22912237
Pregunta 1
Pregunta
What does MRI stand for?
Respuesta
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Marginal Resistance Imaging
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Magnetic Resistance Imaging
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Magnetic Resonance Imaging
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Marginal Routine Imaging
Pregunta 2
Pregunta
The combination of scattered radiation and radiation absorbed into the patient's body is known as:
Respuesta
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Attenuation
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Luminescence
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Penumbra effect
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Thermionic emission
Pregunta 3
Pregunta
Which of the following terms describes the process of electrons leaving their orbit from the atom when stimulated by a filament being heated?
Respuesta
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Thermionic emission
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Sudden braking
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Kinetic energy
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Boiling off
Pregunta 4
Pregunta
Which of the following is true about the cathode?
Respuesta
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It is where the x-rays are produced
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It produces electrons when heated
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It is where the electrons strike
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It can be stationary or rotating
Pregunta 5
Pregunta
Which of the following is a teratogenic effect of radiation?
Respuesta
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Cancer
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Skin erythema
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Blood count changes
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Malformation of a foetus
Pregunta 6
Pregunta
Penumbra will increase with:
Respuesta
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A reduced anode angle
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An increased anode angle
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A smaller actual focal spot
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A smaller effective focal spot
Pregunta 7
Pregunta
What is the anode primarily made of?
Respuesta
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Copper
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Tungsten
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Aluminium
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Molybdenum
Pregunta 8
Pregunta
Which of the following statements is correct?
Respuesta
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The filament within the anode is heated, electrons are produced, a potential difference is applied, and electrons are directed through the focussing cup towards the target.
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The filament within the cathode is heated, x-rays are produced, a potential difference is applied, x-rays hit the anode and are directed down towards the patient.
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Electrons produced at the cathode through thermionic emission are collected by the focussing cup, a potential difference is applied, they are propelled towards the anode where they are converted to x-rays.
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Electrons produced at the cathode by kinetic energy are collected by the focussing cup, a potential difference is applied, they are propelled towards the anode where they are converted into x-rays.
Pregunta 9
Pregunta
Which of the following is NOT a resulting effect of radiaton?
Respuesta
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Biological
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Photographic
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Luminescence
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Electromagnetism
Pregunta 10
Pregunta
X-rays are described as having:
Respuesta
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Short wavelength, high frequency
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Short wavelength, low frequency
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Long wavelength, high frequency
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Long wavelength, low frequency
Pregunta 11
Pregunta
The focussing cup prevents electrons from:
Respuesta
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Decelerating
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Repelling
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Diverging
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Converging
Pregunta 12
Pregunta
Which of the following statements are true?
Respuesta
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With a stationary anode, the size of the actual focal spot changes (increases) whilst the size of the effective focal spot stays the same.
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With a stationary anode, the size of the actual focal spot stays the same whilst the size of the effective focal spot increases.
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With a rotating anode, the size of the actual focal spot changes (increases) and so does the size of the effective focal spot.
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With a rotating anode, the size of the actual focal spot changes (increases) but the size of the effective focal spot stays the same.
Pregunta 13
Pregunta
Atomic number is determined by:
Respuesta
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Amount of electrons in an atom
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Amount of neutrons and electrons in an atom
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Amount of protons in an atom
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Amount of neutrons and protons in the nucleus
Pregunta 14
Pregunta
Which of the following is NOT a type of diagnostic imaging?
Respuesta
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Gamma scintigraphy
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Fluoroscopy
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Electrocardiography
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Laparoscopy
Pregunta 15
Pregunta
An effect which occurs due to exposure to radiation irrespective of amount is known as:
Respuesta
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Somatic
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Deterministic
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Genetic
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Stochastic
Pregunta 16
Pregunta
If the mA is 50 and the exposure time is 0.5s the mAs would be:
Respuesta
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25
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55
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100
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250
Pregunta 17
Pregunta
When taking a radiograph, the Film Focal Distance FFD is set at 75 and the mAs is 10. If the FFD is increased to 150, the new mAs should be:
Respuesta
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5
-
20
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40
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80
Pregunta 18
Pregunta
A radiograph is taken at 60kV and 50mAs. If the kV was changed to 70 what would the new mAs be?
Respuesta
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70kV and 12.5mAs
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70kV and 30mAs
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70Kv and 15mAs
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70kV and 25mAs
Pregunta 19
Pregunta
A radiograph taken using an mAs of 8 with the mA set at 50 will use an exposure time of:
Respuesta
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0.16s
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0.32s
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0.58s
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0.62s
Pregunta 20
Pregunta
If an x-ray machine is set with a time of 0.2s and an mAs of 12, the mA will be:
Respuesta
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6
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24
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60
-
240
Pregunta 21
Pregunta
When x-raying thick/dense tissue you will need a:
Respuesta
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High kV
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High mAs
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Low kV
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Low mAs
Pregunta 22
Pregunta
Increasing the FFD will:
Respuesta
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Improve sharpness, create an overexposed image and need a high mAs
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Improve sharpness, create an underexposed image but require low mAs
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Reduce sharpness, create an underexposed image and require high mAs
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Reduce sharpness, create an overexposed image but require low mAs
Pregunta 23
Pregunta
A radiograph that is too dark may have been:
Respuesta
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Taken with a low kV
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Overexposed or overdeveloped
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Underexposed or underdeveloped
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Taken with an excessive film focal distance
Pregunta 24
Pregunta
What is the exposure fault for an image high in contrast?
Respuesta
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kV too high
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kV too low
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mA too high
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mA too low
Pregunta 25
Pregunta
Objects that allow x-rays to pass through them are:
Respuesta
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Denser
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Radiopaque
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Radiolucent
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Likely to be bone
Pregunta 26
Pregunta
Distinct black crescent marks seen on an image are most likely to be caused by:
Respuesta
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Static electricity
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Finger nail marks
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Splashes of developer
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Dust trapped in the cassette
Pregunta 27
Pregunta
A film which is high in contrast could be corrected by:
Respuesta
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Increasing the mAs
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Decreasing the mAs
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Increasing the kV
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Decreasing the kV
Pregunta 28
Pregunta
Which one of the following grids if not used correctly, would lead to a film fault where there is a loss of image on each side or “cut off”
Respuesta
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Pseudo-focussed
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Cross hatched
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Potter bucky
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Focussed
Pregunta 29
Pregunta
Which of the following is the most likely cause of a yellow-brown stain over the whole of the film?
Respuesta
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Insufficient washing after developing
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Insufficient washing after fixing
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Expired developer
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Expired film
Pregunta 30
Pregunta
An image which is too dark when processed could be caused by which of the following?
Respuesta
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Film focal distance too great
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mAs too low
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kV too high
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Time (sec) too short
Pregunta 31
Pregunta
Which of the following is the usual frequency (MHz) at which an abdominal scan would be performed on a large dog?
Respuesta
-
3
-
5
-
7
-
10
Pregunta 32
Pregunta
Which mode would be selected on an ultrasound machine if a video-like image was required for example when looking at the movement of the heart?
Respuesta
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A
-
B
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M
-
Doppler
Pregunta 33
Pregunta
Which of the following tissues will attenuate and therefore reflect ultrasound waves the most?
Respuesta
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Bone
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Fat
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Soft tissue
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Fluid
Pregunta 34
Pregunta
Tissue which is anechoic and therefore does not reflect any ultrasound waves will appear what colour?
Respuesta
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Black
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Dark grey
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White
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Light grey
Pregunta 35
Pregunta
Blood returning to (moving towards) the probe on a Doppler ultrasound image will be:
Respuesta
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Red
-
Blue
-
Black
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Dark grey
Pregunta 36
Pregunta
Which of the following is NOT a recognised technique of producing a contrast radiograph?
Respuesta
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Barium used within the gastrointestinal tract
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Triple combination of iodine, barium and air
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Air used as negative contrast medium
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Air and iodine used together
Pregunta 37
Pregunta
Positive contrast media used in studies has a:
Respuesta
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Dark appearance on a radiograph
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Low ability to absorb x-rays
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High atomic number
-
Radiolucent effect
Pregunta 38
Pregunta
Which if the following terms is associated with the introduction of contrast media into the bladder for cystography?
Respuesta
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Anterograde
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Retrograde
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Descending
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Ascending
Pregunta 39
Pregunta
Which of the following is true regarding patient preparation for contrast radiography?
Respuesta
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A radiograph should be taken as soon as the contrast media is administered
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Patients should be starved for 48hrs
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Plain radiographs should be taken first
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All patients should be anaesthetised
Pregunta 40
Pregunta
Which of the following is recommended as part of patient aftercare following myelography?
Respuesta
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Place the patient in lateral recumbency
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Maintain the patient's head flexed at 90° to the spine
-
Maintain elevation of the patient's head 10° above the level of the spine
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Ensure the patient's head is kept lower than the level of their spine
Pregunta 41
Pregunta
Gloves used as PPE in small animal radiography have what thickness of lead equivalent?
Respuesta
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0.25mm
-
0.35mm
-
0.25cm
-
0.5mm
Pregunta 42
Pregunta
Who is responsible for providing guidance on creation of the radiography local rules?
Respuesta
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Health and Safety Executive
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Radiation Protection Advisor
-
Radiation Protection Supervisor
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National Radiological Protection Board
Pregunta 43
Pregunta
Adult workers have a maximum permissible dose of radiation of 100 msv over a 5 year period. What is the maximum dose in any given year they can receive?
Respuesta
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20 msv
-
50 msv
-
25 msv
-
100 msv
Pregunta 44
Pregunta
Thermoluminescent dosimeters contain which type of crystals?
Respuesta
-
Lithium fluoride
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Lithium heparin
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Silver bromide
-
Silver halide
Pregunta 45
Pregunta
Which of the following does not represent effective radiographic health and safety?
Respuesta
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Collimation of the beam to the smallest size possible
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Maintaining a film focal distance of 100cm
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Use of a radiation protection advisor
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Reduction of exposure factors
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