Fig. 2From: High-resolution compressed sensing time-of-flight MR angiography outperforms CT angiography for evaluating patients with Moyamoya disease after surgical revascularizationExamples for 4-grades neovascularization on CS TOF-MRA. Grade-0, almost no visualization of neovascularization; Grade-1, a few localized neovascularization, covering less than 25% of the operation area; Grade-2, moderate neovascularization, covering 25–50% of the operation area; Grade-3, abundant neovascularization, covering more than 50% of the operation areaBack to article page