coRRecT
What degree of central ray angulation should be used for the axial plantodorsal projection of
the os calcis? ✔✔ 40 degrees
Which of the following should be considerations when using an AEC device:
1) proper selection of time,
2) proper selection of ionization chamber(s),
3) precise positioning over the desired chamber(s) ✔✔ 2 & 3 only
What is the rounded projection on the anterior proximal surface of the tibia called? ✔✔ Tibial
tuberosity
You are called to the trauma center to perform a bedside radiographic procedure on a patient,
and you suspect the patient may have hepatitis B. What safety practices should you follow to
protect yourself? ✔✔ Wear gloves
Intentional or unintentional acts performed by an individual and based on unreasonable
conducts are known as: ✔✔ Torts
What amplifies the visible light released from the photostimulable phosphor (PSP) after it is
stimulated? ✔✔ Photodetector
Which of the following test tools would be used to measure FSS? ✔✔ Star test pattern
Select the correct order in which the skin responds to radiation exposure:
1. Epilation
,2. Dry desquamation
3. Erythema
4. moist desquamation ✔✔ 3, 4, 2, 1
For persons with hematopoietic syndrome, survival time shortens as the radiation dose: ✔✔
Increases
These hematopoietic cells are highly sensitive because they live only about 24 hours and it is
believed that their numbers drop quickly because large whole-body doses of radiation kill the
mature cells first. ✔✔ Lymphocytes
When performing magnification radiography, if the SID is 40 in. (100 cm) and the object-image
receptor distance (OID) is 6 in. (15 cm), what is the magnification factor? ✔✔ x 1.18
What can happen if a diabetic patient has taken his or her insulin but has been NPO since
midnight? ✔✔ The patient can go into insulin shock
For which type of habitus will the diaphragm be at the highest position? ✔✔ Hypersthenic
The right sacroiliac joint should be clearly demonstrated in which of the following? ✔✔ LPO
An extremity encased in a fiberglass cast requires what modification to exposure factors? ✔✔
Usually no increase in exposure factors is needed
When using pulse progressive fluroscopy, which of the following practices will further lower
patient dose? ✔✔ Pulsing the fluoroscopic x-ray beam at the lowest frame rate
, The production of heat at the anode is directly proportional to _________. ✔✔ Tube current
Where is the exposure timer located in a typical x-ray circuit? ✔✔ On the primary side of the
step-up transformer
Added filtration in a diagnostic x-ray machine is used for the main purpose of reducing radiation
dose to the: ✔✔ Patient's skin
The yearly occupational radiation dose-equivalent limit for stochastic effects of the whole body
is now determined to be: ✔✔ 50 mSv
Which of the following type of personal monitor measures radiation through a chemical change
or reaction? ✔✔ Film badge
A radiologist asks you to administer a radiographic contrast medium. The patient collapses from
anaphylactic shock. You may be protected from a lawsuit under the doctrine of respondeat
superior, meaning: ✔✔ Let the master answer
What is the most common cause of injury to a health-care worker in the Radiology department?
✔✔ lifting heavy object
Using the line-focus principle to gain sharper images will enhance a side effect known as: ✔✔
anode heel effect
Where would a "central line" catheter be located? ✔✔ subclavian vein
For the cervicothoracic region lateral projection (swimmer's technique), the recommended
position of the humeral head closest to the IR is move ✔✔ anteriorly