SPI Mock Exam E16 Questions & Answers 2023/2024

SPI Mock Exam E16 Questions & Answers 2023/2024 What phenomenon is described as the conversion of a pressure wave into electrical voltage - ANSWER-Piezoelectric effect Spatial compounding : - ANSWER-increases signal to noise ratio The range equation is used to determine the - ANSWER-distance to a reflector A large fatty mass is identified in the liver parenchyma. The diaphragm appears to have an irregular border and is difficult to assess in the area posterior to the mass. Why? - ANSWER-Misregistration of anatomy posterior to the mass due to slower speed of sound in fat You are evaluating an obese patient with a known abdominal aortic aneurysm. While using color Doppler to assess flow within the aortic aneurysm , minimal flow is detected in the anechoic lumen. You decrease the color scale and increase the color gain but theres no improvement. Which of the following adjustments will improve the color display on this exam? a. increase color sample size b. increase the color threshold c. decrease the color threshold d. switch from a 4MHz curved array to a 4MHz linear array - ANSWER-increase the color threshold The ________________ contains the memory component of the US system - ANSWER-digital scan converter Which of the following lists the range of the PRF used in real time US imaging - ANSWER-1-10 kHz The amount of energy that is transmitted vs reflected at a media boundary depends on which of the following - ANSWER-amount of difference in acoustic impedance