/2
The Intensifying screen is located:
In the cassette
Which of the following is NOT a radiation protection device
Grid
scatter increases on radiograph when
kvp is increased
the feet must internally rotated 15 degrees on the AP lumbo[pelvic projection to achieve which of the following
True AP projection of the proximal femur and femoral neck
The function of a filter is to ____
remove soft x-rays
A definition of radiographic contrast would be the _____?
Tonal relationship between one density and another
Of the following, which type of radiation is the major constituent (the larger portion) emitted form the target?
Bremsstrahlung Radiation
The lateral sacrum and coccyx are often taken together as one view, the AP projections, however, must be taken separately as:
the Tube angles are different
The principal electrostatic law implies that?
an electron will repel an electron
.With all other factors unchanged, if OID is reduced, image magnification will be ____ a. distortionally increases
directly decreased
Which of the following interaction between x-ray photons and matter make the most significant contribution to patient does?
photoelectric effect
To determine if the patient is probably a male on the AP pelvis view:
the angle below the symphysis pubis is acute
.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
Two reasons why proper collimation is important are”:
It increases contrast and decreases patient exposure
The central ray of the L5/S1, Sacrum, coccyx in the AP projection should be:
Be perpendicular to the plane of the object to be radiographed
.On the lateral sacrum view, the tube angle is
No tube tilt
This view is a good one for ruling out spondylolisthesis:
L5/S1 spot lateral
the technical factor controls the quality of the photons in the beam:
mAs
The zygapophyseal joints in the cervical spine are best visualized on this projection
Lateral Cervical
The zygapophyseal joints in the cervical spine are best visualized on this projection
Lateral Cervical
Angle of the Jaw (Gonion)
C3
Vertebral Prominens
C7
Episternal Notch
T2-T3
Umbilicus
L3-L4
thyroid cartilage
C5
PSIS
S2
inferior angle of scapular
T6
the major advantage of taking an AP lumbopelvic view PA on a large patient is
to achieve more uniform radiographic density by compression
preferred to take the flexion/extension projections at the same SID as the lateral cervical because
the is better comparison of structures size from film to flim
the purpose of the swimmers view is to visualize
C6-T2
which of the following is considered the principal factor controlling xray penetration
kilovolts
which of the following is a way to reduce the radiation dose to the patient
collimations as close as possible
For improved image quality and reduced radiation dose to the patient, this type of technique chart is preferred in the chiropractic practice:
fixed kVp, variable mAs technique chart to achieve constant radiographic
contrast
the guidelines for gonadal shielding / filtering include all of the following EXCEPT:
Whenever you need to provide increased contrast (tin foil hat technique)
lateral cervical flexion and extension projection should be taken
when ligament stability damage is suspect
a systematic approach to taking radiographs includes the following except
always have patient expire before exposure
the breathing instruction for the PA and lateral chest projection are
suspended respiration after the second or third inspiration
the IVFs in the lumbar spine are visualized on the projection
lateral lumbar
when choosing technical factors for radiographic projection it is important to consider this to avoid blur due to motion
choose high mA, short exposure time
the central ray for lateral cervical flexion and extension is
C4
the purpose of having the patient exhale and hold during the lateral cervical projection
to get the shoulders out of the way so that the lower cervical region can be visualized
where should the central ray for APOM be placed
C1
when taking the APOM the most important structure to clear from the area of interested is
teeth
to determine if the patient is probably a male on the AP pelvis view
angle below the symphysis pubis is acute
how long is it necessary for the operator to remain behind the protective barrier after an exposure has been made beofre the pt may be safely approached
E. none of the above
15, 30, 45, 60 seconds
The RADD 3511 homepage has an xray that shows?
an AP lumbar film that looks like ostrich
for an AP view of lower cervical spine, the correct angle of the central ray to the image receptor
15 d cephalad
which of the following reasons cited as purposes for xray of symptomatic persons is considered clinically justifiable
deciding future clinical management
scatter increases when
kvp is increased
upright lateral sacrum view the tube angle is
no tilt
