Radiology Part II - III Flashcards
Exam (26 cards)
What are the landmarks for a lateral abdominal radiograph of a cat or dog?
mid thoracic to greater trochanter
What is the contrast medium that we have the animal ingest for a GI contrast study called?
Barium
What are the recommended exposure intervals for doing a barium study?
0, 15, 30, 60, 90 minutes
Beam enters patient ventrally and
exits dorsally- what view is this?
VD
Beam enters patient dorsally and
exits ventrally- what view is this?
DV
The beam enters the patient’s left side and exits the patient’s right side - which view is this ?
Right Lateral
An oblique view is often associated with which body part in a radiograph study?
Extremities
Why could there be different KVP & MA settings for the abdomen vs thorax even if the patient could measure the same for each?
Different densities in abdomen vs the thorax
Which of the following are helpful positioning tools to help level out your patient and prevent distortion when taking radiographs?
Foam wedges and foam trough
A VD view of the pelvis for hip dysplasia evaluation should not show which of the following?
Stifles rotated laterally
The plantar surface is the
Caudal aspect of the rear limb, distal to the tarsal joint
What is the parallel technique in veterinary dental radiography, and for which teeth is it typically used?
It involves placing the dental film directly behind and parallel to the tooth, with the x-ray beam directed perpendicular to the film. It is used only for the teeth distal to and including the mandibular third premolars (3P3 or 307/407).
What is the bisecting angle technique in dental radiography, and what artifacts may occur if the x-ray beam is not aimed correctly?
The bisecting angle technique involves aiming the x-ray beam perpendicular to an imaginary line that bisects the angle between the tooth’s long axis and the film. Incorrect angling may result in elongation or foreshortening.
What does the abbreviation SLOB stand for in dental radiography, and for which tooth is this rule commonly used?
SLOB stands for “Same Lingual, Opposite Buccal” and is used to distinguish the roots of the maxillary fourth premolar.
Echogenicity
Appearance of tissue on ultrasound
Hyperechoic
Tissues appears brighter due to increased wave reflection
Anechoic
Lacking echos, echos free (Black)
Hypoechoic
Reflects fewer sound waves appear darker
Isoechoic
Two tissues with the same echogenicity
What is attenuation in the context of ultrasound imaging?
The loss of sound wave energy as it travels through tissue due to absorption, reflection, or scattering.
What is the primary difference between conventional CT scanning and helical (spiral) CT scanning?
Conventional scanning captures one slice at a time with the table moving between each slice, while helical scanning uses continuous rotation of the x-ray tube and table movement to acquire data in a spiral path.
Mark all of the following that utilize ionizing radiation
Dental Radiography
Computerized Tomography
Abdominal x-rays
PET with CT (positron emission tomography (PET) and computed tomography (CT))
What safety precautions must be taken before entering a veterinary MRI suite?
Confirm that all staff and animals are free of any metal implants or loose metallic objects, as the MRI’s strong magnetic field can cause dangerous projectile accidents. Only MRI-safe equipment such as stretchers, monitors, and oxygen tanks should be used.
Why might contrast agents be used during CT or MRI scans in veterinary patients?
To highlight areas of infection, tumors, or vascular abnormalities for better visualization.
