Ioannis Koktzoglou1,2, Rong Huang1, Archie L Ong2,3, Pascale J Aouad1,4, Matthew T Walker1,2, Robert R Edelman1,4. 1. Department of Radiology, NorthShore University HealthSystem, Evanston, IL, USA. 2. Pritzker School of Medicine, University of Chicago, Chicago, IL, USA. 3. Department of Neurology, NorthShore University HealthSystem, Evanston, IL, USA. 4. Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Abstract
PURPOSE: To report a 3D multi-echo thin-slab stack-of-stars (tsSOS) quiescent-interval slice-selective (QISS) strategy for high-resolution magnetic resonance angiography (MRA) of the entire neck in under seven minutes. METHODS: The neck arteries of eight subjects were imaged at 3 Tesla. Multi-echo 3D tsSOS QISS using a FLASH readout was compared with 3D tsSOS FLASH, 2D QISS, 2D TOF, and 3D TOF. A root-mean-square (RMS) combination of echo time images was tested. Evaluation metrics included arterial signal-to-noise ratio (SNR), arterial-to-muscle contrast-to-noise ratio (CNR), and image quality. RESULTS: 3D multi-echo tsSOS QISS using a RMS combination of echo time images increased SNR and CNR by 60% and 63% with respect to the reconstruction obtained with the shortest echo time. 3D tsSOS QISS showed superior CNR with respect to 3D tsSOS FLASH imaging, and more than 3-fold higher SNR and CNR with respect to 2D radial QISS when normalized for voxel size. 3D tsSOS QISS provided good to excellent image quality that exceeded the image quality of 2D QISS, 2D TOF, and 3D TOF (P < .05). CONCLUSION: Whole-neck high-resolution nonenhanced MRA is feasible using 3D tsSOS QISS, and produced image quality that exceeded those of competing nonenhanced MRA protocols at 3 Tesla.
PURPOSE: To report a 3D multi-echo thin-slab stack-of-stars (tsSOS) quiescent-interval slice-selective (QISS) strategy for high-resolution magnetic resonance angiography (MRA) of the entire neck in under seven minutes. METHODS: The neck arteries of eight subjects were imaged at 3 Tesla. Multi-echo 3D tsSOS QISS using a FLASH readout was compared with 3D tsSOS FLASH, 2D QISS, 2D TOF, and 3D TOF. A root-mean-square (RMS) combination of echo time images was tested. Evaluation metrics included arterial signal-to-noise ratio (SNR), arterial-to-muscle contrast-to-noise ratio (CNR), and image quality. RESULTS: 3D multi-echo tsSOS QISS using a RMS combination of echo time images increased SNR and CNR by 60% and 63% with respect to the reconstruction obtained with the shortest echo time. 3D tsSOS QISS showed superior CNR with respect to 3D tsSOS FLASH imaging, and more than 3-fold higher SNR and CNR with respect to 2D radial QISS when normalized for voxel size. 3D tsSOS QISS provided good to excellent image quality that exceeded the image quality of 2D QISS, 2D TOF, and 3D TOF (P < .05). CONCLUSION: Whole-neck high-resolution nonenhanced MRA is feasible using 3D tsSOS QISS, and produced image quality that exceeded those of competing nonenhanced MRA protocols at 3 Tesla.
Authors: D D Blatter; A L Bahr; D L Parker; R O Robison; J A Kimball; D M Perry; S Horn Journal: AJR Am J Roentgenol Date: 1993-12 Impact factor: 3.959
Authors: Ali Serhal; Ioannis Koktzoglou; Pascale Aouad; James C Carr; Shivraman Giri; Omar Morcos; Robert R Edelman Journal: J Cardiovasc Magn Reson Date: 2018-08-06 Impact factor: 5.364
Authors: Ioannis Koktzoglou; Rong Huang; William J Ankenbrandt; Matthew T Walker; Robert R Edelman Journal: Magn Reson Med Date: 2021-02-22 Impact factor: 3.737