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European Radiology

, Volume 15, Issue 2, pp 312–318 | Cite as

Assessment of right ventricular function by 16-detector-row CT: comparison with magnetic resonance imaging

  • K. Koch
  • F. Oellig
  • K. Oberholzer
  • P. Bender
  • P. Kunz
  • P. Mildenberger
  • U. Hake
  • K.-F. Kreitner
  • M. Thelen
Cardiac

Abstract

The purpose of this study was to determine right ventricular (RV) function from 16-detector-row CT by using two different software tools in comparison with MRI. Nineteen patients underwent cardiac CT. (1) With semiautomated contour detection software end-diastolic and end-systolic RV volumes were determined from short-axis CT reformations (MPR) created at every 10% of the RR-interval. (2) End-systolic and end-diastolic axial images were transformed to 3D to determine the volumes by using a threshold-supported reconstruction algorithm. Steady-state free-precession cine-MRI of the heart was done in short-axis orientation. RV function could not be analyzed in one patient because of sternal wire artifacts in MRI. Mean end-diastolic (155.4±54.6 ml) and end-systolic (79.1±37.0 ml) RV volumes determined with MPR correlated well with MRI [151.9±53.7 ml (r=0.98) and 75.0±36.0 ml (r=0.96), respectively (P<0.001)]. RV stroke volume (76.2±20.2 ml for MPR-CT, 76.9±20.7 ml for MRI, r=0.93) showed a good correlation and RV ejection fraction (50.8±8.4% for MPR-CT, 51.9±7.4% for MRI, r=0.74) only a moderate one. Threshold supported 3D reconstructions revealed insufficient correlations with MRI (r=0.31–0.59). MPR-based semiautomated analysis of cardiac 16 detector-row CT allows for RV functional analysis. The results correlate well with MRI findings. Threshold value-supported 3D reconstructions did not show satisfying results because of inhomogeneities of RV contrast enhancement.

Keywords

Heart CT Multidetector-row Function Ventricles MRI 

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • K. Koch
    • 1
  • F. Oellig
    • 1
  • K. Oberholzer
    • 1
  • P. Bender
    • 1
  • P. Kunz
    • 1
  • P. Mildenberger
    • 1
  • U. Hake
    • 2
  • K.-F. Kreitner
    • 1
  • M. Thelen
    • 1
  1. 1.Department of RadiologyJohannes Gutenberg-University MainzMainzGermany
  2. 2.Department of Cardiothoracic and Vascular SurgeryJohannes Gutenberg-University MainzMainzGermany

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