RIU 324 Lecture Notes - Lecture 21: Lookup Table, Color Mapping, Grayscale

• School: GVSU
• Department: Radiation and Imaging - Ultrasound
• Course: RIU 324
• Professor: Angela Malone

Document Summary

15: color doppler: aka: color flow imaging, color flow doppler, color doppler imaging cdi, color velocity imaging, energy doppler, power doppler, color represents velocity (color doppler) or signal level (power. Doppler shift: spatial flow patterns c, color doppler, cfi (using autocorrelation) is displayed in a large roi to help us see flow patterns and temporal changes, since it provides location of flow, cdi: Is a pulsed ultrasound technique i: has range resolution (range specificity) iii. Increased sensitivity to low flow: disadvantages of longer ensemble length, more time to acquire data ii. Left is for laminar: determining flow direction: sector image d. e, bart (blue away, red toward): examine color map b. c, place your finger on toward color and slide to away color. This is the direction of flow e: determining flow direction: rectangular image, look at top 2 corners of color box, find the corner that does not intersect color if you follow an imaginary line straight down (home)