Citation, DOI & article data
Citation:
Radswiki, T., Jones, J. Fetal middle cerebral arterial peak systolic velocity. Reference article, Radiopaedia.org. (accessed on 18 Aug 2022) https://doi.org/10.53347/rID-15508
The fetal middle cerebral arterial (MCA) peak systolic velocity (PSV) is an important parameter in fetal MCA Doppler assessment.
Measurement
The fetal MCA should be sampled~2 mm from the origin of the fetal internal carotid artery and the angle of the ultrasound beam and the direction of blood flow should be 0°. Usually, the highest peak systolic velocity (PSV) value is taken.
Interpretation
- reliable between 18-35 weeks
- increased PSV can indicate moderate-to-severe anemia in non-hydrops fetuses 4
See also
- automatic online fetal MCA PSV calculator from www.perinatology.com (c. 2011)
- 1. Scheier M, Hernandez-andrade E, Carmo A et-al. Prediction of fetal anemia in rhesus disease by measurement of fetal middle cerebral artery peak systolic velocity. Ultrasound Obstet Gynecol. 2004;23 (5): 432-6. doi:10.1002/uog.1010 - Pubmed citation
- 2. Hernandez-andrade E, Scheier M, Dezerega V et-al. Fetal middle cerebral artery peak systolic velocity in the investigation of non-immune hydrops. Ultrasound Obstet Gynecol. 2004;23 (5): 442-5. doi:10.1002/uog.1009 - Pubmed citation
- 3. Mari G. Middle cerebral artery peak systolic velocity: is it the standard of care for the diagnosis of fetal anemia? J Ultrasound Med. 2005;24 (5): 697-702. J Ultrasound Med (full text) - Pubmed citation
- 4. Arias' Practical Guide to High-Risk Pregnancy and Delivery: A South Asian Perspective. Elsevier India. ISBN:B00UHEX9AW. Read it at Google Books - Find it at Amazon
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