Volumetric measurement of pericardial adipose tissue from contrast-enhanced coronary computed tomography angiography: A reproducibility study

John H. Nichols, Bharat Samy, Khurram Nasir, Caroline S. Fox, P. Christian Schulze, Fabian Bamberg, Udo Hoffmann

Research output: Contribution to journalArticle

42 Scopus citations

Abstract

Purpose: Pericardial adipose tissue may exert unique metabolic and cardiovascular risks in patients. The use of cardiac multidetector computed tomography (MDCT) imaging may enable the accurate localization and quantification of pericardial and intrathoracic adipose tissue. The reproducibility of electrocardiogram-gated high-resolution cardiac MDCT-based volumetric quantification of pericardial and intrathoracic adipose tissue has not been reported. Methods: We included 100 consecutive patients (age 54.5 ± 12.0 yr, 60% men) who underwent a standard contrast-enhanced coronary CT for the evaluation of coronary artery plaque and stenosis (64-slice MDCT, temporal resolution: 210 ms, spatial resolution: 0.6 mm, 850 mAs, 120, kvp) after a presentation of acute chest pain. Two independent observers measured intrathoracic (IAT) and pericardial adipose tissue (PAT) by using a semiautomatic segmentation algorithm based on three-dimensional analysis. Results: Inter-reader reproducibility was excellent (relative difference: 7.35 ± 7.22% for PAT and 6.23 ± 4.91% for IAT, intraclass correlation 0.98 each). Similar results were obtained for intra-observer reproducibility (relative difference: 5.18 ± 5.19% for PAT and 4.34 ± 4.12% for IAT, intraclass correlation 0.99 each). Conclusion: This study demonstrates that MDCT-based 3D semiautomatic segmentation for volumetric quantification of PAT and IAT is highly reproducible. Further research is warranted to assess whether volumetric measurements may substantially improve the predictive value of obesity measures for insulin resistance, type 2 diabetes mellitus, and cardiovascular diseases.

Original languageEnglish (US)
Pages (from-to)288-295
Number of pages8
JournalJournal of cardiovascular computed tomography
Volume2
Issue number5
DOIs
StatePublished - Sep 2008

Keywords

  • Computed tomography
  • Pericardial adipose tissue
  • Reproducibility

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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