Final answer:
Continuous wave doppler is the technique that allows you to assess the severity of aortic regurgitation.
Step-by-step explanation:
The technique that would allow you to assess the severity of aortic regurgitation is continuous wave doppler. Continuous wave doppler is a type of Doppler ultrasound that measures blood flow velocity through the aortic valve.
By using continuous wave doppler, the severity of aortic regurgitation can be determined by analyzing the flow profile and the presence of a regurgitant jet.