Hemodynamic evaluation using four-dimensional flow magnetic resonance imaging for a patient with multichanneled...

Area of Science:

• Cardiovascular Imaging
• Medical Physics
• Vascular Surgery

Background:

• Multichanneled aortic dissection (MCAD) presents complex hemodynamic challenges requiring precise monitoring.
• Effective management strategies are crucial to prevent severe complications associated with MCAD.

Observation:

• A 47-year-old male patient with MCAD was evaluated using four-dimensional (4D) flow magnetic resonance imaging (MRI).
• 4D flow MRI revealed intricate, bidirectional flow within false lumens and high-velocity flow in the compressed true lumen.

Findings:

• Initial endovascular repair of the primary tear inadequately restored true lumen expansion.
• Subsequent remodeling with bare stents was necessary to address the persistent true lumen collapse.

Implications:

• Hemodynamic analysis via 4D flow MRI provides critical insights into the pathophysiology of MCAD.
• This advanced imaging modality can guide therapeutic interventions for complex aortic dissections.