Ultrasound Physics Introduction

What is the assumption made by the ultrasound machine about the speed of sound in tissues?

What type of artifact is characterized by a complete absorption or reflection of sound waves?

What is the result of the machine processing compensating for the reduced attenuation of sound waves through a fluid-filled structure?

What type of artifact is commonly seen at the tissue-gas interface?

What is the assumption made by the ultrasound machine about the direction of sound waves?

What is the result of the sound wave being reflected or absorbed by an object, resulting in a shadow?

What is the cause of a false sludge image in the gall bladder?

What is the primary function of the Piezo electrical crystals in a transducer?

Which type of transducer is used for echocardiology and produces a pie-shaped image?

What is the recommended frequency for imaging small dogs and cats?

What is the result of the sound beam hitting the liver and then being reflected back to the diaphragm-lung interface before going to the transducer?

What is the general rule for selecting the frequency of a transducer during an exam?

What is the term used to describe the number of times a cycle or wave is repeated per second in ultrasound physics?

What happens to sound waves as they travel through a medium in ultrasound physics?

What is the term used to describe the distance traveled by sound waves in ultrasound physics?

What is the term used to describe the ability to detect two structures separately located in a parallel beam in ultrasound physics?

What happens to sound energy in the process of absorption in ultrasound physics?

What is the result of sound waves encountering tissues of different acoustic impedance in ultrasound physics?

What is the purpose of the Time Gain Compensation control?

What does the 'Focus' control on the ultrasound machine adjust?

What is the purpose of the acoustic gel in ultrasound imaging?

What is the purpose of the 'Power' control on the ultrasound machine?

What does the 'M-mode' of echo display record images in respect to?

What is the purpose of the 'Doppler mode' of echo display?

What is the direction of the transducer in a sagittal plane?

What is evaluated in the transverse plane?

What is the echogenicity of a pure fluid without cellular content?

What is the direction of the transducer in a transverse plane?

What is evaluated in addition to the size, shape, number, location, and margination of a structure?

What is the recommended scanning technique?