Diagnostic Sonography Ch 1-4 Exam with Complete Solutions

Diagnostic Sonography Ch 1-4 Exam with Complete Solutions Diagnostic Sonography Ch 1-4 Exam with Complete Solutions Diagnostic Sonography Ch 1-4 Exam with Complete Solutions Diagnostic Sonography Ch 1-4 Exam with Complete Solutions Historically, the development of ultrasound began shortly after ______. - ANSWER-sonar in world war II The early application of obstetric ultrasound was initiated by who? - ANSWER-Ian Donald Visualization of the cardiac structures in the heart was discovered by ___________. - ANSWER-Hertz and Elder Which of the following statements about the role of sonographers is false? a) Sonographers must have a technical aptitude, b) sonographers must be able to communicate on different levels, c) sonographer must possess intellectual curiosity, d) sonographers perform ultrasound studies and gather diagnostic data independent of the physician. - ANSWER-sonographers perform ultrasound studies and gather diagnostic data independent of the physician. In soft tissues, the assumed propagation velocity is ______ m/s. - ANSWER-1540 The diagnostic ultrasound uses the frequencies of ______. - ANSWER-1-20 MHz What defines the correct dynamic range? - ANSWER-Ratio of the largest to the smallest signals that an instrument can respond to without distortion The device that converts energy from one form to another is called ______. - ANSWER-transducer The ______ is the product of the velocity of sound in a medium and the density of the