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DOI: 10.1148/radiol.2401050471
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Automatic Quantitative Left Ventricular Analysis of Cine MR Images by Using Three-dimensional Information for Contour Detection1

Robert Jan M. van Geuns, MD, PhD, Timo Baks, MD, Ed H. B. M. Gronenschild, PhD, Jean-Paul M. M. Aben, BSc, Piotr A. Wielopolski, PhD, Filippo Cademartiri, MD, PhD and Pim J. de Feyter, MD, PhD

1 From the Departments of Cardiology (R.J.M.v.G., T.B., P.J.d.F.) and Radiology (R.J.M.v.G., T.B., P.A.W., F.C., P.J.d.F.), Erasmus Medical Center, Thoraxcenter Ba 585, PO Box 2040, 3000 CA Rotterdam, the Netherlands; Department of Medical Informatics, Maastricht University, Maastricht, the Netherlands (E.H.B.M.G.); and Pie Medical Imaging, Maastricht, the Netherlands (J.P.M.M.A.). Received March 21, 2005; revision requested May 12; revision received July 10; accepted July 27; final version accepted September 14. Address correspondence to R.J.M.v.G. (e-mail: r.vangeuns{at}erasmusmc.nl).


Figure 1
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  		Figure 1: On the basis of the epicardial boundaries on the two- and four-chamber MR images, four intersection points with each short-axis MR image can be determined. A spline is fitted to these four points that subsequently starts the automatic left ventricle segmentation algorithm.

 

Figure 2
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  		Figure 2a: Bland-Altman plots show comparison of manually derived left ventricular volumes with automatically derived volumes. The results are presented in plots for the endocardial (a) end-systolic (ESV) and (b) end-diastolic (ED) volumes, for the epicardial (c) end-systolic (ESV) and (d) end-diastolic (ED) volumes, and for (e) EF and (f) mass. Dashed lines show respective means of the volume differences, and dotted lines indicate ± 2 standard deviations (2SD).

 

Figure 2
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  		Figure 2b: Bland-Altman plots show comparison of manually derived left ventricular volumes with automatically derived volumes. The results are presented in plots for the endocardial (a) end-systolic (ESV) and (b) end-diastolic (ED) volumes, for the epicardial (c) end-systolic (ESV) and (d) end-diastolic (ED) volumes, and for (e) EF and (f) mass. Dashed lines show respective means of the volume differences, and dotted lines indicate ± 2 standard deviations (2SD).

 

Figure 2
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  		Figure 2c: Bland-Altman plots show comparison of manually derived left ventricular volumes with automatically derived volumes. The results are presented in plots for the endocardial (a) end-systolic (ESV) and (b) end-diastolic (ED) volumes, for the epicardial (c) end-systolic (ESV) and (d) end-diastolic (ED) volumes, and for (e) EF and (f) mass. Dashed lines show respective means of the volume differences, and dotted lines indicate ± 2 standard deviations (2SD).

 

Figure 2
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  		Figure 2d: Bland-Altman plots show comparison of manually derived left ventricular volumes with automatically derived volumes. The results are presented in plots for the endocardial (a) end-systolic (ESV) and (b) end-diastolic (ED) volumes, for the epicardial (c) end-systolic (ESV) and (d) end-diastolic (ED) volumes, and for (e) EF and (f) mass. Dashed lines show respective means of the volume differences, and dotted lines indicate ± 2 standard deviations (2SD).

 

Figure 2
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  		Figure 2e: Bland-Altman plots show comparison of manually derived left ventricular volumes with automatically derived volumes. The results are presented in plots for the endocardial (a) end-systolic (ESV) and (b) end-diastolic (ED) volumes, for the epicardial (c) end-systolic (ESV) and (d) end-diastolic (ED) volumes, and for (e) EF and (f) mass. Dashed lines show respective means of the volume differences, and dotted lines indicate ± 2 standard deviations (2SD).

 

Figure 2
View larger version (17K):

[in a new window]
  		Figure 2f: Bland-Altman plots show comparison of manually derived left ventricular volumes with automatically derived volumes. The results are presented in plots for the endocardial (a) end-systolic (ESV) and (b) end-diastolic (ED) volumes, for the epicardial (c) end-systolic (ESV) and (d) end-diastolic (ED) volumes, and for (e) EF and (f) mass. Dashed lines show respective means of the volume differences, and dotted lines indicate ± 2 standard deviations (2SD).

 




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