Spi artifacts Study guides, Class notes & Summaries

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...

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...

SPI Practice (ARDMS A & B) Exam 79 Questions with Verified Answers C - CORRECT ANSWER What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A - CORRECT ANSWER to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B - CORRECT ANSWER which im...

URR SPI questions answered correctly latest 2023what is an artifact echo that do not correspond actual with anatomy, not in right location, size or shape, Too bright or dark, missing from image completely. propagation artifacts occur due to bending (refraction), redirection (reflection) or reverberation of sound.` what is degraded in propagation artifacts lateral resolution reverberation is caused by repeated reflection of ultrasound back and forth between two closely sp...

SPI ARDMS QUESTIONS AND ANSWERS 2023 What type of wave is sound? mechanical and longitudinal The frequency ranges for ultrasound are: >20 kHz The speed of sound in soft tissue is: 1540 m/s which of the following transducers fires the elements in groups? A. Linear sequenced array B. Phased array C. Continuous-wave transducer D. Single-element transducer A Enhancement is caused by** weakly attenuating structures wavelength in material having a propag...

While using a linear sequential array transducer during a color Doppler exam, the shape of the grayscale image is most often _______, Whereas the shape of the color Doppler portion of the image is _______. A. rectangular, parallelogram B. rectangular, sector C. sector, trapezoid D. square, rectangular Correct Answer: A. rectangular, parallelogram The shape of a grayscale image using a linear sequential array is rectangular. However, the sound beams used for Doppler are steered at an an...

DAVIES SPI: III. Ultrasound Transducers (20% of ARDMS) Questions and Answers 2023 This image was obtained with a linear array transducer. The trapezoidal field of view increases the field of view. How is the trapezoidal shape created? See image for question #244 A. Electronic beam steering B. Side lobes C. Grating lobes D. Mechanically steering the elements E. Mirror A. Electronic beam steering <A trapezoidal image can be obtained with a linear array transducer by electronically ...

CAPM Practice Exam 430 Questions with Verified Answers D. Throughout the project lifecycle - CORRECT ANSWER When should Project Risk Management be conducted? A. Project Planning B. Monitoring and Controlling C. Quality Planning D. Throughout the project lifecycle B. procurement strategy - CORRECT ANSWER Once the make-or-buy analysis is completed, which document defines the project delivery method? A. Procurement statement of work (SOW) B. Procurement strategy C. Terms of refere...

SPI Practice Questions #1, All Quizzes and answers. 100% Accurate. Graded A+. B. The absence of echos Question 1 Explanation: An (without) echoic (producing echoes) - 1. The term Anechoic in relation to a sonographic image means? A. structure that appears lighter than the surrounding structures B. The absence of echos C. A structure that appears the same as surrounding structures D. A structure that reflects 100% of the sound wave C.The system with the larger diameter crystal. - 2...

SPI Board Exam Review (GB) 600+ Complete Q&A (2022/2023.) __________ is the reciprocal of period. A. inverse period B. PRP C. frequency D. propagation speed - C. Frequency A bouquet has 30 flowers. The size of the bouquet is decreased by a factor of 3. How many flowers remain? A. 27 B. 0 C. 10 D. 15 - C. 10 A byte is composed of __ bits. A word is composed of ___ bytes. A. 2, 2 B. 8, 2 C. 16, 16 D. 8, 16 - B. 8, 2 (a string of eight bits of computer memory is a byte. Two b...