The pw signal that is - Study guides, Class notes & Summaries

ARDMS SPI Study Guide Questions and Answers 2023 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. True Typically, the sonographer can adjust the compression function of a receiver. True Mean frequency is calculated from weighted sum of frequencies in the power spectrum. True Refraction always occurs at the interface between two media ...

low cardiac output = high cardiac output = - ANSWER-low heart rate, low output high heart rate, high output low peripheral resistance = high peripheral resistance = - ANSWER-high flow rate low flow rate The PW signal that is displayed comes from? - ANSWER-The part it is supplying thicker blood flow moves more slowly (high resistance =) - ANSWER-viscosity (low flow, increased in pressure) increased hematocrit (volume of red blood cells) = - ANSWER-decreased flow Causes of hi...

ARDMS - SPI Study Questions and Answers 2023 Which technique utilizes frequency modulation of the transmitted pulse to improve signal to noise ratio? spatial compounding Which angle of isonation to blood flow produces the maximum doppler shift? 180 degrees Which imaging mode requires two elements mounted side by side? continuous wave doppler What is a benefit of using contrast agents? increased amplitude of the returning dopplers What is the most common cause of ...

ARDMS SPI - Mock Exam Questions and Answers 2023 Materials used for the matching layer of a transducer must have an impedance between impedance levels of the ______________ skin and PE element Which of the following is an abnormality that would lead to an imcrease in the Reynolds number? 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 ____________ bone The speed of sound is...

This converter converts the numbers stored in memory to proportional voltages that control the brightness on a CRT monitor CORRECT ANSWERS: Digital to Analog Converter The Digital Scan Converter is AKA: CORRECT ANSWERS: Image Memory This is where images are stored in the ultrasound system: CORRECT ANSWERS: Scan Converter The system component which is most responsible for transmit focusing: CORRECT ANSWERS: Beam Former The process of filling in the empty spaces between scan lines:...

ARDMS - SPI Study Questions with Complete Solutions Which technique utilizes frequency modulation of the transmitted pulse to improve signal to noise ratio? spatial compounding Which angle of isonation to blood flow produces the maximum doppler shift? 180 degrees Which imaging mode requires two elements mounted side by side? continuous wave doppler What is a benefit of using contrast agents? increased amplitude of the returning dopplers What is the most common cause of localized vertical no...

URR mock test 2 correctly answered 2023The sonographer may avoid aliasing by altering the: A. increasing the sample volume length B. transmit gain C. image depth D. increasing the frequency image depth Which of the following beam intensity values is used to assess potential patient exposure? A. SATP B. SPTA C. SPTP D. SATA SPTA Which of the following statements is true regarding the differences between a vector array compared to a phased sector array? A. The vector arr...

IBHRE Study set Questions and Answers 2023 What lead insulation materials are known for reducing fibroblast in growth and susceptibility to MIO and ESC? ePTFE and 80A polyurethane What are the two most common causes of ventricular safety pacing ? Ventricular ectopy and loss of atrial sensing What electrode material would most likely result in higher pacing thresholds and high polarization? Elgiloy Which phase of the action potential would correlate to the relative refrac...

What is frequency determined by? - Answer- The source, thickness of piezoelectric element and propagation speed to a lesser degree Thicker element is equal to ________ frequencies - Answer- Lower What is the reciprocal of frequency and what is the symbol - Answer- Period, T The time it takes for 1 cycle to occur - Answer- Period What is propagation speed determined by - Answer- Stiffness and density of the medium Propagation speed of sound through soft tissue - Answer- 1,540 m/s ...

CCI ARDMS practice test Questions and answers, Graded A+, latest updates On an apical 4 chamber view, if you move the color Doppler sample box from the mitral level to the pulmonary veins, _______________. A. the PRF increases B. temporal resolution will increase C. the frame rate decreases D. the sample size should be increased for better pulmonary venous flow evaluation - c. the frame rate decreases Which of the following procedures can be performed during a left heart cathet...