4D flow MRI was used to evaluate flow patterns in 35 and 60 degree one bifurcation PVA phantoms (diameter: 4mm main branch, 3mm branches) with and without resistance in one branch. Multiple spatial resolutions were compared with ink injection and manual measurement for validation. Since computational flow models are frequently used in small vessels, 4D flow was compared with a model. Slow, turbulent flow in the outer side of the bifurcation created eddies where some microrobots get trapped. These eddies were quantitatively and qualitatively characterized with 4D flow. Spatial resolution impacts the accuracy of flow measurement at this scale.
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