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Veterinary Diagnostic Imaging Flashcards

7 cards from real ICVA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Veterinary Diagnostic Imaging flashcards as text
  1. Which ultrasonographic artifact is caused by the total reflection of the sound beam by a highly reflective surface, such as bone or gas?

    Answer: Acoustic shadowing

    Acoustic shadowing occurs when a highly reflective surface (bone, gas, calculi) completely reflects or absorbs the ultrasound beam, creating a shadow behind the structure.

  2. On a thoracic radiograph, which opacity is CORRECTLY matched to its radiographic appearance?

    Answer: Metal opacity — brightest white on the image

    Metal has the highest atomic number and attenuates the X-ray beam the most, appearing as the brightest white (most opaque) structure on radiographs.

  3. Which statement about MRI safety is MOST accurate for veterinary practice?

    Answer: Pacemakers and ferromagnetic implants are absolute contraindications to MRI

    Pacemakers can malfunction and ferromagnetic implants can move or heat within the MRI magnetic field, making them absolute contraindications to MRI scanning.

  4. A cat presents with acute hindlimb paresis. Survey spinal radiographs are normal. What is the MOST appropriate next imaging step?

    Answer: Advanced cross-sectional imaging (MRI or CT myelogram)

    Normal survey radiographs in a cat with acute hindlimb paresis indicate a soft tissue cause; MRI or CT myelogram is required to evaluate the spinal cord and intervertebral discs.

  5. In equine radiography, which standard view best evaluates the navicular bone for palmar/plantar flexor cortex erosions?

    Answer: Flexor tangential (skyline) view

    The flexor tangential (skyline) view projects the navicular bone in profile, making it the optimal view for detecting flexor cortex erosions and cyst-like lesions.

  6. Doppler ultrasonography in veterinary medicine is primarily used to assess:

    Answer: Blood flow direction and velocity

    Doppler ultrasonography detects the frequency shift of sound waves reflected from moving blood cells, allowing assessment of blood flow direction and velocity.

  7. Which of the following is a recognized limitation of thoracic CT compared to thoracic radiography in dogs?

    Answer: CT requires general anesthesia or heavy sedation, increasing procedural risk

    CT typically requires general anesthesia or heavy sedation in veterinary patients to prevent motion artifact, introducing anesthetic risk compared to conscious radiography.