Aortic disease and aortopathy
Aortic disease and aortopathy include dilation, aneurysm, dissection risk morphology, congenital aortic valve-associated aortopathy, coarctation-related remodeling, and stiffness changes. CardiacNexus separates aortic structure from aortic distensibility so readers can inspect geometry and elasticity independently.
- Modality
- Scout/localizer, LVOT cine, aortic distensibility cine, phase-contrast flow
- Pipeline step
- Clinical interpretation
- Outputs
- Aortic diameter, geometry, root, flow, and distensibility phenotypes
- Maturity
- Clinician review draft
What clinicians look for
Readers usually inspect ascending, arch, and descending diameters; aortic-root and annular dimensions; tortuosity, curvature, and arch geometry; distensibility; flow eccentricity; and valve phenotype context. Aortic size should be interpreted with body size, age, sex, and acquisition plane [1].
Relevant CardiacNexus phenotypes
| Phenotype page | Measurements to inspect | Interpretation role |
|---|---|---|
| Aortic structure | Diameters, arch width/height, tortuosity, curvature | Geometry and morphology |
| Aortic stiffness and distensibility | Area extrema, distensibility | Elasticity and pressure-normalized area change |
| Valvular and flow phenotypes | Root, annulus, valve area, velocity, flow displacement | Valve-aorta coupling |
| Ventricular structure | LV volumes and sphericity | Downstream remodeling |
| Myocardial mass and wall thickness | LV mass and wall thickness | Pressure-load context |
Interpretation patterns
Bicuspid aortic valve, coarctation, Marfan syndrome, and dissection cohorts can show altered aortic dimensions and geometry. Distensibility may be abnormal even when size is not markedly enlarged, and dilation can occur with variable stiffness.
Limitations
Scout-derived geometry is sensitive to segmentation extent and centerline extraction. Distensibility depends on pressure availability and segmentation through the cardiac cycle. Do not treat a single diameter or stiffness value as a surgical threshold without clinical guideline context.
Source audit
- Draft primer checked against promoted aortic structure, aortic stiffness/distensibility, valvular/flow, ventricular, and myocardial mass pages.
- Aortic disease wording is limited to geometry, stiffness, and valve-aorta coupling context; CardiacNexus does not emit surgical thresholds or aortopathy diagnoses.
docs/data/reference_sources.ymlexists and is the current registry for aortic scout geometry, aortic-root, aortic-size, and distensibility context sources.- Textbook context boundary: broad Braunwald/Hurst aortic-disease background was treated only as clinical context; dedicated aortic geometry, CMR aortic-root, and distensibility sources are sufficient for draft rollout.
- Textbook route checked: Braunwald Diseases of the Aorta, printed pages 261-289. It supports broad disease framing only; the public interpretation rows remain grounded in CMR aortic-root, aortic-size, distensibility, and geometry sources.
References
- Burman ED, Keegan J, Kilner PJ. Aortic Root Measurement by Cardiovascular Magnetic Resonance: Specification of Planes and Lines of Measurement and Corresponding Normal Values. Circulation: Cardiovascular Imaging. 2008;1(2):104-113.
- Redheuil A, Yu WC, Mousseaux E, Harouni AA, Kachenoura N, Wu CO, Bluemke D, Lima JAC. Age-Related Changes in Aortic Arch Geometry. Journal of the American College of Cardiology. 2011;58(12):1262-1270.
- Beeche C, Dib MJ, Zhao B, Azzo JD, Maynard H, Duda J, Gee J, Salman O, Witschey WR, Chirinos JA. Three-dimensional aortic geometry: clinical correlates, prognostic value and genetic architecture. bioRxiv. 2024.