M/C: Which of the following are true for an AP coccyx projection?
1. 15 degree cephalic angle.
2. 10 degree caudal angle
3. center 2 inches superior
... [Show More] to the pubic symphysis - ANSWER-2 and 3
More windings on the primary side of the transformer will create ____ voltage on the secondary side. - ANSWER-less
In the construction of a radiographic grid, what defines the grid ratio? - ANSWER-height of lead strips compared to the distance between them
What positioning technique could help enhance the quality of a lateral knee? - ANSWER-CR with a 5 degree cephalic angle
During a fluoro exposure, a patient's stomach absorbs a total of 0.012 joules of energy. The tissues of the stomach weigh 3 kilograms. What is the absorbed dose? - ANSWER-0.004 Gy
Genetic effects are those that manifest: - ANSWER-in future generations of the exposed individual
General Fluoro is limited to maximum entrance skin exposure rate of: - ANSWER-100 mGy/min
How is the patient positioned for an external rotation of the shoulder? - ANSWER-abduct the patients arm
T/F: Electrons and x-rays can be focused. - ANSWER-False
Which device in an image receptor can collect and convert light into an electrical signal? - ANSWER-CCD, Photodiode
if a patient begins to have symptoms of hives after an injection of contrast for an IVP, what should be done first? - ANSWER-call a radiologist
What is the most common cause of an off-level grid error? - ANSWER-grid shifts due to patient movement
The trachea bifurcates at the level of the _____. - ANSWER-Aortic notch
If the x-ray tube is moved rapidly during a fluoro exam, the image will blur. This is the result of the following: - ANSWER-camera tube lag
during an x-ray exposure, electrons accelerate towards what part of the x-ray tube? - ANSWER-Anode
What is the radiation weighting factor of x-rays? - ANSWER-1
M/C: The use of proper collimation serves to:
1. Increase image contrast
2. reduce radiation exposure to the patient
3. decrease effective focal-spot size - ANSWER-1 and 2
Inherent filtration refers to: - ANSWER-filtration that is part of tube design
What effect will decreasing collimation have on patient radiation exposure - ANSWER-increases patient radiation exposure
The severity of the hell effect can be increased by what change in SID? - ANSWER-decreasing sid
M/C: Federal Law on radiation protection requires which of the following?
1. signage for radiation areas
2. maintaining personal dose records
3. publication of personal dose records - ANSWER-1 and 2
What is the largest carpal bone? - ANSWER-capitate
T/F: the esophagus lies anterior to the trachea? - ANSWER-False
To function correctly, the current entering a transformer must be: - ANSWER-AC
A middle-aged male with a blood pressure reading 180/80 mmHg would be diagnosed as - ANSWER-hypertensive
PICC lines are used to: - ANSWER-Deliver medication through a vein
M/C: Which of the following facts are true regarding x-rays?
1. x-rays have no mass
2. x-rays travel at the speed of light
3. x-rays have a positive charge - ANSWER-1 and 2
M/C: Which of the following is true about the fibula?
1. it sits laterally to the tibia
2. it articulates with the tibia at the proximal end
3. it articulates at the distal medial talus - ANSWER-1 and 2
photons produced outside of the actual focal spot are known as: - ANSWER-Off focus radiation
M/C: Total filtration of the x-ray beam includes:
1. Added Filtration
2. Inherent filtration
3. collimation - ANSWER-1 and 2
Which sinus is demonstrated through the open mouth waters? - ANSWER-sphenoid
Which area is myelography not used on? - ANSWER-sacrum
M/C: How does the anode heel effect manifest itself on a radiographic image?
1. Higher exposure on the anode side of the image
2. Higher exposure on the cathode side of the image
3. Increased detail on the anode side of the image
4. increased detail on the cathode side of the image - ANSWER-2 and 3
Penumbra and detail share what relationship? - ANSWER-increased penumbra = decreased detail
When using AEC, which of the following may result in an image with excessive receptor exposure? - ANSWER-incorrect photo-timer cell selection
M/C: What portion of the CR imaging plate protects the plate from unwanted light and background radiation? choose two.
A. protective layer
B. phosphor layer
C. conductive layer
D. light shield layer - ANSWER-c and d
How does the presence of oxygen affect the radiosensitivity of a cell - ANSWER-increased radiosensitivity
What is the normal pulse rate for an adult? - ANSWER-60-100 beats per minute
Equivalent dose is a measurement that takes into consideration which of the following variables?
1. radiation type
2. tissue type
3. exposure rate - ANSWER-1
Within the oblique lumbar spine, the nose of the scotty dog is: - ANSWER-Transverse process
What is demonstrated in profile in the medial rotation view of the elbow? - ANSWER-coronoid process
A decrease in oxygen content is called? - ANSWER-Hypoxia
The wrist should be turned laterally ____ degrees when performing an oblique view - ANSWER-45
Acute infection of the parenchyma is characterized as: - ANSWER-pneumonia
On an AP Pelvis, if the lesser trochanters are partially visible, this indicates: - ANSWER-the feet are in anatomic position
The waters view best demonstrates:
1. Frontal sinus
2. maxillary sinus
3. ethmoid sinus
4. sphenoid sinus - ANSWER-2
What determines the quantity of electrons in tube current? - ANSWER-Heating of the filament
An avulsion fracture is characterized as: - ANSWER-Fracture where a tendon or ligament pulls off a piece of bone
The light signal released by photo-stimulable phosphors is too weak to produce a quality radiograph. The light is enhanced by a device called? - ANSWER-PMT (Photomultiplier tube)
A patient suffering from a gunshot wound to the abdomen would most likely suffer from this type of shock: - ANSWER-Hypovolemic shock
proper positioning of the PA axial caldwell projection includes: - ANSWER-OML perpendicular to the IR with a 15 degree caudad angle
A "coherent scattering" event may also be called - ANSWER-classical scattering
Dynamic range is defined as: - ANSWER-The range of exposures that can be captured by a detector
M/C: Personal monitoring devices are worn for what reasons:
1. check radiation safety practice
2. monitor dose in the air
3. estimate eye and thyroid dose - ANSWER-1 and 3
The smallest exposure difference that can be detected and displayed by the imaging system is called? - ANSWER-contrast resolution
During Fluoro imaging: reducing _____ increases _____. - ANSWER-reducing kvp increases patient dose
Select the bun level that most accurately describes proper kidney function: - ANSWER-7 to 20mg/100 ml
All the following are examples of conduction materials EXCEPT:
A. ALuminum
B. Air
C. Rubber
D. Water - ANSWER-c
Scatter radiation does not affect: - ANSWER-recorded spatial resolution
Which of these materials are essential to image production within CR imaging systems? - ANSWER-PSP
Limb-stunting, anecephaly and evisceration are all examples of: - ANSWER-Teratogenic effects
The relationship between distance and intensity can be expressed by which of the following? - ANSWER-Inverse Square Law
The isotropic nature of the x-ray beam means that it? - ANSWER-travels in all directions
If an x-ray tech touches their patient without asking first, they are guilty of: - ANSWER-battery
What is the most commonly used beam restricting device? - ANSWER-collimator
Effects of radiation induced damage can be studied from?
A. Hiroshima
B. Nagasski
C. Atomic bomb
D. All of these - ANSWER-d
What term describes the FUNCTIONAL portion of the kidney? - ANSWER-Nephron
What is the source of x-radiation in the x-ray tube? - ANSWER-focal spot
M/C: Ingesting barium sulfate and having multiple KUB radiographs performed at 15 and 30 minute intervals is used to visualize
1. Duodenum
2. Ileocecal Valve
3. Splenic Flexure
4. Plyoric Sphincter - ANSWER-1 and 2
What anatomy of the heart aids in delivering oxygen-rich blood to the body: - ANSWER->>>>>
A patient suffering from a hypoglycemic reaction should be given: - ANSWER-a bolus of sugar
Which bony landmark lies directly medial to the greater trochanter? - ANSWER-Pubic Symphysis [Show Less]