Echocardiography (part 2) Flashcards
In echo, the gray scale of the image indicates ________________
intensity of the reflected ultrasound
In echo imaging, the black color indicates _____________________
fluid or blood
In echo imaging, the white color indicates _____________________
highly reflective structures (calcifications, cardiac valves, pericardium)
In echo imaging, if the tissue is myocardium it appears ______________
more gray
The muscle in echo imaging appears _______________
unique speckle pattern
TRUE OR FALSE:
Regurgitation can be seen using doppler
TRUE
What are the five basic components of ultrasound scanner?
Pulse generator Transducer Receiver Display Memory
Which component of the ultrasound scanner applies high amplitude voltage to energize pieozoelectric elements?
Pulse generator
What is the function of a transducer/phase array transducer?
it converts electrical energy to mechanical energy or ultrasound and vice versa
What is the function of the receiver?
it detects and amplifies weak signals
This component displays ultrasound signals in variety of modes
Display
What is the function of memory in echo?
it stores the video display
What should be included in the report of echo?
Rate of heartbeat evaluation of size description of pericardium thickness of heart conclusion of function of ventricles evaluation of shape and movement of valves comment on any blood clots unexpected findings comment on quality of image
What is the disadvantage of echocardiography?
it does not visualize the coronary arteries of blockage in the coronary arteries
What is used to visualize coronary arteries?
Coronary angioplasty
