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Non-contrast free-breathing 2D CINE compressed SENSE T1-TFE cardiovascular MRI at 3T in sedated young children for
Inka Ristow1, Caroline-Viktoria Hancken-Pauschinger2, Shuo Zhang3
1Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
A new non-contrast cardiac MRI technique, free-breathing 2D CINE T1-weighted TFE-sequence with compressed sensing (FB 2D CINE CS T1-TFE), offers superior diagnostic accuracy and image quality for congenital heart disease (CHD) in young children. This method provides excellent vessel visualization and measurement agreement without contrast agents.
Area of Science:
- Cardiovascular Imaging
- Pediatric Radiology
- Magnetic Resonance Imaging
Background:
- Cardiac MRI is essential for diagnosing congenital heart disease (CHD).
- 3 Tesla (3T) MRI application in young children with CHD faces challenges.
- Existing 3D imaging techniques may have limitations in image quality and diagnostic accuracy for pediatric CHD assessment.
Purpose of the Study:
- To compare a novel non-contrast free-breathing 2D CINE T1-weighted TFE-sequence with compressed sensing (FB 2D CINE CS T1-TFE) against established 3D imaging methods.
- To evaluate diagnostic accuracy, image quality, and vessel diameter measurements for CHD in sedated young children at 3T.
- To assess the clinical utility of FB 2D CINE CS T1-TFE for pediatric CHD assessment.
Main Methods:
- Retrospective single-center study involving 37 sedated pediatric CHD patients (1.5 ± 1.4 years) at 3T.
- Comparison of FB 2D CINE CS T1-TFE with 3D non-contrast whole-heart (3D WH) and 3D contrast-enhanced MR angiography (3D CE-MRA).
- Independent assessment of image quality, CHD type, diagnostic confidence, vessel diameters, contrast, and sharpness by two radiologists.
Main Results:
- FB 2D CINE CS T1-TFE demonstrated superior image quality, diagnostic confidence, and sensitivity for intra- and extracardiac pathologies compared to 3D WH and 3D CE-MRA (p<0.05).
- The novel sequence exhibited significantly better contrast and vessel sharpness (p<0.001), enabling 100% vessel measurability.
- FB 2D CINE CS T1-TFE achieved the highest inter-reader agreement for vessel diameter measurements (Krippendorff's alpha: 0.94-0.96).
Conclusions:
- FB 2D CINE CS T1-TFE is a robust, high-quality non-contrast MRI technique for assessing CHD in sedated young children at 3T.
- Its advantages in image quality, diagnostic accuracy, and ease of use (no contrast, free-breathing) support potential widespread clinical adoption.
- This technique enhances diagnostic capabilities for pediatric congenital heart disease, improving patient care and reducing examination burdens.
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