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Compressed Sensing Cardiac Cine Imaging Compared with Standard Balanced Steady-State Free Precession Cine Imaging in
Davide Curione1, Paolo Ciliberti1, Caterina Beatrice Monti1
1Advanced Cardiovascular Radiology Unit, Department of Radiology and Bioimaging (D. Curione, V.B., P. Ciancarella, T.P.S., C.N., A.S.), and Department of Pediatric Cardiology and Cardiac Surgery (P. Ciliberti, M.A.P.), Bambino Gesù Children's Hospital IRCCS, Piazza Sant'Onofrio 4, 00165 Rome, Italy; Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy (C.B.M., D. Capra, F.S.); Department of Radiology, Santobono-Pausilipon Children's Hospital, Naples, Italy (D.F.); and Unit of Radiology, IRCCS Policlinco San Donato, San Donato Milanese, Italy (F.S.).
Insights
Compressed Sensing (CS) cardiac cine imaging offers comparable ventricular measurements to balanced steady-state free precession (bSSFP) in children. This faster CS technique may be suitable for pediatric cardiac MRI, reducing scan times significantly.
Area of Science:
- Cardiovascular Magnetic Resonance Imaging
- Medical Imaging Technology
- Pediatric Cardiology
Background:
- Standard balanced steady-state free precession (bSSFP) cardiac cine imaging is widely used in pediatric populations.
- Acquisition times for bSSFP can be lengthy, posing challenges for pediatric patients.
- Real-time compressed sensing (CS) offers potential for accelerated MRI acquisition.
Purpose of the Study:
- To compare the diagnostic performance of real-time compressed sensing (CS) cardiac cine imaging against standard bSSFP.
- To evaluate ventricular volume and function measurements obtained by both CS and bSSFP sequences in pediatric patients.
Main Methods:
- Prospective inclusion of twenty pediatric patients (mean age 15 ± 5 years) with congenital heart disease or cardiomyopathy.
- All participants underwent cardiac cine imaging using both 1.5-T bSSFP and CS sequences.
- Ventricular quantification was performed by blinded readers, with correlation to phase-contrast flow measurements and analysis of intra- and interreader agreement.
Main Results:
- No significant differences in ventricular parameters were found between CS and bSSFP for Reader 1 (P > .05).
- Reader 2 found a significant difference only in ejection fraction (P = .02).
- Mean acquisition time for CS (20 seconds) was significantly shorter than for bSSFP (160 seconds) (P < .001).
Conclusions:
- Compressed Sensing (CS) cardiac cine imaging provides equivalent ventricular volume and function measurements compared to bSSFP.
- CS significantly reduces acquisition time, making it a potentially valuable tool for pediatric cardiac MRI.
- CS imaging may be suitable for the pediatric population due to its speed and comparable diagnostic accuracy.
Purpose:
To compare real-time compressed sensing (CS) and standard balanced steady-state free precession (bSSFP) cardiac cine imaging in children.
Materials And Methods:
Twenty children (mean age, 15 years ± 5 [SD], range, 7-21 years; 10 male participants) with biventricular congenital heart disease (n = 11) or cardiomyopathy (n = 9) were prospectively included. Examinations were performed with 1.5-T imagers by using both bSSFP and CS sequences in all participants. Quantification of ventricular volumes and function was performed for all images by two readers blinded to patient diagnosis and type of sequence. Values were correlated with phase-contrast flow measurements by one reader. Intra- and interreader agreement were analyzed.
Results:
There were no significant differences between ventricular parameters measured on CS compared with those of bSSFP (P > .05) for reader 1. Only ejection fraction showed a significant difference (P = .02) for reader 2. Intrareader agreement was considerable for both sequences (bSSFP: mean difference range, +1 to -2.6; maximum CI, +7.9, -13; bias range, 0.1%-4.1%; intraclass correlation coefficient [ICC] range, 0.931-0.997. CS: mean difference range, +7.4 to -5.6; maximum CI, +37.2, -48.8; bias range, 0.5%-7.5%; ICC range, 0.717-0.997). Interreader agreement was acceptable but less robust, especially for CS (bSSFP: mean difference range, +2.6 to -5.6; maximum CI, +60.7, -65.3; bias range, 1.6%-6.2%; ICC range, 0.726-0.951. CS: mean difference range, +10.7 to -9.1; maximum CI, +87.5, -84.6; bias range, 1.1%-17.3%; ICC range, 0.509-0.849). The mean acquisition time was shorter for CS (20 seconds; range, 17-25 seconds) compared with that for bSSFP (160 seconds; range, 130-190 seconds) (P < .001).
Conclusion:
CS cardiac cine imaging provided equivalent ventricular volume and function measurements with shorter acquisition times compared with those of bSSFP and may prove suitable for the pediatric population.Keywords: Compressed Sensing, Balanced Steady-State Free Precession, Cine Imaging, Cardiovascular MRI, Pediatrics, Cardiac, Heart, Cardiomyopathies, Congenital, Segmentation© RSNA, 2022.
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