Chapter 1 DMSU-102 Top Questions and answers, 100% Accurate, rated A
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Chapter 1 DMSU-102 Top Questions and answers, 100% Accurate, rated A
What is the range of normal hearing? - 20hertz[Hz] & 20 kilohertz
Ultrasound refers to sound frequencies greater than? - 20kHz
Piezoelectric effect? - Certain crystals expand & contract slightly when placed in an alte...
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Chapter 1 DMSU-102 Top Questions and
answers, 100% Accurate, rated A
What is the range of normal hearing? - ✔✔20hertz[Hz] & 20 kilohertz
Ultrasound refers to sound frequencies greater than? - ✔✔20kHz
Piezoelectric effect? - ✔✔Certain crystals expand & contract slightly when placed in an alternating
electrical field
Reverse Piezoelectricity? - ✔✔Allows the same crystal to create an electric potential, making the crystals
useful as receivers & sources of sound waves
Christian Doppler (1942) Doppler effect: - ✔✔When a source of wave motion moves, the apparent
frequency of the emitted wave changes
William Fry - ✔✔Developed high-intensity ultrasonic, noninvasive surgical techniques
Francis Fry - ✔✔Developed computer-based low-intensity ultrasound unit for soft-tissue visualization
Kossoff & Garrett - ✔✔Gray-scale imaging &analof scan converter systems
Baker - ✔✔Designed several implantable flowmeters
,Baker, Rushmer, & franklin - ✔✔Developed a small, hand-held, portable, continuous-wave Doppler
device for transcutaneous use
Strandness - ✔✔Developed noninvasive measuring of the peripheral vascular system
Baker & Watkins - ✔✔Developed first pulsed Doppler unit (1970)
Feigenbaum - ✔✔Pericardial effusion (1965)
Real time imaging - ✔✔Refers to images produced by automated scanners with sufficient speed to
visualize & record moving structures
Krause & Soldner (Germany) - ✔✔Constructed a fast B-scanner
Continuous-wave (cw) - ✔✔Ultrasound provided rapid and noninvasive imaging of the peripheral
vasculature
Three-dimensional (3D) and four dimensional (4D) ultrasound imaging - ✔✔VOCAL (volume calculation)
enables reformation & rendering of the imaged area of interest
Musculoskeletal ultrasound (MSUS) - ✔✔Imaging used for examining superficial soft-tissue pathology
Hand-carried units (HCU) - ✔✔Are compact ultrasound systems weighing less than 10 pounds
CHAPTER 3 - DMSU 102 - ✔✔
What are Basic Human Needs? - ✔✔Physical needs, safety & security, Love & belonging, self-esteem,
self-actulaization
What are physical needs? - ✔✔oxygen, water, food, elimination, rest, shelter
, What is safety & security? - ✔✔Patients fear Procedures & equipment, gain a patient's trust &
compliance by providing a reason for a procedure, who will be doing it, how it will be performed,
describing what sensations to expect
Love and belonging? - ✔✔Elderly & children can be slow to recover or even die if this need is not met.
family, friends, & members of the health care profession can fulfill this need
What is self-esteem? - ✔✔when patients are ill or injured, they may feel not productive or attractive,
especially if injury results in amputations or deformities. they feel they no longer have valve
Self-Actualization? - ✔✔Many people feel the need to pursue learning & understanding throughout
their lives. sonographers can influence them thru appropriate resources.
what is communication? - ✔✔The ability to receive, interpret & respond appropriately & clearly to
messages, successful only when the sender & the receiver understand the message the same way.
Nonverbal communication? - ✔✔consists of eye contact, facial expressions, body language, gestures,
posture, tone of voice, and touch
What are effective verbal communication guidelines? - ✔✔Prepare your thoughts before you speak,
analyze the intent of each message, adapt to your physical settings whenever communicating.
What are effective verbal communication guidelines? - ✔✔Adequately brief the patient, consider your
tone of voice, rate of your speech, and your body language when communicating, follow up your
communications & ask the right questions to ensure that the patien understands.
Social conversation? - ✔✔Polite or friendly exchanges of factual or social info. (chitchat) Does not
provide significant info. identify problems or result in solutions. important in establishing a relationsip
with patients.
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