Vet Logic Questions Flashcards
When a person is overexposed to ionising radiation and carcinogenic damage occurs, it may manifest as; A)Reddening of the skin B)Development of a tumour C)A burn D) Hair loss
B)Development of a tumour
The minimum lead equivalent for protective lead gloves is; A)0.25mm B)0.35mm C)0.3mm D)0.2mm
B)0.35mm
Before a veterinary practice can perform radiography for the first time, a risk assessment will be performed by the; A)Radiation protection advisor B)Radiation protection supervisor C)Practice principal D)Health and safety executive
D)Health and safety executive
The radiation protection advisor must; A)Hold an RPA validated certificate B)Work within the practice C)Hold a diploma in veterinary radiology D)Oversee all radiographic procedures
A)Hold an RPA validated certificate
The controlled area;
A)Is usually at least a 2m area surrounding the X-ray tube head
B)I designated by the person performing the procedure
C)May be entered by an persons wearing a lead gown during an exposure
D)Must be observed even when the machine is unplugged
A)Is usually at least a 2m area surrounding the X-ray tube head
When not in use, lead gowns should be stored by; A)Stacking in a pile B)Hanging on a hanger C)Draping over a chair or bench D)Folding and storing in a cupboard
B)Hanging on a hanger
Lithium fluoride crystals are found in a; A)Film badge dosimeter B)Fast x-ray film C)Thermoluminescent dosimeter D)Slow x-ray film
C)Thermoluminescent dosimeter
During abdominal radiography, optimal contrast is provided by using a; A) High mAs and high kV B) Low mAs and low kV C)Low mAS and high kV D)High mAs and low kV
A)High mAs and low kV
If the mAs for an exposure using a medium speed screen (200) is 2, the mAs with a fast screen (400) will be; A) 4 B) 3 C) 1 D) 8
C)1
The tissue with the highest atomic number is; A) Fat B) Cartilage C) Soft tissue D) Bone
D) Bone
X-ray emerging from the tube head;
A) Travel in straight lines at constant speed
B) All possess the same amount of energy
C) All penetrate the patient and react with the film
D) Are the same frequency and wavelength as gamma radiation
A) Travel in straight lines at a constant speed
Increasing the mAs for an exposure increases the; A) Speed at which the X-rays travel B) Number of X-rays produced C) Penetrating power of the X-rays D) Energy of the primary beam
B) Number of X-rays produced
If an exposure has settings of 60kV and 4mAs, increasing the kV to 70 means the mAs must be changed to; A) 1 B) 2 C) 8 D) 16
B) 2
X-rays are produced when rapidly moving; A) Neutrons collide with the anode B) Neutrons collide with the cathode C) Electrons collide with the anode D) Protons collide with the cathode
C) Electrons collide with the anode
High definition film; A) Has a few number of large crystals B) Needs less exposure than fast film C) Is suitable for the abdominal radiograph of an obese dog D) Has a large number of small crystals
D) Has a large number of small crystals
The safelight filter that should be used with green light-sensitive film is; A) Red B) Brown C) Blue D) Green
A) Red
The process by which electrons are produced at the cathode is; A) Thermionic emission B) Phosphorescence C) Radioluminescence D) Thermoluminescene
A) Therminonic emission
The voltage needed to accelerate the electrons in the tube head is produced by the; A) Autotransformer B) High voltage transformer C) Rectifier transformer D) Low voltage transformer
B) High voltage transformer
The crystals that are found in film emulsion are; A) Silver bromide B) Gadolinium oxysulphide C) Aluminium hydroxide D) Tungsten halide
A) Silver bromide
The optimum film focal distance for small animal radiography is; A) 50cm B) 120cm C) 100cm D) 60cm
C)100cm
Barium sulphate suspension is; A) Radiopaque and inert B) Radiolucent and inert C) Radiopaque and irritant D) Radiolucent and irritant
A) Radiopaque and inert
Barium sulphate suspension is the contrast medium of choice for; A) Gastrography B) Angiography C) Myelography D) Arthrography
A) Gastrography
A water soluble iodine based contrast medium is the most suitable agent for a contrast study of the; A) Kidneys B) Stomach C) Small intestine D) Oesophagus
A) Kidneys
Ultrasound imaging is a useful tool, providing good detail when examining; A) Bones of the limbs B) Sinuses in the skull C) Lung tissue D) Heart movement and rhythm
D) Heart movement and rhythm
General anaesthesia is NOT usually necessary for most patients undergoing; A) Endoscopic examination B) Ultrasound examination C) CT examination D) MRI examination
B) Ultrasound examination
Magnetic Resonance imaging relies upon a magnetic field and; A) X-rays B) Radio waves C) Gamma rays D) Ultrasound waves
B) Radio waves
Anaesthetic monitoring equipment made from non-ferrous material is essential when performing imaging using; A) Scintigraphy B) CT C) MRI D) Ultrasound
C) MRI
The imaging procedure that uses gamma radiation is; A) Scintigraphy B) Fluoroscopy C) CT D) MRI
A) Scintigraphy
Scintigraphy produces image detail by injecting; A) Non-ionic iodine B) Radioactive isotopes C) Water-soluble iodine D) Gadolinium
B) Radioactive isotopes
Collimating of the primary beam results in;
A) A reduction in penetrating power of the x-rays
B) Greater incidence of scattered radiation
C) Greater detail on the radiograph
D) More x-rays hitting the film
B) Greater detail on the raidograph
To obtain a lateral radiograph of the abdomen, the cranial collimation landmark is; A) Cranial to the xiphoid process B) The ischia arch C) The manubrium D) Causal to the last rib
A) Cranial to the xiphoid process
Radiography of the abdomen of deep-chested dogs may produce an image that is relatively;
A) Underexposed in the cranial and caudal abdomen
B) Overexposed in the cranial and caudal abdomen
C) Underexposed in the cranial abdomen and overexposed in the causal abdomen
D) Overexposed in the cranial abdomen and underexposed in the caudal abdomen
C) Underexposed in the cranial abdomen and overexposed in the caudal abdomen
To improve the sharpness of a thoracic radiograph, the exposure should be made during; A) The expiratory pause B) Late expiration C) Early inspiration D) Maximum inspiration
D) Maximum inspiration
The grid ratio is the;
A) Relationship between the height of the lead strips and the spice between them
B) Factor by which mAs has to be increased to compensate for the grid
C) Distance the grid is placed from the X-ray tube head
D) Factor by which kV has be increased to compensate for the grid
A) Relationship between the height of the lead strips and the space between them
The correct patient position in order to obtain a craniocaudal view of the right stifle of a dog is; A) Sternal recumbent B) Left lateral recumbent C) Dorsal recumbency D) Right lateral recumbency
C) Dorsal recumbency
A grid should be used; A) Underneath a cassette B) For tissues greater than 10cm depth C) Only during contrast studies D) For all limb radiographs
B) For tissues Greater than 10cm depth
An example of Radiopaque positioning aid that should be kept out of the primary beam is a; A) Trough B) Rope tie C) Foam wedge D) Sandbag
D) Sand bag
The preferred recumbency for thoracic radiography of a dyspnoeic patient is; A) Sternal B) Right lateral C) Dorsal D) Left lateral
A) Sternal
To obtain a radiograph for the BVA KC hip scoring scheme;
A) Position of the forelimbs is important
B) Position of the tail is unimportant
C) The femurs should be rotated inwards
D) The Carlo should be rotated outwards
C) The femurs should be rotated inwards
If only two projections of the thorax are required, they will be; A) VD and right lateral B) VD and left lateral C) Right and left lateral D) DV and right lateral
D) DV and right lateral
The temperature of the developing solution in an automatic processor is approximately; A) 20c B) 28c C) 22c D) 18c
B) 28c
The radiographic technique that uses an imaging plate is; A) Computed radiography B) Analog radiography C) Direct digital radiography D) Film radiography
A) Computed radiography
An underdeveloped radiograph has a; A) Dark background and a dark image B) Dark background and a pale image C) Pale background and dark image D) Pale background and a pale image
D) Pale background and a pale image
The statement relating to digital radiography that is true is;
A) Underexposure of a digital image cannot be corrected
B) Collimation of the primary beam is not necessary
C) An imaging plate should be periodically erased
D) An imaging plate is less sensitive to radiation then radiographic film
C) An imaging plate should be periodically erased
A digitizer is used in; A) Computed radiography B) An automatic film processor C) Direct digital radiography D) A daylight film processor
A) Computed radiography
A detector array is used in; A) Direct digital radiography B) Film radiography C) Analog radiography D) Computed radiography
A) Direct digital radiography
A soot and whitewash film appears as a; A) Grey image on a grey background B) Dark image on a black background C) White image on a black background D) Pale image on a white background
C) White image on a black background
Radiographic latitude refers to;
A) Underexposure of fast film
B) The orientation of the cassette in relation to the patient
C) The range of exposure over which a radiographic film produces a diagnostic image
D) Lateral recumbency of the patient
C) The range of exposures over which a radiographic film produces a diagnostic image
