sonography Study Guide Questions with
Verified Correct Answers
Ultrasound machine components =
-Display / screen
-control panel & touch screen
-keyboard
-transducer ports
-CPU & storage
-Transducer = probe
Ultrasound is a ___
portable imaging modality
person who does ultrasound =
-sonographer
-diagnostic medical sonographer
-ultrasound tech
ultrasound =
-sound waves with frequencies higher than human hearing
- 2-30 MHz
-non ionizing
US step 1 =
-Electric voltage vibrates transducer elements resulting in production of US waves
-Electrical to Acoustic energy transformation
, US step 2 =
-US waves travel through tissues and are reflected to the transducer
-Reflection
the amount of reflected energy depends on _ and _
-physical properties of tissue
-interfaces between tissues
US step 3 =
-the reflected US energy vibrates the elements and produces electric voltage
-acoustic to electrical energy transformation
US step 4 =
US machine assigns shades of gray depending on the strength of the voltage received
the greater the reflection =
-higher voltage
-brighter shade of gray assigned
the US image is made up of __
hundreds of scan lines
US is a __ imaging modality
dynamic
each "still" image is created & displayed quickly, providing the impression of ___
constant motion (like a movie reel or flipbook)
Echogenicity =
Verified Correct Answers
Ultrasound machine components =
-Display / screen
-control panel & touch screen
-keyboard
-transducer ports
-CPU & storage
-Transducer = probe
Ultrasound is a ___
portable imaging modality
person who does ultrasound =
-sonographer
-diagnostic medical sonographer
-ultrasound tech
ultrasound =
-sound waves with frequencies higher than human hearing
- 2-30 MHz
-non ionizing
US step 1 =
-Electric voltage vibrates transducer elements resulting in production of US waves
-Electrical to Acoustic energy transformation
, US step 2 =
-US waves travel through tissues and are reflected to the transducer
-Reflection
the amount of reflected energy depends on _ and _
-physical properties of tissue
-interfaces between tissues
US step 3 =
-the reflected US energy vibrates the elements and produces electric voltage
-acoustic to electrical energy transformation
US step 4 =
US machine assigns shades of gray depending on the strength of the voltage received
the greater the reflection =
-higher voltage
-brighter shade of gray assigned
the US image is made up of __
hundreds of scan lines
US is a __ imaging modality
dynamic
each "still" image is created & displayed quickly, providing the impression of ___
constant motion (like a movie reel or flipbook)
Echogenicity =
