Magnetic resonance imaging was obtained on a 1.5-T MR scanner (Achieva, Philips Medical Systems, Best, The Netherlands or Intera, Philips Medical System) or on a 3-TMR scanner (Achieva, Philips Medical Systems) using a 16-channel neurovascular coil (Sense NV coil, Philips Medical Systems). MR examinations were performed with a 3-T MR imaging unit (Achieva, Philips Medical Systems) with a 16-channel neurovascular coil (Sense NV coil, Philips Medical Systems).
A transverse T2-weighted turbo spin-echo sequence was performed with a repetition time msec/echo time msec of 3906/100, with two signals acquired and an acquisition time of 2 min 59 s. A transverse T1-weighted turbo spin-echo sequence was performed with 675/10, two signals acquired, and an acquisition time of 2 min 51 s. All T1- and T2-weighted images were acquired with 30 imaging sections, a field of view of 190 (anterior to posterior) × 190 (right to left) × 120 (feet to head) mm3, and a reconstruction voxel size of 0.37 × 0.37 × 3.00 mm3. An intravenous dose of 0.1 mmol per kilogram of body weight of gadoterate meglumine (Dotarem; Guerbet, Paris, France) was administered to all patients to obtain contrast-enhanced T1-weighted images.
A transverse T2-weighted turbo spin-echo sequence was performed with a repetition time msec/echo time msec of 3906/100, with two signals acquired and an acquisition time of 2 min 59 s. A transverse T1-weighted turbo spin-echo sequence was performed with 675/10, two signals acquired, and an acquisition time of 2 min 51 s. All T1- and T2-weighted images were acquired with 30 imaging sections, a field of view of 190 (anterior to posterior) × 190 (right to left) × 120 (feet to head) mm3, and a reconstruction voxel size of 0.37 × 0.37 × 3.00 mm3. An intravenous dose of 0.1 mmol per kilogram of body weight of gadoterate meglumine (Dotarem; Guerbet, Paris, France) was administered to all patients to obtain contrast-enhanced T1-weighted images.