Radiology - mcq Flashcards by Elise Ramberg

Which abnormality can be connected to clinical signs?

a. spondylosis deformans
b. hemivertebra
c. calcified nucleus pulposus
d. SH-2 epiphysiolysis

B. Hemivertebra

Weakness of hl, feacal incontinence, urinary incontinence

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The number of vertebrae in dogs

a. 6 cervical, 13 thoracic , 6 lumbar

b. 7 cervical 13 thoracic , 7 lumbar

c. 7 cervical, 12 thoracic , 7 lumbar

d. 6 cervical, 12 thoracic , 6 lumbar

b. 7 cervical 13 thoracic , 7 lumbar

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Which answer is true? The radiographic sign of a Wobbler-syndrom can be :

a. deformed cervical vertebra
b. deformed thoracic vertebra
c. deformed lumbar vertebra
d. deformed sacrum

a. deformed cervical vertebra

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Hansen type I. discus hernia

a. Is called protrusion in Latin
b. is generally acute clinical process
c. generally affects large breed dogs
d. the fibrotic change of the nucleus pulposus in the background

b. is generally acute clinical process

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Which radiographic change is not connected generally to clinical signs?

a. spondylosis deformans
b. discospondylitis
c. extradural compression on the myelogram
d. vertebral fracture

a. spondylosis deformans

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Which statement is false regarding discospondylitis?

a. it is characterized by osteolytic changes

b. it is an aseptic process

c. the end plates of the vertebrae are affected

d. it generally goes with pain and pyrexia

b. it is an aseptic process

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Which statement is false?

a. The generator determines the capacity of the x-ray machine.

b. Greater capacity allows shorter exposure time.

c. Reduction of the exposure time will increase the motion unsharpness

d. The most common reason for motion unsharpness is panting.

c. Reduction of the exposure time will increase the motion unsharpness

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What is the role of the collimator?

a. Filtration of the scattered beams

b. Setting the size of the x-ray beam

c. Setting the strength of the x-ray beam

d. Reduction of x-ray radiation

b. Setting the size of the x-ray beam

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Which one is not an exposure factor?

a. kV
b. mA
c. kW
d. s

c. kW

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Which statement is false?

a. The kVp describes the strength (penetrating power) of the x-ray beam.

b. The mA describes the number of x-ray photons

c. To maintaine the same exposure, if increasing the mAs you have to elevate the kVp too.

d. The same mAs can be created from different time components.

c. To maintaine the same exposure, if increasing the mAs you have to elevate the kVp too.

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What is the normal range of tube voltage in small animal radiography?

a. 0,1-2 kVp
b. 1000-2000 kVp
c. 40-100 kVp
d. 4-10 kVp

c. 40-100 kVp

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Which statement is true? The use of the grid

a. reduces the radiation exposure

b. improves the image contrast

c. improves the image sharpness

d. reduces the exposure time

b. improves the image contrast

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What is not a normal component of an indirect digital system (CR)?

a. x-ray tube
b. x-ray film
c. collimator
d. PSP plate

b. x-ray film

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Which statement is false?

a. The x-ray radiation is electromagnetic radiation.

b. X-ray beams cannot be deflected by a magnetic field.

c. Particles with higher energy have a higher penetrating power.

d. The elementary unit of the x-ray beam is the electron.

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Which statement is true?

a. Some digital technologies use x-ray films.

b. Fluoroscopy can be digital or analog.

c. DR systems can be digital or analog.

d. The picture of CR systems can be static or dynamic.

b. Fluoroscopy can be digital or analog.

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Which statement is true ?

a. Fluoroscopy causes very low radiation exposure.

b. Fluoroscopy is mainly used for static examinations.

c. During fluoroscopy the x-ray tube is generally above the animal.

d. Fluoroscope is also called C-arm

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The negatively charged particle of an atom is the:

a. proton.
b. neutron.
c. electron.
d. nucleus.

c. electron.

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As x-rays pass through materials, they have the ability to:

a. cause some substances to fluoresce (emit visible light).

b. completely remove an electron from an atom, leaving the atom positively charged.

c. cause chemical changes that can kill cells.

d. all of the above.

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Which of the following statements is true?

a. X-rays can be deflected by magnetic fields.

b. X-rays with longer wavelengths penetrate farther than rays with shorter wavelengths.

c. Electromagnetic radiation with higher frequency has more penetrating power through space and matter.

d. Gamma rays are required for the production of a radiograph.

c. Electromagnetic radiation with higher frequency has more penetrating power through space and matter.

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Electrons travel:

a. Toward the cathode in an x-ray tube

b. Away from the anode in an x-ray tube

c. Toward the anode in an x-ray tube

d. None of them is true

c. Toward the anode in an x-ray tube

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X-ray photons travel:

a. toward the cathode in an x-ray tube.

b. away from the anode in an x-ray tube.

c. toward the anode in an x-ray tube.

d. None of them is true.

b. away from the anode in an x-ray tube.

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Ways to increase penetrating power of x-rays include:

a. increasing kVp.
b. increasing the time setting.
c. increasing thermionic emission.
d. increasing mAs.

a. increasing kVp.

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The milliamperage-seconds (mAs) for 100 mA and 1/10 sec is:

a. 10 mAs
b. 10000 mAs
c. 100 mAs
d. 1mAs

a. 10 mAs

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According to Santes- rule, if a cats abdomen measures 8 cm, FFD is 100 cm, kVp is:

a. 72
b. 56
c. 66
d. 52

b. 56

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Increasing the film-object distance: a. The resulting image will be larger. b. The resulting image will be sharper. c. The resulting image will be distorted. d. Both a and b is correct.

a. The resulting image will be larger

One percent of the energy produced at the anode is in the form of a. heat b. x-rays c. light d. none of the above.

b. x-rays

The temperature of the filament within the cathode is controlled by: a. time setting. b. the source-image distance. c. kVp setting. d. mA setting.

a. time setting.

Which is a characteristic of x-rays? a. Their total number produced is determined by kV b. Longer wavelengths have more penetrating power. c. Their intensity increases as SID (source-image distance) decreases. d. They diverge from a light source.

c. Their intensity increases as SID (source-image distance) decreases.

The potential difference between the anode and cathode is measured in a. kilovolts b. kilowatts c. milliamperes d. centimeters

a. kilovolts

Higher kVp settings allows for a ___ mAs and ___exposure time. a. higher, higher b. higher, lower c. lower, lower d. higher, higher

c. lower, lower

Which of the following increases radiographic density? a. thinner body parts b. increased mAs c. increased density of the bodypart being radiographed d. decreased kVp

d. decreased kVp

Which of the following radiographs should have the shortest scale of contrast? a. abdomen b. thorax c. femur d. all are approximately equal

d. all are approximately equal

The primary exposure factor that controls scatter radiation is a. kVp b. mAs c. increased exposure time d. the collimator setting

b. mAs

What do grids contain that controls scatter radiation? a. Molybdenum b. Aluminium c. Silver d. Lead

d. Lead

Where is a grid located? a. between the patient and the cassette b. between the patient and the x-ray tube c. above the x-ray tube d. under the cassette

a. between the patient and the cassette

To prevent magnification and distortion of the object being radiographed, the patients must... a. be as parallel to the film as possible b. be as close to the film as possible c. be as close to the x-ray tube as possible d. both a and b are correct

d. both a and b are correct

When viewing a radiograph over laterally positioned animal a. the head should be at the top of the viewbox /display b. the head should face the viewer’s left with this spine at the top c. they had shoot face with the viewer’s right with the spine at the top d. the head should face the viewer’s left with the spine at the bottom

b. the head should face the viewer’s left with this spine at the top

Any body part exceeding this measurement requires the use of a grid to reduce fog producing scatter radiation a. 20cm b. 10cm c. 2.5 cm d. 30cm

b. 10cm

Which statement is false? a. The use of grid is recommended over 10 cm object diameter. b. Using a grid, the dose of the radiation should be reduced c. The grid filters the scatter radiation d. The grid contains small lead strips standing vertically or in an angle facing toward the x-ray tube

b. Using a grid, the dose of the radiation should be reduced

Which statement is false? The scattered beam a. is negligible concerning radiation safety of the staff b. originates mostly from the patient’s body c. is disadvantageous concerning the quality of the radiograph d. is less intense than the primary beam

a. is negligible concerning radiation safety of the staff

Which statement is false? The x-ray beam is a. invisible b. makes chemical changes in photoemulsions c. produces light flash in fluorescent materials d. penetrates bodies without losing energy

d. penetrates bodies without losing energy

Which one does not belong to the basic radiographic opacities a. metal b. wood c. stone d. gas

b. wood

With the use of a grid we can a. reduce the radiation exposure b. improve the image contrast c. improve the image sharpness d. reduce the exposure time

b. improve the image contrast

Which statement is incorrect? The x-ray (is)... a. ionizing radiation. b. electromagnetic radiation. c. travels at the speed of light. d. consists of charged particles.

d. consists of charged particles.

What is not a normal component in the digital radiographic technology? a. x-ray tube b. intensifying screen c. grid d. collimator

b. intensifying screen

The attenuation of the X-ray beam does not depend on which parameter? a. atomic number b. object thickness c. physical density d. optical density

d. optical density

Which components are different in conventional and digital radiography? a. x-ray tube b. generator c. grid d. detector

d. detector

What is the main source of the radiation exposure of the personnel ? a. leaking radiation from the x-ray tube b. the primary beam c. the secondary beam originating from the patient d. none of them

c. the secondary beam originating from the patient

Which statement is false ? a. bones are more radiolucent than metals b. fat is more radiopaque than fluids c. gas is more radiolucent than fat d. fluids and soft tissues have the same opacity

b. fat is more radiopaque than fluids

The cause of an unsharp x-ray image cannot be : a. motion b. increased distance between the object and the detector c. low kV d. high mAs

b. increased distance between the object and the detector

Which statement is true regarding the radiographic image? a. The distortion is less on the periphery. b. Distortion can be prevented by centralization. c. Objects look smaller on radiograph than their real size. d. Unsharpness may come only from motion.

b. Distortion can be prevented by centralization.

Which statement is true? a. Image acquisition is faster in CR, than in DR systems b. CR systems are cheaper, than DR systems c. In the DR systems the cassette contains a PSP plate d. A reader or scanner is a normal component of a DR system

b. CR systems are cheaper, than DR systems

Which exposure facture could be used in small animal radiography ? a. 8mAs b. 100 mAs c. 0,8 mAs d. 800 mAs

a. 8mAs

Which statement is false? a. The mAs describes the number of x-ray photons . b. Higher capacity generators are required to produce longer exposure time . c. The contrast of the image is mainly based on the mAs d. Scatter radiation is mainly based on mAs .

b. Higher capacity generators are required to produce longer exposure time .

Which statement is false? In case of a chest radiograph a. Longer exposure time is recommended b. Smaller exposure values are needed compared to and abdominal radiograph of the same diameter c. The contrast will be higher compared to the abdomen d. Motion unsharpness is a common problem

a. Longer exposure time is recommended

Which exposure factors cause same blackening on the detector than 60kV/8mAs? a. 70 kV/ 16 mAs b. 50 kV/ 20 mAs c. 80kV/2mAs d. 40 kV/ 10 mAs

c. 80kV/2mAs

Which of the following is not an image parameter ? a. density b. sharpness c. magnification d. contrast

c. magnification

Which statement is true ? a. the overexposed digital image will be too bright. b. the overexposed analog image will be too dark. c. the underexposed analog image will be too dark. d. the under exposed digital image will be too bright

b. the overexposed analog image will be too dark.

Which statement is false ? a. in case of wrong exposure factors the digital image will be motten. b. The S-value informs you about the exposure . c. The image can be motten both in over- and underexposed cases d. Digital systems require much higher doses than analog systems .

d. Digital systems require much higher doses than analog systems .

Which statement is true ? a. You don't have to use grid for the chest . b. You don't have to use grid about 10 centimeter object thickness . c. The use of the grid is often not required in digital systems d. The create improves the image sharpness

d. The create improves the image sharpness

The opacity of which organ differs from the others ? a. Urinary bladder b. Gallbladder c. Trachea. d. Heart

c. Trachea.

One of the following is NOT a form of protection against ionizing radiation a. distance b. shielding c. dose equivalent d. time

c. dose equivalent

A personal dose meter is a. worn on the outer side of protective clothing b. is obligatory for everybody c. indicates overexposure with light and sound signal d. records the effective dose

d. records the effective dose

The X-ray beam does NOT a. cause radioactivity b. ionize matter c. travel at the speed of light d. require electric current to generate

a. cause radioactivity

In veterinary diagnostic radiology adverse may include a. stochastic effects b. deterministic effects c. radiation sickness d. none

a. stochastic effects

An especially sensitive tissue type for ionizing radiation is a. the skin b. the bone marrow c. the nervous sytem d. none

b. the bone marrow

In case of deterministic effects a. severity is proportionate to dose b. there is no threshold c. the typical unit of measure is Sievert d. the most common result is a malignant tumour

a. severity is proportionate to dose

It is officially safe to put a hand in the primary X-ray beam with a. lead gloves on b. with nothing on c. with a double layer of protective lead on d. none of the above

d. none of the above

Radon a. is incorporated after inhalation b. is released from industrial fallout c. is generated by X-ray d. is absent in Europe

c. is generated by X-ray

X-ray photons in the body normally are NOT a. absorbed b. reflected c. scattered d. transmitted

d. transmitted

Why can be a structure more radiopaque than the other? a. It has the same diameter, but it consists of elements of lower atomic numbers b. it has the same material. but it's thinner c. it consists of elements of higher atomic number and has the same diameter d. it consists of elements of smaller atomic number and it is thinner

c. it consists of elements of higher atomic number and has the same diameter

Which statement is false? a. The canine tooth is located rostral to the tympanic bulla. b. The patella is located cranial to the fabella. c. The sternum is located ventral to the heart. d. The olecranon is located dorsal to the carpus

d. The olecranon is located dorsal to the carpus

What if the object is not in the center of the detector plate? a. The resulting image will be enlarged. b. The resulting image will be distorted. c. The resulting image will be unsharp. d. The resulting image will be overexposed.

c. The resulting image will be unsharp.

Which statement is true? a. You can't reach into the primary beam even with lead gloves on. b. The laead glove protects from the primary beam. c. If you don't see the bones of your gloved hand on the radiograph, then no radiation was exposed to your hand. d. Only pregnant women can't reach into the primary beam.

b. The laead glove protects from the primary beam.

What is not true for DICOM files? a. They can be inspected with commercial image viewer programs b. Contain images of TIFF format. c. The x-ray images have a size of 10-30 megabytes. d. They contain metadata besides the image.

a. They can be inspected with commercial image viewer programs

Which statement is incorrect. Compared to the JPEG image is the DICOM fires are a. less appropriate for diagnostics. b. bigger. c. preferred more by the owner. d. cannot be inspected with a medical image viewer program.

c. preferred more by the owner.

A commonly performed contrast study in small animal radiology a. thoracic cavity infusion b. pulmonary contrast study c. laryngeal contrast instillation d. none of the aboveinstillation d. none of the above

d. none of the above

Myelography is primarily used to diagnose a. spinal cord bleeding b. spinal cord compression c. spinal cord necrosis d. brain circularoty disorders

b. spinal cord compression

In myelography, a contrast agent is injected into the following space: epidural subdural subarachnoid spinal

subarachnoid

In the study of In the study of megaesophagus one of the following methods is NOT used: a. survey radiographs b. barium sulfate paste swallow c. carbon-dioxide inflation d. feeding barium sulfate mixed with pet food

c. carbon-dioxide inflation

When is liquid barium sulfate entirely emptied from the stomach following per os administration in a healthy dog? a. after 1 hour b. after 4 hours c. after 12 hours d. after 24 hours

b. after 4 hours

Which one of the following retrograde contrast studies is NOT performed in dogs? a. positive contrast cystography b. negative cont rast cystography c. positive contrast urethrography d. negative contrast urethrography

d. negative contrast urethrography

Which statement is false regarding the radiography of intestinal obstructions? a. the obturating object and the distended proximal intestinal loops may be seen on the radiograph at the same time b. the obturating object may be seen without secondary X-ray signs on the radiograph c. in certain cases the radiographic finding may be unremarkable d. contrast study is used in every case to make the diagnosis of intestinal obstruction

d. contrast study is used in every case to make the diagnosis of intestinal obstruction

Which statement is not true? n Carnivores the homogenous abdomen... a. may suggest abdominal effusion b. is normal in young animals c. is normal in cachectic animals d. is normal in obese patients

d. is normal in obese patients

What contrast medium would you choose for double contrast cystography? a. iodinated contrast and barium sulfate b. air and barium sulfate c. iodinated contrast and air d. air only

c. iodinated contrast and air

Which statement is true? In case of an intestinal obstruction a. the use of barium sulfate is contraindicated b. unevenly the standard intestinal loops are always visible c. the radiograph can be completely normal d. the gas filled stomach is pathognostic

c. the radiograph can be completely normal

Which contrast can be used to examine the urethra? a. Liquid BaSO4 b. powder BaSO4 c. organic iodine compound d. inorganic iodine compound

c. organic iodine compound

Which of the above organs can be generally seen on a survey radiograph? a. pancreas b. ovars c. adrenals d. aorta

d. aorta

The best method to detect the rupture of the ureters is a. double contrast cystography b. excretory urography c. excretory urethrography d. retrograde urethrography

b. excretory urography

Which statement is true? In small animals ... a. every uroliths are visible on the survey radiograph b. Urethrography is recommended to confirm cystolithiasis c. Ectopic ureters can be detected by intravenous urography. d. The best method to confirm urinary bladder rupture is negative contrast cystography

c. Ectopic ureters can be detected by intravenous urography.

Negative bronchogram is typical in which pulmonary pattern? a. nodular pattern b. alveolar pattern c. bronchial pattern d. interstitial pattern

b. alveolar pattern

Which contrast medium can be used in case of a suspected esophageal perforation? a. Liquid BaSO4 b. liquid BaSO4 and canned food c. organic iodine compound d. inorganic iodine compound l

c. organic iodine compound

In case of a tracheal hypoplasia the diameter of the trachea is less than a. the 1/3 of the length of the third rib b. the 20% of the thoracic inlet c. the double of the length of the second lumbar vertebra d. one intercostal space

b. the 20% of the thoracic inlet

Which of the following is typical for tracheal hypoplasia? a. the entire trachea is narrower than normal b. the trachea is narrowed in the thoracic inlet c. the respiratory phase has an influence on the diameter of the trachea d. the narrow portion is generally located inside the chest

a. the entire trachea is narrower than normal

In which condition can we see the tracheal wall separated from the neighboring tissues? a. pneumothorax b. pleural effusion c. pneumomediastinum d. negative bronchogram

c. pneumomediastinum

What is the basic structure of the pulmonary pattern? a. Bronchi b. Pulmonary vessels c. Alveoli d. None of them

b. Pulmonary vessels

A Vertebral Heart Scale a. describes the length of the vertebrae b. describes the size of the heart c. can be measured on the VD thoracic radiograph d. can be measured on the LL lumbar spine radiograph

b. describes the size of the heart

Which statement is not true for the tracheal collapse? a. Its radiographic appearance is influenced by the respiratory phase. b. The entire trachea is affected. c. Its cause is the softening of the tracheal C-cartilage. d. Toy breeds are affected.

b. The entire trachea is affected.

Which statement is true? On a lateral chest radiograph... a. the left ventricle is located cranioventrally. b. the left atrium is located caudodorsally c. the right ventricle is located craniodorsally d. the right atrium is located caudoventrally

b. the left atrium is located caudodorsally

Which statement is false? In case of thoracic effusion a. the opacity of the thorax is increased. b. the outline of the organs gets sharper. c. diaphragmatic hernia sometimes cannot be ruled out. d. type of the fluid cannot be determined.

b. the outline of the organs gets sharper.

What contrast medium would you use to demonstrate vascular strangulation of the esophagus? a. barium-sulfate b. inorganic iodine compound c. air d. The use of contrast medium is contraindicated

a. barium-sulfate

which one is not a pulmonary pattern? a. Alveolar b. Fibrous c. Interstitial d. Bronchial

b. Fibrous

The tracheal hypoplasia is common in which breed? a. Dachshund b. English bulldog c. German shepherd d. Irish setter

b. English bulldog

Which contrast medium can be used for the non-perforated esophagus? a. barium-sulfate suspension b. organic iodine c. both d. none of them

c. both

Which statement is false? When obtaining radiographs of fractures, it is important􏰣 a. to take orthogonal projections. b. to have the neighboring joints in the picture too. c. in case of uncertainty take x-ray of the contralateral limb too. d. always take radiograph of the thorax too.

d. always take radiograph of the thorax too.

What is the normal anatomy of the long bones? a. epiphysis – metaphysis – diaphysis – metaphysis – epiphysis b. metaphysis – diaphysis – epiphysis – diaphysis – metaphysis c. diaphysis - epiphysis - metaphysis - epiphysis – diaphysis d. metaphysis - epiphysis - diaphysis - epiphysis – metaphysis

a. epiphysis – metaphysis – diaphysis – metaphysis – epiphysis

Which part of long bones is radiolucent? a. cortex b. subchondral bone c. growth plate in young animals d. growth plate in adults

c. growth plate in young animals

Sunburst-like periosteal reaction is typical for which disorder? a. malignant bone tumors b. bone cyst c. osteochondrosis dissecans d. benign bone tumors

a. malignant bone tumors

Which statement is true? a. The joint capsule is visible in the radiograph. b. The subchondral bone is not visible in the radiograph. c. The joint cartilage is not visible in the radiograph. d. Joint ligaments are visible in the radiograph.

c. The joint cartilage is not visible in the radiograph.

Radiology - mcq Flashcards

(109 cards)