chapter 3 Flashcards
What is used to detect underwater sound?
Hydrophone
A technology that uses a computer system to obtain measurement of images, such as fetal biometry, is said to be?
Automated
What is an alteration in the normal structure or number of a chromosome?
Chromosomal anomaly
What mode captures the movement of structures along a single scan line represented over time?
M-mode
Which of the following is not considered a medium through which sound can travel?
Gas
Who has been referred to as the “father of ultrasound”?
Spallanzani
What is the most common element or crystal used within the ultrasound transducer?
Lead zirconate titanate
Who established the pebble theory?
Boethius
What technology does sonography assist in administering radioactive materials close to or within a cancerous tumor?
Ultrasound-guided brachytherapy
Who first recognized the frequency shift that is created when sound impinges upon a moving object?
Christian Doppler
What is the term for an abnormality with which someone is born?
Congenital anomaly
Which of the following would not be an effective standoff device?
Balloon
What ultrasound mode do we use today to acquire routine grayscale images?
B-mode
What type of scanner allows for constant visual imaging of anatomy as if one were watching a movie?
Real-time
Who was the first to use diagnostic ultrasound in the United States?
George Ludwig
What mode displays the depth of the reflector along the y-axis and the strength (amplitude) of the reflector?
A-mode
What technology is used to analyze the relative stiffness of a mass?
Elastography
Triplex imaging includes which of the following?
B-mode, spectral Doppler, and color Doppler
Which testing method utilizes information gathered from one area of the body to predict disease in another part of the body?
Indirect
Which instrument uses ultrasound to detect flaws in metals?
Reflectoscope
