PAT105 Wk 2
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46 Terms
What is the average speed at which sound travels through soft tissue?
1540 m/s
Who is considered the father of acoustics?
Maron Mersenne
What is acoustics?
The scientific study of sound.
What theory did Boethius develop to visualize sound waves?
Pebble theory.
What does Robert Boyle's research emphasize about sound propagation?
There must be a medium through which sound can travel.
What is a coupling agent in ultrasound?
A substance, like gel or water, that allows sound to travel through mediums.
What is the Doppler effect?
The change in pitch of a sound wave when the source of the sound is moving.
What did the Currie brothers discover?
The piezoelectric effect.
What was the first application of ultrasound in medical diagnosis?
In 1941 by Karl Dussik to image lateral ventricles in the brain.
What mode represents strength of the returning echo on the y-axis in ultrasound?
A-mode (amplitude mode).
What is B-mode in ultrasound?
Brightness mode, which displays returning ultrasound signals as dots with varying brightness.
What is the main purpose of tissue harmonic imaging?
To eliminate artifactual frequencies from varying human body tissues.
What does 4D imaging provide in ultrasound?
Real-time imaging in 3D, adding the dimension of time.
What are the three regulatory pillars of the professional environment in sonography?
Academic accreditation, national certification, and laboratory accreditation.
What is the primary certifying agency for sonography?
American Registry for Diagnostic Medical Sonography (ARDMS).
What is the required CME for maintaining ARDMS certification?
30 approved credits every 3 years.
What is the focus of ergonomics in sonography?
The scientific design of tools and equipment to fit human anatomy and work flow.
What is a common site of WRMSDs among sonographers?
Shoulder, with 84% reporting issues.
What is recommended to promote ergonomic practices among sonographers?
Good scanning techniques, proper equipment and chair design, and regular rest breaks.
What are the warning signs of potential WRMSDs?
Tingling hands, self-massage habits, persistent aches, and nocturnal pain.
What are some of the common pathologies associated with nerve entrapment in sonographers?
Tendinitis, tenosynovitis, and bursitis.
What is the average speed at which sound travels through soft tissue?
1540 m/s
Who is considered the father of acoustics?
Maron Mersenne
What is acoustics?
The scientific study of sound.
What theory did Boethius develop to visualize sound waves?
Pebble theory.
What does Robert Boyle's research emphasize about sound propagation?
There must be a medium through which sound can travel.
What is a coupling agent in ultrasound?
A substance, like gel or water, that allows sound to travel through mediums.
What is the Doppler effect?
The change in pitch of a sound wave when the source of the sound is moving.
What did the Currie brothers discover?
The piezoelectric effect.
What was the first application of ultrasound in medical diagnosis?
In 1941 by Karl Dussik to image lateral ventricles in the brain.
What mode represents strength of the returning echo on the y-axis in ultrasound?
A-mode (amplitude mode).
What is B-mode in ultrasound?
Brightness mode, which displays returning ultrasound signals as dots with varying brightness.
What is the main purpose of tissue harmonic imaging?
To eliminate artifactual frequencies from varying human body tissues.
What does 4D imaging provide in ultrasound?
Real-time imaging in 3D, adding the dimension of time.
What are the three regulatory pillars of the professional environment in sonography?
Academic accreditation, national certification, and laboratory accreditation.
What is the primary certifying agency for sonography?
American Registry for Diagnostic Medical Sonography (ARDMS).
What is the required CME for maintaining ARDMS certification?
30 approved credits every 3 years.
What is the focus of ergonomics in sonography?
The scientific design of tools and equipment to fit human anatomy and work flow.
What is a common site of WRMSDs among sonographers?
Shoulder, with 84% reporting issues.
What is recommended to promote ergonomic practices among sonographers?
Good scanning techniques, proper equipment and chair design, and regular rest breaks.
What are the warning signs of potential WRMSDs?
Tingling hands, self-massage habits, persistent aches, and nocturnal pain.
What are some of the common pathologies associated with nerve entrapment in sonographers?
Tendinitis, tenosynovitis, and bursitis.
What is a longitudinal wave?
A wave in which the particles of the medium oscillate in the same direction as the wave propagation.
What is frequency?
The number of cycles or oscillations per unit of time, measured in Hertz (Hz).
What is ultrasound?
Sound waves with frequencies above the range of human hearing, typically above 20000Hz.
What is the main component within an ultrasound transducer that produces and receives sound waves?
The piezoelectric crystal.