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Segmented CMR acquisition with iterative SENSE reconstruction using L1-regularization in the evaluation of right ventricular systolic function

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Regression analysis and assessment of mean differences between EF and indexed SV between acquisitions. A: linear regression analysis of CINE Seg-IR versus CINE Seg for EF B: linear regression analysis of CINE Seg-IR versus CINE Seg for BSA indexed SV C: Bland-Altman plot comparing CINE Seg-IR and CINE Seg EF D: Bland-Altman plot comparing CINE Seg-IR and CINE Seg BSA indexed SV. Red points indicate averages outside of 1.96 SD. CINE Seg-IR = segmented sparsely sampled tPAT factor 4 acceleration with iterative SENSE reconstruction using L1-regularization; CINE Seg = conventional segmented cine SSFP sequence with GRAPPA factor 2 acceleration; EF = ejection fraction; SV = stroke volume
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Figure 1: Regression analysis and assessment of mean differences between EF and indexed SV between acquisitions. A: linear regression analysis of CINE Seg-IR versus CINE Seg for EF B: linear regression analysis of CINE Seg-IR versus CINE Seg for BSA indexed SV C: Bland-Altman plot comparing CINE Seg-IR and CINE Seg EF D: Bland-Altman plot comparing CINE Seg-IR and CINE Seg BSA indexed SV. Red points indicate averages outside of 1.96 SD. CINE Seg-IR = segmented sparsely sampled tPAT factor 4 acceleration with iterative SENSE reconstruction using L1-regularization; CINE Seg = conventional segmented cine SSFP sequence with GRAPPA factor 2 acceleration; EF = ejection fraction; SV = stroke volume

Mentions: Acceptable CINE Seg-IR acquisitions were successfully acquired in all subjects. The mean difference in ejection fraction (EF) and indexed stroke volume (SV) between CINE Seg and CINE Seg-IR were -0.02 ± 3.74% and 0.18 ± 3.76 mL/m2, respectively. The R2 value for linear regression of CINE Seg-IR versus CINE Seg is shown in Figure 1. Qualitative review yielded comparable values for CINE SEG versus CINE Seg-IR, as seen in Table 1. ICC values for CINE Seg and CINE Seg-IR, were 0.878 and 0.941 for EF, and 0.955 and 0.922 for SV, respectively.


Segmented CMR acquisition with iterative SENSE reconstruction using L1-regularization in the evaluation of right ventricular systolic function
Regression analysis and assessment of mean differences between EF and indexed SV between acquisitions. A: linear regression analysis of CINE Seg-IR versus CINE Seg for EF B: linear regression analysis of CINE Seg-IR versus CINE Seg for BSA indexed SV C: Bland-Altman plot comparing CINE Seg-IR and CINE Seg EF D: Bland-Altman plot comparing CINE Seg-IR and CINE Seg BSA indexed SV. Red points indicate averages outside of 1.96 SD. CINE Seg-IR = segmented sparsely sampled tPAT factor 4 acceleration with iterative SENSE reconstruction using L1-regularization; CINE Seg = conventional segmented cine SSFP sequence with GRAPPA factor 2 acceleration; EF = ejection fraction; SV = stroke volume
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4043753&req=5

Figure 1: Regression analysis and assessment of mean differences between EF and indexed SV between acquisitions. A: linear regression analysis of CINE Seg-IR versus CINE Seg for EF B: linear regression analysis of CINE Seg-IR versus CINE Seg for BSA indexed SV C: Bland-Altman plot comparing CINE Seg-IR and CINE Seg EF D: Bland-Altman plot comparing CINE Seg-IR and CINE Seg BSA indexed SV. Red points indicate averages outside of 1.96 SD. CINE Seg-IR = segmented sparsely sampled tPAT factor 4 acceleration with iterative SENSE reconstruction using L1-regularization; CINE Seg = conventional segmented cine SSFP sequence with GRAPPA factor 2 acceleration; EF = ejection fraction; SV = stroke volume
Mentions: Acceptable CINE Seg-IR acquisitions were successfully acquired in all subjects. The mean difference in ejection fraction (EF) and indexed stroke volume (SV) between CINE Seg and CINE Seg-IR were -0.02 ± 3.74% and 0.18 ± 3.76 mL/m2, respectively. The R2 value for linear regression of CINE Seg-IR versus CINE Seg is shown in Figure 1. Qualitative review yielded comparable values for CINE SEG versus CINE Seg-IR, as seen in Table 1. ICC values for CINE Seg and CINE Seg-IR, were 0.878 and 0.941 for EF, and 0.955 and 0.922 for SV, respectively.

View Article: PubMed Central - HTML

No MeSH data available.


Related in: MedlinePlus