Article Figures & Data
Figures
- Fig 1.
Axial (A and B) and coronal (C and D) T2-weighted 1.5T (A and C) and 7T (B and D) images in a patient with a giant pituitary macroadenoma. C and D, Magnified approximately 250% compared with A and B. Although lesion margins are conspicuous at 1.5T, the 7T image provides a better definition of the internal architecture, including intrinsic adenoma vasculature (white arrowheads in B, C, and D). Both strengths show a nodule of slightly lower signal posterolaterally (arrows in A and B), but internal architecture is again better seen at 7T. Coronal MIP projection of a 7T time-of-flight MRA in the same patient (E) shows striate artery displacement (double arrowheads), as well as a recruited posterior circulation supply inferiorly (double-headed arrow) and additional vessels arising from the anterior cerebral artery superiorly (arrowheads).
- Fig 2.
A patient with epilepsy with a subtle right-sided parieto-occipital polymicrogyria faintly seen on axial T2-weighted imaging at 3T (A, magnified inset B) with improved characterization at 7T (C, magnified inset D). Internal architecture and heterogeneity are also much better appreciated at 7T. SWI 7T minimum-intensity-projection demonstrates a cluster of venous structures (arrowheads) associated with the polymicrogyria (E, magnified inset F).
- Fig 3.
A 73-year-old man with a posterior circulation stroke, an occluded left vertebral artery, and stenosis of the basilar artery. TOF angiography at 3T of a patient with basilar artery stenosis (white arrow, A). Pre- and postcontrast vessel wall imaging at 3T (B and C) and 7T (D and E) in a patient with basilar artery atherosclerotic plaque (white arrows indicate areas of stenosis).
- Fig 4.
Axial T2-weighted image at 7T of a patient with classic trigeminal neuralgia and associated right-sided neurovascular compression (arrow indicates right trigeminal nerve; arrowhead indicates artery in A and magnified inset B). There may be subtle hyperintensity within the nerve itself. Whole-brain maximum intensity time-of-flight projection at 7T (C) and fused gray-scale T2 and color-encoded TOF (D and E, at same locations as A and B) show orientation of the vessels and nerve and resultant neurovascular compression.
