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Ultrasound Final Exam Study Guide NCTA EXAM STUDY GUIDE NCTA QUESTIONS WITH SOLVED
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Ultrasound Final Exam Study Guide NCTA EXAM STUDY GUIDE NCTA QUESTIONS WITH SOLVED
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8/13/24, 3:52 AMUltrasound Final Exam Study Guide NCTA
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Terms in this set (47)
How many cycles a second is considered Above 20,000 cycles/second.
ultrasound?
Frequency Number of waves/second.
What is 1 Hertz (Hz) is equivalent to? 1 cycle/second
It gives another view that isn't x-ray, moving view with "real time", heart M-mode to
Some uses of ultrasound as a diagnostic aid? check valves, can easily see horse tendons, ribeye/back fat for EDP information, visible
liver, kidneys, uterus, and lungs.
Advantages of diagnostic ultrasound? Safe, non-evasive, soft-tissue imaging technique, and it does not use ionizing radiation.
Can't penetrate gas or bone. Obese animals decrease the power of the beam fast.
Disadvantages of diagnostic ultrasound?
Creates heat and the more crystals there are, the more heat is produced.
Commonly used transducer sizes? 3.5 mHz, 5.0 mHz, and 7.5 mHz.
Phantom A standard to check machine. Purpose of pins is to check for differences in resolution.
Changes focal point. Soft ones conform to surface and are very slippery with gel. Back
Stand-off pad
fat transducer guide is a type of pad.
Eliminates fat for better gel contact and improves image. Occasionally used alone if
Isopropyl alcohol
unable to shave patient.
Eliminates air between transducer and patient. Replace with corn oil in rib eye and back
Acoustic gel
fat work.
Better for small animals due to small area of contact and transducer is rounded at the
Types of transducers: Convex
bottom. View obtained is triangular.
Types of transducers: Linear array Larger surface area and square shaped transducer. View obtained is rectangular.
Basic patient preparation for ultrasound Shave hair in desired area and apply gel.
Evacuate manure from rectum and use gel on transducer. Always place transducer in a
Patient preparation for rectal exams
sleeve and apply gel to the outside. Guide probe in with hand or fingers.
In dogs and cats, what plane should you Longitudinal planes, then from there move to transverse planes.
Ultrasound Final Exam Study Guide NCTA
In horses, what plane should you always Frontal planes.
start scanning in?
For image interpretation, always use basic organ location, organ consistency, and organ structure.
knowledge of?
Echogenic Structures that reflect the sound beam.
Hyperechoic Increased reflection of ultrasound waves. Indicates very dense tissue.
Isoechoic Normal reflection of ultrasound waves. Indicates denser tissue.
Hypoechoic Decreased reflection of ultrasound waves. Indicates more cellular fluid.
always start scanning in?
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