AI Article Synopsis

  • The study investigates the geometric features of the thoracic aorta to identify a morphological marker for aortic dissection (AD).
  • It analyzes CT angiograms from 63 AD patients and 71 healthy individuals, using a fitting circle method to compare aortic shapes.
  • Results reveal that the thoracic aorta in healthy subjects resembles a circle more closely than in AD cases, indicating that aortic deformation can serve as a significant indicator of aortic dissection.

Article Abstract

Background: This study aims to identify a morphological indicator of aortic dissection (AD) based on the geometrical characteristics of the thoracic aorta.

Methods: We evaluated computed tomographic angiograms of 63 samples with AD (22 with type A AD, 41 with type B AD) and 71 healthy samples. Via centerline extraction and spatial transformation, the spatial entanglement of the aorta was minimized, and the expanded 2D aortic morphology was obtained. The 2D morphology of the thoracic aorta was fit to a circle. The applicability of the fitting circle method for identifying aortic dissection was verified by multivariable logistic regression analysis.

Results: Via the 3D coordinate transformation algorithm, the optimal aortic view was obtained. On this view, the geometrical characteristics of the thoracic aortas of the healthy controls were similar to a portion of a circle (sum of residuals: 3502.45 ± 2566.71, variance: 86.23 ± 56.60), while that of AD samples had poorer similarity to the circle (sum of residuals: 5404.78 ± 3891.69, variance: 129.90 ± 90.09). This difference was significant (p < 0.001). A logistic regression model showed that increased deformation of the thoracic aorta was a significant indicator of aortic dissection (odds ratio: 1.35, p = 0.034).

Conclusions: The morphology of the healthy thoracic aorta could be fit to a circle, while that of the dissected aorta had poorer similarity to the circle. The statistics of the circle are an effective indicator of aortic deformation in AD.

Trial Registration: This study is registered in the Chinese Clinical Trial Registry (ChiCTR2000029219).

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11351444PMC
http://dx.doi.org/10.1186/s12872-024-04130-4DOI Listing

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