1) Determine chorionicity and amnionicity and understand why it is important to do so in all multiple gestations. 2) Understand and diagnose specific complications of monochorionic twinning such as twin to twin transfusion syndrome and twin reversed arterial perfusion. 3) Recognize the indications for more frequent surveillance and intervention in complicated twin pregnancies.
This lecture will review how to determine chorionicity and amnionicity with emphasis on doing so in the first trimester. Monochorionic pregnancies require increased surveillance because of specific complications relating to shared placental vasculature. We will review the imaging findings of twin to twin transfusion syndrome and twin reverse arterial perfusion sequence as the prognosis is very poor if untreated. Early recognition and prompt referral is essential for pregnancy management.
Kennedy, A,
Multiple Gestations. Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL.
http://archive.rsna.org/2014/13010311.html
