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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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  • February 3, 2023
  • 26
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers

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  • chapter 1 dmsu 102 top questions and answers
  • 100 accurate
  • rated a what is the range of normal hearing 20hertzhz amp 20 kilohertz ultrasound refers to sound frequencies greater than 20

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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



Jacque & Pierre Curie (1880) - ✔✔Piezoelectric effect & reverse piezoelectricity



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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