ArticleThe Egyptian heart journal : (EHJ) : official bulletin of the Egyptian Society of Cardiology2022
Aortic valve calcium volume as measured by native versus contrast-enhanced computer tomography and the implications for the diagnosis of severe aortic stenosis in TAVR patients with low-gradient aortic stenosis.
Article in The Egyptian heart journal : (EHJ) : official bulletin of the Egyptian Society of Cardiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 2 citations in OpenAlex.
- Aortic Valve Calcification Across Aortic Stenosis Subtypes According to Gradient and Flow: Insights from a Single-Center Transcatheter Aortic Valve Implantation Cohort with 2-Year Mortality Outcomes.Journal of clinical medicine · 2026Article
- Aortic Valve Calcium Score: Applications in Clinical Practice and Scientific Research-A Narrative Review.Journal of clinical medicine · 2024Review
- Aortic Valve Calcium Score by Computed Tomography as an Adjunct to Echocardiographic Assessment-A Review of Clinical Utility and Applications.Journal of imaging · 2023Review
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Authors and funding
3 authors at 2 institutions in 2 countries.
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Abstract
backgroundMost of TAVR centers evaluate the calcium score in contrast-enhanced (ce) CT. We compared in this study between different methodologies to measure calcium score. We studied also the difference between patients with low-gradient (LG) and high-gradient (HG) severe aortic stenosis (AS) as regard the burden of aortic valve calcium (AVC).
resultsWe measured the calcium volume and score using Agatston methodology in non-contrast (nc) CT and with modified and fixed 850 Hounsfield unit (HU) thresholds in ce CT. The calcium score and volume in ceCT using even with modified thresholds is significantly lower than the assessed score and volume in ncCT. The median (IQR) of calcium score in nc CT and in cc CT were 1288 AU (750-1815) versus 947 HU (384-2202). The median (IQR) of calcium volume in nc CT and in cc CT with modified thresholds were 701 mm
conclusionsThe diagnosis of severe LGAS should not depend on a single parameter as calcium score. In these patients, calcium score should be measured in nc CT and not in ce CT.
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