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SPI Chapter 13

Real-Time Imaging

QuestionAnswer
What is static scanning? images displayed one frame at a time
What is frame rate? frames per second
What is frame rate determined by? sound's speed in medium and imaging depth
What is the unit for frame rate? hertz (Hz)
What is temporal resolution? accuracy in time
What is temporal resolution determined by? the frame rate
What is unit for temporal resolution? hertz (Hz)
What is frame rate inversely related (reciprocals) to? time of frame (temporal)
What are two sonographer-controlled settings o an ultrasound system? imagining depth and number of pulses in each picture
What two things are frame rate inversely related to? imaging depth and pulses per frame
What are three factors that determine the number of pulses per frame? number of focal points, sector size, line density
What is the main advantage of multi-focus? better lateral resolution
What is sector size? more pulses required to create an image, temporal resolution decreases
What is field of view inversely related to? frame rates
What is line density? spacing between sound beam
What is line density inversely related to? frame rate
What is the main advantage of high line density? improved spatial (detail) resolution
Created by: Lazacha
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