The main purpose of the x-ray developer is to
Convert the exposed silver halide to black metallic silver
Which of the following typically appear hyperechoic (bright white) on an ultrasound image?
Bone
Gas
When taking a radiograph of an equine limb the portable x-ray source is 90 cm away from the cassette. You then move closer so that the source is now 30cm away from the cassette. If no changes are made to the settings of the machine, what will be the beam
9x greater intensity at 30cm compared to 90cm
Which bone is not associated with the forelimb?
Tibia
A higher frequency ultrasound transducer has _______ image resolution and _______ penetration than a lower frequency transducer
Increased
Decreased
Which anatomic structure would cast the lightest image on a radiograph?
Femur
Which anatomic structure will show the greates amount of magnification in a ventrodorsal radiograph?
Sternum
A grid is recommended to reduce scatter radiation when a body part exceeds what measurement?
10cm
Which of the following artifacts cannot be produced in a digital radiograph?
Fixer not washed away
An RVT is positioning a portable x-ray machine to take a radiograph of the left hock of a horse. She is standing behind and to the left side of the horse. What is the radiographic projection?
Plantolateral-dorsomedial oblique
Because of the relationship between the mA and the mAs, as you increase the mA you can
Decrease the time to reduce the chance of movement
When taking a radiograph, you should whenever possible
Decrease exposure time, increase your distance from the radiation source, and increase shielding
The crystals of high-speed screens as xompared to ones of par speed are
Bigger and ther is less detail
Scatter radiation is more noticeable if there is
Higher kVp
Thicker patient
Larger field size
For the cervical series, you should center the beam on
C3-C4
A special study that involves a negative contrast media is
Pneumocystogram
If a film is too dark and overpenetrated, you should
Decrease kVp by 10-15%
If a radiograph is too light with adequate penetration, you should
Increase mAs 30-50%
A urine filled bladder is best described as
Anechoic
When depressing the "prep" switch on a rotating anode x-ray machine, you are effectively
Heating up the filament and spinning the rotating anode
To get more density on a film you should do what tot he kVp and mAs?
Increase either or both
Positive contrast media are considered to be
Radiopaque, which means it will be white on a processed film
An intravenous pyelogramis also referred to as an(n)
Excretory urogram
The field of view of the pelvis for the OFA includes
Pelvis
Femur
Stifle
To determine whether an animal had an ununited anoconeal process, the veterinarian would want you to x-ray the
Elbow
Which imaging technology has the least safety concern for the patient and tech?
Ultrasound
A veterinary tech notes that a film is too dark and there is minimal contrast. What is the most appropriate adjustment to be made to improve the quality of the repeat film?
Decrease kVp
When are abdominal radiographs best taken?
Animal exhales
When taking a lateral thoracic radiograph, you should make sure the spine and sternum are
Equidistant from the table
Which of the following does not affect radiographic density?
Object film distance
Which contrast medium listed is considered negative contrast?
Air
When radiographing a long bone, it is important to
Include the joint proximal and the joint distal
Foreshortening occurs when radiographing a long bone, and the
Bone is not parallel to the cassette
When the object to film distance is increased the image is
Magnified
What is the proper order of manual processing of x-ray film?
Develop
Rinse
Fix
Wash
Dry
Which of these techniques causes a major increase in scatter radiation?
Increasing kVp
What is the light sensitive chemical impregnated into an x-ray film?
Silver halide
Why are intensifying screens added to an x-ray cassette?
To cause light exposure of the film
Aluminum filters remove what part of the x-ray beam?
Low energy
A double contrast cystogram involves which of the following?
Positive contrast media injected intravenously that will be excreted via the kidneys into the bladder and air injected directly into the bladder
Which of the choices below is the correct order from least to most radiodense?
Gas
Fat
Fluid
Bone
Metal