Mean and peak pressure gradients are an important measure of aortic stenosis severity. In this study, we present a novel method for measuring mean pressure gradients using 4D flow MRI. 4D flow MRI peak and mean pressure gradients were measured in 23 pediatric BAV patients and compared to Doppler echocardiography (echo). There was no significant difference between 4D flow MRI and echo in peak or mean pressure gradients. 4D flow MRI mean pressure gradients correlated better with echo than peak pressure gradients (R2= 0.78 vs. R2=0.27), suggesting 4D flow to be better suited for measuring mean pressure gradients.
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