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Quantitative assessment of LV function and volumes with 3-slice segmentation of cine SSFP short axis images: our experience


Cardiac MRI is the gold standard for assessing cardiac function, but requires contour tracing of the left ventricular (LV) myocardium through multiple cine steady-state free precession (SSFP) short axis images. Despite advancements in semi-automated software, contour detection and manual readjustments of multiple slices throughout the cardiac cavity remains a tedious process. Our goal is to assess LV functional parameters using 3-slice segmentations in comparison to conventional multi-slice segmentation in patients with a wide range of pathologies.


We retrospectively studied 1.5T cardiac MR images of 62 patients with various clinical indications. All patients had a stack of EKG gated segmented SSFP cine images through the LV. Semi-automated cardiac MR software (Argus) was used to trace LV contours both at multiple slices from base to apex as well as just 3 slices (base, mid and apical) by two readers. End diastolic volume (EDV), end systolic volume (ESV), stroke volume (SV), and ejection fraction (EF) were calculated using both assessment methods.


There were no statistically significant differences between EF and LV volumes obtained by multi-slice vs 3-slice analysis for both readers (P > 0.05). For reader 1 (and 2), Bland-Altman plot revealed the mean difference in LVEF between multi-slice and 3-slice analysis was 0.4% (0.5%) with limits of agreement of -4.3% to 5.1% (-3.9% to 4.9%) (Figure 1). For both readers, all differences in EF between multi-slice and 3-slice analysis were within 5.3%. The measured volumes are listed in Table 1. Multi-slice assessment required approximately 10 minutes per study while 3-slice evaluation required about 3-5 minutes.

Figure 1
figure 1

Bland-Altman Plots for evaluation of the differences between ejection fraction (EF) measurements using multi-slice and 3-slice slice technique for (a) Reader 1 and (b) Reader 2.

Table 1 Left Ventricular Functional Parameters


The LVEF obtained from either 3-slice or multi-slice evaluation of SSFP cine images closely correlate across various cardiac pathologies, thereby offering a method to reduce post-processing time. Of note, although the decreased LV volumes obtained by 3-slice segmentation are statistically significant, the difference of < 3.7% may not be clinically significant.



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This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.

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Kuoy, E., Nguyen, C.V., Dissanayake, S.N. et al. Quantitative assessment of LV function and volumes with 3-slice segmentation of cine SSFP short axis images: our experience. J Cardiovasc Magn Reson 16 (Suppl 1), P384 (2014).

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