PURPOSE: To evaluate the effectiveness of flow-sensitive dephasing (FSD) magnetization preparation in improving blood signal suppression of three-dimensional (3D) turbo spin-echo (TSE) sequence (SPACE) for isotropic high-spatial-resolution carotid arterial wall imaging at 3T. MATERIALS AND METHODS: The FSD-prepared SPACE sequence (FSD-SPACE) was implemented by adding two identical FSD gradient pulses right before and after the first refocusing 180 degrees -pulse of the SPACE sequence in all three orthogonal directions. Nine healthy volunteers were imaged at 3T with SPACE, FSD-SPACE, and multislice T2-weighted 2D TSE coupled with saturation band (SB-TSE). Apparent carotid wall-lumen contrast-to-noise ratio (aCNR(w-l)) and apparent lumen area (aLA) at the locations with residual-blood (rb) signal shown on SPACE images were compared between SPACE and FSD-SPACE. Carotid aCNR(w-l) and lumen (LA) and wall area (WA) measured from FSD-SPACE were compared to those measured from SB-TSE. RESULTS: Plaque-mimicking flow artifacts identified in seven carotids on SPACE images were eliminated on FSD-SPACE images. The FSD preparation resulted in slightly reduced aCNR(w-l) (P = 0.025), but significantly improved aCNR between the wall and rb regions (P < 0.001) and larger aLA (P < 0.001). Compared to SB-TSE, FSD-SPACE offered comparable aCNR(w-l) with much higher spatial resolution, shorter imaging time, and larger artery coverage. The LA and WA measurements from the two techniques were in good agreement based on intraclasss correlation coefficient (0.988 and 0.949, respectively; P < 0.001) and Bland-Altman analyses. CONCLUSION: FSD-SPACE is a time-efficient 3D imaging technique for carotid arterial wall with superior spatial resolution and blood signal suppression.
PURPOSE: To evaluate the effectiveness of flow-sensitive dephasing (FSD) magnetization preparation in improving blood signal suppression of three-dimensional (3D) turbo spin-echo (TSE) sequence (SPACE) for isotropic high-spatial-resolution carotid arterial wall imaging at 3T. MATERIALS AND METHODS: The FSD-prepared SPACE sequence (FSD-SPACE) was implemented by adding two identical FSD gradient pulses right before and after the first refocusing 180 degrees -pulse of the SPACE sequence in all three orthogonal directions. Nine healthy volunteers were imaged at 3T with SPACE, FSD-SPACE, and multislice T2-weighted 2D TSE coupled with saturation band (SB-TSE). Apparent carotid wall-lumen contrast-to-noise ratio (aCNR(w-l)) and apparent lumen area (aLA) at the locations with residual-blood (rb) signal shown on SPACE images were compared between SPACE and FSD-SPACE. Carotid aCNR(w-l) and lumen (LA) and wall area (WA) measured from FSD-SPACE were compared to those measured from SB-TSE. RESULTS: Plaque-mimicking flow artifacts identified in seven carotids on SPACE images were eliminated on FSD-SPACE images. The FSD preparation resulted in slightly reduced aCNR(w-l) (P = 0.025), but significantly improved aCNR between the wall and rb regions (P < 0.001) and larger aLA (P < 0.001). Compared to SB-TSE, FSD-SPACE offered comparable aCNR(w-l) with much higher spatial resolution, shorter imaging time, and larger artery coverage. The LA and WA measurements from the two techniques were in good agreement based on intraclasss correlation coefficient (0.988 and 0.949, respectively; P < 0.001) and Bland-Altman analyses. CONCLUSION: FSD-SPACE is a time-efficient 3D imaging technique for carotid arterial wall with superior spatial resolution and blood signal suppression.
Authors: Dennis L Parker; K Craig Goodrich; Marilyn Masiker; Jay S Tsuruda; Gregory L Katzman Journal: Magn Reson Med Date: 2002-05 Impact factor: 4.668
Authors: C Yuan; L M Mitsumori; M S Ferguson; N L Polissar; D Echelard; G Ortiz; R Small; J W Davies; W S Kerwin; T S Hatsukami Journal: Circulation Date: 2001-10-23 Impact factor: 29.690
Authors: Jian-Ming Cai; Thomas S Hatsukami; Marina S Ferguson; Randy Small; Nayak L Polissar; Chun Yuan Journal: Circulation Date: 2002-09-10 Impact factor: 29.690
Authors: D M Mandell; M Mossa-Basha; Y Qiao; C P Hess; F Hui; C Matouk; M H Johnson; M J A P Daemen; A Vossough; M Edjlali; D Saloner; S A Ansari; B A Wasserman; D J Mikulis Journal: AJNR Am J Neuroradiol Date: 2016-07-28 Impact factor: 3.825
Authors: Adam de Havenon; Mahmud Mossa-Basha; Lubdha Shah; Seong-Eun Kim; Min Park; Dennis Parker; J Scott McNally Journal: Neuroradiology Date: 2017-09-23 Impact factor: 2.804
Authors: P Vakil; A H Elmokadem; F H Syed; C G Cantrell; F H Dehkordi; T J Carroll; S A Ansari Journal: AJNR Am J Neuroradiol Date: 2016-11-17 Impact factor: 3.825
Authors: Matthew D Alexander; Chun Yuan; Aaron Rutman; David L Tirschwell; Gerald Palagallo; Dheeraj Gandhi; Laligam N Sekhar; Mahmud Mossa-Basha Journal: J Neurol Neurosurg Psychiatry Date: 2016-01-08 Impact factor: 10.154