La radiologia medica

, Volume 123, Issue 5, pp 331–337 | Cite as

Blood-threshold CMR volume analysis of functional univentricular heart

  • Francesco Secchi
  • Marco Alì
  • Marcello Petrini
  • Francesca Romana Pluchinotta
  • Andrea Cozzi
  • Mario Carminati
  • Francesco Sardanelli
CARDIAC RADIOLOGY
  • 33 Downloads

Abstract

Purpose

To validate a blood-threshold (BT) segmentation software for cardiac magnetic resonance (CMR) cine images in patients with functional univentricular heart (FUH).

Materials and methods

We evaluated retrospectively 44 FUH patients aged 25 ± 8 years (mean ± standard deviation). For each patient, the epicardial contour of the single ventricle was manually segmented on cine images by two readers and an automated BT algorithm was independently applied to calculate end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), ejection fraction (EF), and cardiac mass (CM). Aortic flow analysis (AFA) was performed on through-plane images to obtain forward volumes and used as a benchmark. Reproducibility was tested in a subgroup of 24 randomly selected patients. Wilcoxon, Spearman, and Bland–Altman statistics were used.

Results

No significant difference was found between SV (median 57.7 ml; interquartile range 47.9–75.6) and aortic forward flow (57.4 ml; 48.9–80.4) (p = 0.123), with a high correlation (r = 0.789, p < 0.001). Intra-reader reproducibility was 86% for SV segmentation, and 96% for AFA. Inter-reader reproducibility was 85 and 96%, respectively.

Conclusion

The BT segmentation provided an accurate and reproducible assessment of heart function in FUH patients.

Keywords

Congenital heart disease Univentricular heart Cardiac magnetic resonance Ventricular function Image segmentation 

Notes

Compliance with ethical standards

Ethical standards

This article does not contain any studies with human participants or animals performed by any of the authors.

Ethical approval

The Ethical Committee of IRCCS Ospedale San Raffaele approved the protocol UH_01 on July 14, 2016. Register 115/INT/2016.

Conflict of interest

F Secchi has been sponsored to congresses by Bracco Imaging SpA (Milan, Italy). F. Sardanelli is on the speaker’s bureau for Bracco Imaging SpA (Milan, Italy) and received research grants from Bayer Healthcare (Berlin, Germany)

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Copyright information

© Italian Society of Medical Radiology 2018

Authors and Affiliations

  1. 1.Unit of RadiologyIRCCS Policlinico San DonatoSan Donato MilaneseItaly
  2. 2.Integrative Biomedical ResearchUniversità degli Studi di MilanoMilanItaly
  3. 3. School in RadiodiagnosticsUniversità degli Studi di MilanoMilanItaly
  4. 4.Department of Pediatric Cardiology and Adult Cingenital Heart DiseaseIRCCS Policlinico San DonatoSan Donato MilaneseItaly
  5. 5.Corso di Laurea in Medicina e ChirurgiaUniversità degli Studi di MilanoMilanItaly
  6. 6.Department of Biomedical Sciences for HealthUniversità degli Studi di MilanoSan Donato MilaneseItaly

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