3D self‐gated cardiac cine imaging at 3 Tesla using stack‐of‐stars bSSFP with tiny golden angles and compressed sensing. Issue 5 (25th November 2018)

• Record Type: Journal Article
• Authors: Zhang, Xiaoyong; Xie, Guoxi; Lu, Na; Zhu, Yanchun; Wei, Zijun; Su, Shi; Shi, Caiyun; Yan, Fei; Liu, Xin; Qiu, Bensheng; Fan, Zhaoyang
• Is Part Of: Magnetic resonance in medicine. Volume 81:Issue 5(2019)
• Page Start: 3234
• Page End: 3244
• Publication Date: 2018-11-25
• Subjects: 3 Tesla -- 3D -- compressed sensing -- free breathing -- self‐gated cardiac cine -- tiny golden angle; Nuclear magnetic resonance -- Periodicals; Electron paramagnetic resonance -- Periodicals; 616.07548
• DOI: 10.1002/mrm.27612
• Languages: English
• ISSNs: 0740-3194

Abstract

Abstract : Purpose: To develop and evaluate an accelerated 3D self‐gated cardiac cine imaging technique at 3 Tesla without the use of external electrocardiogram triggering or respiratory gating. Methods: A 3D stack‐of‐stars balanced steady‐state free precession sequence with a tiny golden angle sampling scheme was developed to reduced eddy current effect‐related artefacts at 3 Tesla. Respiratory and cardiac motion were derived from a central 5‐point self‐gating signal extraction approach. The data acquired around the end‐expiration phases were then sorted into individual cardiac bins and used for reconstruction with compressed sensing. To evaluate the performance of the proposed method, image quality (1: the best; 4: the worst) was quantitatively compared using both the proposed method and the conventional 3D golden‐angle self‐gated method. Linear regression and Bland‐Altman analysis were used to assess the functional measurements agreement between the proposed method and the routine 2D breath‐hold multi‐slice technique. Results: Compared to the conventional 3D golden‐angle self‐gated method, the proposed method yielded images with much less streaking artifact and higher myocardium edge sharpness (0.50 ± 0.06 vs. 0.45 ± 0.05, P = 0.004). The proposed method provided an inferior image quality score to the routine 2D technique (2.13 ± 0.35 vs. 1.38 ± 0.52, P = 0.063) but a superior one to the conventional self‐gated method (2.13 ± 0.35 vs. 3.13 ± 0.64, P = 0.031). Left ventricular functional measurements between the proposed method and routine 2D technique were all well in agreement. Conclusion: This study presents a novel self‐gating approach to realize rapid 3D cardiac cine imaging at 3 Tesla.