38 Questions
What is the recommended position for rectal examination in large species?
Standing position
What should be considered when using equine stocks for rectal examination?
The height of the rear door
What is the purpose of analgesia, sedation, or anesthesia during examination of small animals?
To enhance the animal's comfort
What should be done to ensure the best imaging results on the screen?
Reduce ambient lighting
What is the purpose of clipping hair before ultrasound imaging?
To enhance the sound penetration into the tissue
Why is it important to remove dirt and skin oil using alcohol before ultrasound imaging?
To create a better image contrast
What is the purpose of ensuring close contact between the transducer and the skin during ultrasound imaging?
To prevent air gaps or bubbles
What type of transducer is recommended for creating a full cross-sectional image?
Linear transducer
Which type of transducer creates a rectangular cross-sectional image?
Curved transducers
What is the purpose of using a gel standoff in ultrasound imaging?
To reduce near field noise in superficial structures
Which frequency should be chosen for imaging the eye?
10 MHz
How is the leading edge of the ultrasound beam marked on the transducer?
Notch
In which direction is the leading edge of the ultrasound beam conventionally directed in longitudinal or dorsal imaging?
Cranially
What is an important principle to remember when learning 3D anatomy displayed on a 2D ultrasound image?
All of the above
What is the recommended approach for undertaking a systematic ultrasound examination?
All of the above
What should be done with ultrasound images for subsequent review and clinical records?
Store them appropriately
What is a common artifact in ultrasound imaging?
Near field noise
Which type of transducer is commonly used for imaging equine tendons?
Transducers with different standoffs built in
Multiple lines of sound emitted from the transducer create a rectangular cross-sectional image.
False
Curved transducers fire multiple lines of sound that diverge from each other to create a triangular 'beam'.
True
Near field noise can be helpful when examining superficial structures.
False
A gel standoff can be created using a blob of ultrasound gel.
True
The frequency chosen for ultrasound imaging determines both the longitudinal resolution and depth of penetration.
True
True or false: Ultrasound imaging should be performed in a darkened room to achieve the best contrast and information?
True
True or false: It is important to remove dirt and skin oil using alcohol before applying ultrasound gel?
True
True or false: Linear transducers create a rectangular 'beam' and require full contact along the surface to get a full cross-sectional image?
True
True or false: Small animals should be considered for analgesia, sedation, or anesthesia during examination to enable the procedure to go ahead?
True
True or false: Clipping hair is necessary before ultrasound imaging to ensure proper sound penetration into the tissue?
True
What are some specific considerations when using equine stocks for rectal examination?
Consider the height of the rear door
What is the purpose of analgesia, sedation, or anesthesia during examination of small animals?
To enable the examination to go ahead
What should be done to ensure contact between the transducer and the skin during ultrasound imaging?
Close contact, ideally with no air gaps or bubbles
What is the recommended position for examining large species in recumbency?
On a table
What type of transducer is recommended for creating a full cross-sectional image?
Linear transducer
What is the purpose of using a gel standoff in ultrasound imaging?
To reduce near field noise and create a larger cross-sectional image.
What is the recommended approach for learning hand-eye coordination in ultrasound imaging?
Repeated practice and consistency in animal position, operator position, transducer handling, and imaging technique.
What are the two principles that govern the longitudinal resolution and depth of penetration in ultrasound imaging?
Frequency and transducer orientation.
What is the convention for displaying the leading edge of the ultrasound beam on the screen?
Cranial or to the right, depending on the imaging plane.
Why is it important to undertake a systematic ultrasound exam and use standard imaging views?
To ensure thorough examination and accurate interpretation of the ultrasound findings.
Test your knowledge on safety and specific considerations for performing rectal examinations in large animals, such as horses. Learn about the appropriate use of personal protective equipment (PPE) and restraints, as well as the importance of positioning and avoiding potential risks during the examination.
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