Fetal 3D cardiovascular cine image acquisition using radial sampling and compressed sensing

作者：Marjolein Piek, Daniel Ryd, Johannes Töger, Frederik Testud, Erik Hedström, Anthony H. Aletras · 发表于：Magnetic Resonance in Medicine · 年份：2022 · DOI：10.1002/mrm.29467 · 被引用次数：11 · 研究领域：Fetal and Pediatric Neurological Disorders、Congenital Heart Disease Studies、Cardiovascular Function and Risk Factors

PURPOSE: To explore a fetal 3D cardiovascular cine acquisition using a radial image acquisition and compressed-sensing reconstruction and compare image quality and scan time with conventional multislice 2D imaging. METHODS: Volumetric fetal cardiac data were acquired in 26 volunteers using a radial 3D balanced SSFP pulse sequence. Cardiac gating was performed using a Doppler ultrasound device. Images were reconstructed using a parallel-imaging and compressed-sensing algorithm. Multiplanar reformatting to standard cardiac views was performed before image analysis. Clinical 2D images were used for comparison. Qualitative and quantitative image evaluation were performed by two experienced observers (scale: 1-4). Volumes, mass, and function were assessed. RESULTS: Average scan time for the 3D imaging was 6 min, including one localizer. A 2D imaging stack covering the entire heart including localizer sequences took at least 6.5 min, depending on planning complexity. The 3D acquisition was successful in 7 of 26 subjects (27%). Overall image contrast and perceived resolution were lower in the 3D images. Nonetheless, the 3D images had, on average, a moderate cardiac diagnostic quality (median [range]: 3 [1-4]). Standard clinical 2D acquisitions had a high cardiac diagnostic quality (median [range]: 4 [3, 4]). Cardiac measurements were not different between 2D and 3D images (all p > 0.16). CONCLUSION: The presented free-breathing whole-heart fetal 3D radial cine MRI acquisition and re...