A 3D breathhold Dixon method for fat-water separated imaging achieved robust fat suppression in 21 of 25 cases, yielding higher pericardial visualization scores but slightly worse overall image quality than 2D FGRE.
Does a 3D breathhold Dixon technique improve visualization of epicardial and pericardial delayed enhancement compared to a conventional 2D FGRE technique in patients?
A 3D breathhold Dixon technique enables fat-water separated imaging of myocardial delayed enhancement with improved pericardial visualization compared to 2D FGRE.
PURPOSE: To develop a breathhold three-dimensional (3D) Dixon technique for fat suppressed imaging of myocardial infarction. MATERIALS AND METHODS: A pulse sequence was developed that uses a radial fan-beam k-space segmentation scheme for efficient coverage of k-space, enabling 3D scans in a single breathhold. The sequence uses a dual-echo bipolar readout to enable Dixon fat-water separation for improved visualization of epicardial and pericardial delayed enhancement. The 3D Dixon method was compared with a conventional 2D fast gradient recalled echo (FGRE) -based technique in 25 patients. RESULTS: Pericardial visualization scores and confidence were higher while overall image quality and artifacts were slightly worse for 3D Dixon compared with 2D FGRE. Robust fat suppression was achieved in 21 of 25 cases using the 3D Dixon method. CONCLUSION: A 3D breathhold method for fat-water separated imaging of myocardial delayed enhancement was developed and validated.
Saranathan et al. (Thu,) conducted a other in Myocardial infarction (n=25). 3D breathhold Dixon fat-water separated imaging vs. 2D fast gradient recalled echo (FGRE) was evaluated on Pericardial visualization scores, confidence, overall image quality, and artifacts. A 3D breathhold Dixon method for fat-water separated imaging achieved robust fat suppression in 21 of 25 cases, yielding higher pericardial visualization scores but slightly worse overall image quality than 2D FGRE.