Publications by authors named "Masoud Hejazi"
Aneurysms are localized bulges of arteries; and they can rupture with fatal consequences. Complex mechanobiological factors preclude in vivo testing to assess the rupture risk of an aneurysm, and size based criteria are often used in clinical practice to guide surgical interventions. It is often found that tortuous and buckled aneurysms can exceed the size recommended for surgical intervention, and yet do not rupture.
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- The study aimed to investigate the relationship between aortic tortuosity and abdominal aortic aneurysm (AAA) rupture status using computed tomography images.
- It compared 25 ruptured AAA cases with 31 unruptured cases, both matched for maximal diameter and patient age, finding that unruptured AAAs had significantly greater tortuosity (18.0 mm vs. 9.3 mm).
- The results suggest that higher aortic tortuosity may be linked to a lower risk of rupture, indicating a need for further research with larger sample sizes to confirm these findings.
Article Synopsis
- The study compares the deformation properties of different venous stent designs (braided, chevron, Z, and diamond) through experiments and modeling to assess their clinical effectiveness.
- Self-expanding stainless steel stents show better resistance to collapse than Nitinol stents, making them preferable for conditions like May-Thurner syndrome where force resistance is crucial.
- The braided design offers higher radial pressure for smaller vessels, the Z design minimizes foreshortening for accurate placement, and the semi-analytical method aids in quickly evaluating and optimizing stent designs.