ARDMS SPI Exam| 60 QUESTIONS| ANSWERS 100% CORRECT

ARDMS SPI Exam| 60 QUESTIONS| ANSWERS 100% CORRECTWhich gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain Correct Answer: 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 Answer: 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 Answer: b. turbulent flow With pulse wave Doppler axial resolution: Correct Answer: degrades What color is usually use in color flow Doppler variance map to indicate turbulent flow? Correct Answer: green Doppler high pass filter eliminates: Correct Answer: high amplitude signals; low velocity flow The Doppler wall filter is considered a: Correct Answer: high pass filter The Nyquist Limit is equal to: a. propagation speed x frequency b. propagation speed/ wavelength c. PRF/2 d. 4xV^2 Correct Answer: c. PRF/2 Multiple echoes, equally spaced originating from a gas bubble is called: a. comet tail b. ring down c. slice thickness artifact d. multipath Correct Answer: b. ring down An increase in red blood cell velocity will the Doppler Shift: a. increase b. decrease c. not change d. cannot be predicted Correct Answer: a. increase The primary advantage of CW Doppler is: a. range resolution b. range discrimination c. range ambiguity d. range gating e. absence of sampling rate Correct Answer: e. absence of sampling rate The range for ultrasound begins: a. 20 Hz b. 20,000 Hz c. 2 MHz d. 15 MHz Correct Answer: b. 20,000 Hz (useful frequency range for clinical imaging is 2MHz-10MHz)