id	keyword
cana-3718	noise
cana-3718	ultrasound
cana-3718	image
cana-3718	nlm
cana-3718	speckle
cana-3718	reduction
cana-3718	filter
cana-3718	imaging
cana-3718	medical
cana-3718	methods
cana-3718	processing
cana-3718	optimization