Ultrasound Study guides, Class notes & Summaries

Ultrasound Questions and Answers 2023 What is anechoic? .structure that does not produce echoes E.g. lumen of blood vessels,bladder (appear black) What is Echogenic? .structure that produces echoes, appears white E.g. surface of bone What is Hyperechoic? .structure that produces strong echoes compared to surrounding structure (appears white) What is Hypoechoic? .structure that produces weak echoes .compared to surrounding structure (appears dark grey) ...

Ultrasound- Radiology Questions and Answers 2023 What is the relationship between ultrasound transducer frequency and imaging depth? The lower the frequency the greater the depth. The higher the frequency the less depth, but greater resolution. What is the pulse echo principle? A short burst of sound is sent into tissues that is reflected at tissue interfaces and then returned to transducer for detection Which of the following is affected by the medium in which its traveling thr...

Ultrasound Questions and Answers 2023 acoustic Ultrasound is a form of what type of energy? acoustic energy propagation of vibratory motion through a material or tissue 20,000 to 3,000,000 Hz What is the range of ultrasonic wave frequencies? quartz crystal The vibration of what, produces ultrasound, when subject to a high frequency alternating current? the same The quartz crystal that produces ultrasound waves vibrates at __________ frequency as the imposed alte...

Basics of Ultrasound Questions and Answers 2023 Audible range 20 Hz- 20,000 Hz Ultrasound frequency range above 20,00 SONAR measurement of ultrasound echoes in distances SCANS using ultrasound to see inside objects Infrasound anything below 20 hz -inaudible to humans - Earth quakes waves -Some Large animals like elephants How does ultrasound make image vibrates organs,tissues, and cells ultrasound imaging -speed of wave Ultrasound vibrat...

Ultrasound Questions and Answers 2023 - high frequency sound waves beyond the range of hearing (20 Hz-20 KHz) What is ultra sound? mechanical energy as sound waves are transmitted through a patient (tissues) and returning echoes are detect what is the physics of ultrasound? - a constant velocity of sound within soft tissue even though differences - the speed of sound in all body tissues is 1540m/s - the ultrasound beam only travels in a straight line with a constant rate of at...

Ultrasound Questions and Answers 2023 How does the ultrasound work? Ultrasound machines conduct sound waves through transducer probes; these waves travel from the probe into the body, bounce off of body tissues and structures and reflect back to the probe. The probe contains specialized crystals to send and receive specialized sound waves. The sound echoes that return to the probe, are translated into a picture by a computer, the computer projects a grayscale image on to the screen. The freque...

Ultrasound physics Ch.15-17 Questions and Answers 2023 Bistable composed of only 2 shades: black and white (high contrast) Gray scale multiple levels of brightness, allows the system to assign different gray shades to differentiate biologic tissues Controls which alter characteristics of displayed images 1) contrast: determines the range of brilliances (bistable images which are only black and white are high contrast) 2) brightness: determines brilliance of the displayed image...

Ultrasound Physics definitions Questions and Answers 2023 A mode Mode of operation in which the display records a spot deflection for each echo delivered from the receiver (no longer used) Absorption Conversion of sound to heat Acoustic Having to do with sound Acoustic variables Pressure, density, temperature and particle motions: things that change with location and time in a sound wave Aliasing Improper Doppler shift information from a pulsed doppler or color ...

Vet Tech Ultrasound Questions and Answers 2023 Ultrasound Sound waves with frequencies above 20,000 Hz. Real time images Cine loop a continuous feed that allows you to do a recording of what is being visualized at that time Cardiac studies What are ultrasounds most beneficial in? Move the diagnostic probe in any direction What is one of the benefits of having an ultrasound? False True or false? Safety precautions required when using ionizing radiation include fu...

Ultrasound Practice Questions and Answers 2023 Ultrasound velocity is higher in denser tissue? True/False True When individual ultrasound waves combine, the process is called 1. Attenuation 2. Interference 3. Diffusion 4. Reflection 2. Interference When ultrasound waves return directly after interacting with an interface, the process is called 1. Attenuation 2. Interference 3. Diffusion 4. Reflection 4. Reflection The conversion of mechanical impulses (sound w...