Department of Neurology, University Medical Center Utrecht, G03.228, PO Box 85500, Heidelberglaan 100, 3508 GA Utrecht, the Netherlands.
AJNR Am J Neuroradiol. 2013 Jun-Jul;34(6):E61-4. doi: 10.3174/ajnr.A2960. Epub 2012 Feb 16.
MR imaging at 7T has a high sensitivity for cerebral microbleed detection. We identified mIP processing conditions with an optimal balance between the number of visually detected microbleeds and the number of sections on 7T MR imaging. Even with optimal mIP processing, the limited size of some of the microbleeds and the susceptibility effects of other adjacent structures were a challenge for visual detection, which led to a modest inter-rater agreement, mainly due to missed microbleeds. Automated lesion-detection techniques may be required to optimally benefit from the increased spatial resolution offered by 7T MR imaging.
7T 磁共振成像对脑微出血检测具有较高的灵敏度。我们确定了 mIP 处理条件，在最佳的视觉检测微出血数量和 7T 磁共振成像切片数量之间取得了平衡。即使采用最佳的 mIP 处理，一些微出血的有限大小和其他相邻结构的磁化率效应仍然是视觉检测的挑战，这导致了观察者间的一致性较低，主要是因为一些微出血被遗漏了。为了从 7T 磁共振成像提供的更高空间分辨率中获得最佳效果，可能需要使用自动病灶检测技术。
