SPI ultrasound physics review questions with correct answers

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 Increasing the stiffness of a tissue does what to the propagation speed? - Answer Increases Increasing the density of a tissue does what to the propagation speed? - Answer Decreases Propagation speed of tissues from slowest to fastest - Answer Air, fat, water, liver, blood, muscle, bone