Harmonics Study guides, Class notes & Summaries

What is the Equal Loudness Principle? : The ear is much more sensitive to mid-range frequencies than low and high frequencies at low volumes. As volume increases, the curve of our hearing flattens out so we hear all frequencies equally (around 85db). However, our ears become more sensitive to highs and lows once volume increases past this point. What is amplitude? : The height/vertical distance of a sound wave. It determines the volume of the sound. What is frequency and what is it mea...

The peak velocity of aortic regurgitation indicates the maximum pressure gradient between: the aorta and the LV in systole the aorta and the LV in diastole the LV and the LA in diastole the LV and the LA in diastole - correct answer the aorta and the LV in diastole Which type of image resolution improves with proper placement of the focal zone at the area of interest? temporal lateral contrast elevational - correct answer Lateral The tissue of the interventricular sep...

I. OBJECTIVE To study the behaviour of oscillations (Simple Harmonic Motion) in situation where there is resistive force of fluid investigated by study of exponential amplitude decay in the fluid as compared to relatively undamped environment of air. II. HYPOTHESIS During Simple Harmonic Motion (SHM) in damped fluid environment amplitude of oscillation decreases exponentially. And the rate of amplitude decay depends on viscosity of fluid medium. III. THEORY Simple Harmonic Motion (SHM), is...

When an organ transplant is being evaluated by ultrasound: a. a 60 degree cursor angle must be used on all vessels b. harmonic imaging should not be used due to increased beam intensity c. the resistive index should be assessed at several locations in the allograft d. power doppler imaging should not be used due to increased beam intensity Correct Answer C The splenic artery distributes blood to the__________ a. stomach b. pancreas c. spleen d. all the above Correct Answer D Th...

RCRD 3005 Audio Eng Final Review Questions with 100% Verified Correct Answers What is the Equal Loudness Principle? - Correct Answer The ear is much more sensitive to mid-range frequencies than low and high frequencies at low volumes. As volume increases, the curve of our hearing flattens out so we hear all frequencies equally (around 85db). However, our ears become more sensitive to highs and lows once volume increases past this point. What is amplitude? - Correct Answer The height/vertical...

What action below would be most in keeping with the ALARA principle while performing a diagnostic ultrasound examination? A: Allow multiple students to scan an obstetrical patient because the fetus is in a good position for imaging. B: Prolong the sonogram to make videos of the fetus for each family member. C: Complete the diagnostic scan in a timely fashion at the lowest output power that achieves a quality image. D: Maximize the acoustic output to brighten the overall image. E: Extend...

The benefits of knowing acoustics & using acoustic measures - ACCURATE ANSWER1. Overcome listener bias 2. Describe severity objectively 3. Tracking progress overtime 4. Provide biofeedback The nature of science - ACCURATE ANSWER- the scientific method 1. Empirical - based on data 2. Deterministic - obeys physical laws 3. Predictive - if you do this, then that will happen 4. Parsimonious - uses the simplest explanation possible Reasons for using technology in clinical practice ...

Breast Davies Review Rated A+ 2024 which artifact may cause structures to look deeper than they actually are? A. side lobe B. shadowing C. refraction D. propagation speed error E. slice thickness ️D. propagation speed error the optimum operating frequency for a broad-bandwidth transducer would be: A. 6 MHz B. 7 MHz C. 8 MHz D. 9 MHz E. 10 MHz ️C. 8 MHz in breast sonography, which of the following is NOT significantly affected by the limited field of view when imag...

Davies Breast ARDMS Rated A+ 2024 Which artifact may cause structures to look deeper than they actually are? A. Side lobe B. Shadowing C. Refraction D. Propagation speed error E. Slice thickness D. propagation speed error The optimum operating frequency for a broad-bandwidth transducer would be: A. 6 MHz B. 7 MHz C. 8 MHz D. 9 MHz E. 10 MHz C. 8 In breast sonography, which of the following is NOT significantly affected by the limited field of view when imaging...

CCI RCS Registry –URR Exam Questions and Answers 100% Pass The peak velocity of aortic regurgitation indicates the maximum pressure gradient between: the aorta and the LV in systole the aorta and the LV in diastole the LV and the LA in diastole the LV and the LA in diastole - Correct Answer ️️ -the aorta and the LV in diastole Which type of image resolution improves with proper placement of the focal zone at the area of interest? temporal lateral contrast elevational - Correct...