Keywords: Fetal, Fetus, 4D flow
Motivation: Fetal 4D flow provides useful information related to cardiovascular structure and function, but its reliability is not yet defined.
Goal(s): Here, we seek to define the accuracy, precision, internal consistency, and repeatability of fetal 4D flow.
Approach: Pregnant women in their third trimester with healthy developing fetuses (N=22) and fetuses with suspected cardiovascular anomalies (N=12) were scanned with 2D phase contrast and 4D flow sequences. Quantitative flow metrics were compared.
Results: 4D flow underestimated net flow in the great vessels relative to 2D-PC, but had reasonable precision, internal consistency, and repeatability. Fetal 4D flow can reliably measure percentage contributions from various vascular territories.
Impact: Fetal 4D flow allows for quantitative hemodynamic evaluation of the fetal cardiovascular system with good precision, internal consistency, and repeatability. Flow was underestimated relative to 2D-PC, therefore presently percent contribution from various vascular territories is the most appropriate clinical endpoint.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords