Ch. 19 (Advantages/Disadvantages)

ability to accurately measure very high velocities is an advantage of

CW doppler

the exact location of the moving blood cells cannot be determined is a disadvantage of

CW doppler

lack of time gain compensation is a disadvantage of

CW doppler

being able to select the exact location where velocities are measured (range resolution/specificity, freedom from range ambiguity) is an advantage of

PW doppler

inaccurate measurements of high velocity signals is a disadvantage of

PW doppler

more accurate velocity measurement and increased sensitivity to low flow are advantages of

doppler packet/ensemble length

more time needed to acquire data is a disadvantage of

doppler packet/ensemble length

reduced frame rate and decreased temporal resolution are disadvantages of

doppler packet/ensemble length

increased sensitivity to low flow or velocity, such as venous flow or flow in small vessels is an advantage of

power doppler

unaffected by doppler angles (unless it’s exactly 90 degrees) is an advantage of

power doppler

no aliasing since velocity info is ignored is an advantage of

power doppler

no measurement of velocity or direction is a disadvantage of

power doppler

lower frame rates (reduced temporal resolution) than conventional color flow doppler is a disadvantage of

power doppler

susceptible to motion of the transducer, patient, or soft tissues, which may result in a burst of color or flash artifact is a disadvantage of

power doppler