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soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... - Answer Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? - Answer 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in - Answer Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is the length of time it takes for - Answer one complete wavelength to pass a fixed point PRP is determined b...

Which artifact is illustrated by this image? - Answer a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? - Answer a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? - Answer a) Deny performance of the exam until a written request is received b) Seek approval from supervisor c) Verbally repeat the request back to t...

Which artifact is illustrated by this image? correct answera) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? correct answera) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? correct answera) Deny performance of the exam until a written request is received b) Seek approval from supervisor c) Verbally repeat the req...

Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain Correct Ans - a. transmit Which of the following is considered the memory of an ultrasound instrument? a. pulser b. transducer c. receiver d. beam former e. digital scan converter f. display monitor Correct Ans - e. digital scan converter Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transducer d. flow towards the transducer Correct Ans - b. turbu...

A sound wave is correct answermechanical, longitudinal A compression area of a sound wave is correct answerhigh pressure, high density A rarefaction area of a sound wave is correct answerlow pressure, low density Which is considered an acoustic variable correct answerpressure Which is a unit for pressure correct answerN/m2 Which is a unit for density correct answerlbs/cm3 Which wave propagates in a medium correct answersound The range for ultrasound is correct answergreater than 20KHz __...

Materials used for the matching layer of a transducer must have an impedance between impedance levels of the ______________ Correct Ans ~ skin and PE element Which of the following is an abnormality that would lead to an imcrease in the Reynolds number? Correct Ans ~ stenosis of the vessel If a 3.5 MHz wave is transmitted through the media listed below, the longest wavelength will be seen in the wave moving through ____________ Correct Ans ~ bone The speed of sound is fastest in bone. Long...

One reason why focused beams with low intensities are less likely to cause bioeffects is that a focused beam is less efficient in heating a large mass of tissue to a critical temperature. correct answerTrue Typically, the sonographer can adjust the compression function of a receiver. correct answerTrue Mean frequency is calculated from weighted sum of frequencies in the power spectrum. correct answerTrue Refraction always occurs at the interface between two media when the propagation speeds...

The congenital cardiac anaomaly seen most frequently in adults is: A. Ebstein's anomaly B. Bicuspid aortic valve C. Ventricular septal defect D. Endocardial cushion defect Correct Answer: B. Bicuspid aortic valve Which endocardiographic window is used in the detection and assessment of the inferior vena cava? A. apical B. subcostal C. parasternal D. suprsternal Correct Answer: B. Subcostal What is the number and location of the papillary muscles of a normal mitral valve? A. one; ...

what is secreted by developing follicles? - Answer estrogen what is secreted by the corpus luteum? - Answer progesterone what stimulates the growth and development of ovarian follicles? - Answer Follicle stimulating hormone Name the cells within the follicles that produce estrogen, which stimulates endometrial growth. - Answer theca cells Stimulates maturation of follicle and is responsible for Graafian follicular rupture causing ovulation. - Answer luteinizing hormone (LH) stimulated by...

Ovarian Follicle Cyst Correct Answer: An ovarian follicle increased over 2.5 cm Corpus Luteum Cyst Correct Answer: Progesterone producing ovarian cyst present during pregnancy Hemorrhagic Cyst Correct Answer: Cyst cause from bleeding Tubo-ovarian Abcess Correct Answer: Infected cyst located between the uterus and the ovary. Endometriosis/ Chocolate Cyst Correct Answer: Ectopic endometrial tissue located in the ovary. Cyst appears during the menstrual cycle. Cystadenoma Correct Answer: Mo...