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Related Experiment Videos

Three dimensional volume quantification of aortic valve calcification using multislice computed tomography.

G J Morgan-Hughes1, P E Owens, C A Roobottom

  • 1Plymouth NHS Trust, Plymouth, UK. gareth.morgan-hughes@phnt.swest.nhs.uk

Heart (British Cardiac Society)
|September 17, 2003
PubMed
Summary

New multislice CT accurately quantifies three-dimensional aortic valve calcification volume (3D AVCV). This technique shows excellent reproducibility and correlates closely with aortic stenosis severity.

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Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Medical Physics

Background:

  • Aortic valve calcification is a key indicator of aortic stenosis severity.
  • Accurate quantification of calcification volume is crucial for assessing disease progression and treatment efficacy.

Purpose of the Study:

  • To evaluate a novel multislice computed tomography (CT) technique for three-dimensional quantification of aortic valve calcification volume (3D AVCV).
  • To investigate the relationship between aortic valve stenosis severity and 3D AVCV.

Main Methods:

  • Fifty patients with echocardiographically confirmed aortic valve calcification underwent two ECG-triggered multislice CT scans.
  • Three-dimensional aortic valve calcification volume (3D AVCV) was quantified, and inter-scan agreement was assessed.

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  • 3D AVCV was compared with echocardiographic markers of aortic stenosis severity.

    • Main Results:

    • Excellent agreement was observed between the two 3D AVCV measurements (correlation coefficient r = 0.99).
    • Inter-scan variability was low (median 7.9%), though influenced by calcification magnitude.
    • 3D AVCV showed strong correlations with maximal predicted transvalvar gradient (r² = 0.77) and aortic valve area (r² = 0.73).

    Conclusions:

    • Multislice CT offers a reproducible method for quantifying 3D AVCV.
    • A strong, non-linear relationship exists between echocardiographic measures of valve stenosis and 3D AVCV.