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A member asked:

I want to known any screening exam to rule out down syndrome? when is the best to check it? or only 4d ultrasound can help?

A doctor has provided 1 answer
Dr. Lori Semel answered

Specializes in Pediatrics

Depends: on what gestational age the fetus is at. The quad screen can predict risk of Downs Syndrome in conjunction with ultrasounds.Needs to be done between the 15th and 20th week of pregnancy.

Dr Juchau agreed

Answered 8/10/2014

3.8k views

Thank

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A member asked:

39F Had carotid Ultrasound screening. The right ICA peak systolic velocity is 84.00 cm/sec. The left ICA peak systolic velocity is 80.00 cm/sec. What do those measures mean? Are higher or lower numbers better here? Thank you?

A doctor has provided 1 answer

A member asked:

42M Had carotid Ultrasound screening. The right ICA peak systolic velocity is 57.00 cm/sec. The left ICA peak systolic velocity is 74.00 cm/sec. What do those measures mean? Are higher or lower numbers better here? Why are readings so far apart? Thx?

A doctor has provided 1 answer

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