Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect.

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  • معلومة اضافية
    • Author-Supplied Keywords:
      Coronary artery calcification
      expectation-maximization
      partial volume effect
      proportion map
      volume measurement
    • Abstract:
      Coronary artery calcification (CAC) is quantified based on a computed tomography (CT) scan image. A calcified region is identified. Modified expectation maximization (MEM) of a statistical model for the calcified and background material is used to estimate the partial calcium content of the voxels. The algorithm limits the region over which MEM is performed. By using MEM, the statistical properties of the model are iteratively updated based on the calculated resultant calcium distribution from the previous iteration. The estimated statistical properties are used to generate a map of the partial calcium content in the calcified region. The volume of calcium in the calcified region is determined based on the map. The experimental results on a cardiac phantom, scanned 90 times using 15 different protocols, demonstrate that the proposed method is less sensitive to partial volume effect and noise, with average error of 9.5% (standard deviation (SD) of 5–7mm³) compared with 67% (SD of 3–20mm³) for conventional techniques. The high reproducibility of the proposed method for 35 patients, scanned twice using the same protocol at a minimum interval of 10 mm, shows that the method provides 2-3 times lower interscan variation than conventional techniques. [ABSTRACT FROM AUTHOR]
    • Abstract:
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    • Author Affiliations:
      1Medicsight plc, London, WIJ 5AT, U.K.
      2Department of Radiology, CHUV — University of Lausanne, CH-1000 Lausanne, Switzerland
    • ISSN:
      0278-0062
    • Accession Number:
      10.1109/TMI.2007.893344
    • Accession Number:
      24373169
  • Citations
    • ABNT:
      DEHMESHKI, J. et al. Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect. IEEE Transactions on Medical Imaging, [s. l.], v. 26, n. 3, p. 273–282, 2007. Disponível em: . Acesso em: 13 nov. 2019.
    • AMA:
      Dehmeshki J, Xujiong Ye, Amin H, Abaei M, Xinyu Lin, Qanadli SD. Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect. IEEE Transactions on Medical Imaging. 2007;26(3):273-282. doi:10.1109/TMI.2007.893344.
    • APA:
      Dehmeshki, J., Xujiong Ye, Amin, H., Abaei, M., Xinyu Lin, & Qanadli, S. D. (2007). Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect. IEEE Transactions on Medical Imaging, 26(3), 273–282. https://doi.org/10.1109/TMI.2007.893344
    • Chicago/Turabian: Author-Date:
      Dehmeshki, Jamshid, Xujiong Ye, Hamdan Amin, Maryam Abaei, Xinyu Lin, and Salah D. Qanadli. 2007. “Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect.” IEEE Transactions on Medical Imaging 26 (3): 273–82. doi:10.1109/TMI.2007.893344.
    • Harvard:
      Dehmeshki, J. et al. (2007) ‘Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect’, IEEE Transactions on Medical Imaging, 26(3), pp. 273–282. doi: 10.1109/TMI.2007.893344.
    • Harvard: Australian:
      Dehmeshki, J, Xujiong Ye, Amin, H, Abaei, M, Xinyu Lin & Qanadli, SD 2007, ‘Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect’, IEEE Transactions on Medical Imaging, vol. 26, no. 3, pp. 273–282, viewed 13 November 2019, .
    • MLA:
      Dehmeshki, Jamshid, et al. “Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect.” IEEE Transactions on Medical Imaging, vol. 26, no. 3, Mar. 2007, pp. 273–282. EBSCOhost, doi:10.1109/TMI.2007.893344.
    • Chicago/Turabian: Humanities:
      Dehmeshki, Jamshid, Xujiong Ye, Hamdan Amin, Maryam Abaei, Xinyu Lin, and Salah D. Qanadli. “Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect.” IEEE Transactions on Medical Imaging 26, no. 3 (March 2007): 273–82. doi:10.1109/TMI.2007.893344.
    • Vancouver/ICMJE:
      Dehmeshki J, Xujiong Ye, Amin H, Abaei M, Xinyu Lin, Qanadli SD. Volumetric Quantification of Atherosclerotic Plaque in CT Considering Partial Volume Effect. IEEE Transactions on Medical Imaging [Internet]. 2007 Mar [cited 2019 Nov 13];26(3):273–82. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=24373169&custid=s8280428