More articles from Brain
- Cost-Effectiveness of CT Angiography and Perfusion Imaging for Delayed Cerebral Ischemia and Vasospasm in Aneurysmal Subarachnoid Hemorrhage
This comparative-effectiveness and cost-effectiveness study assessed the use of CT angiography and perfusion in patients with cerebral ischemia after aneurysmal SAH. The authors found that CTA and CTP should be the preferred imaging strategy in SAH, compared with transcranial Doppler ultrasound, leading to improved clinical outcomes and lower health care costs.
- Hyperintense Basilar Artery on FLAIR MR Imaging: Diagnostic Accuracy and Clinical Impact in Patients with Acute Brain Stem Stroke
Because FLAIR high signal intensity in occluded arteries occurs elsewhere in the brain, these authors analyzed the signal of the basilar artery in 20 instances of occlusion in a group of patients who also underwent DSA. While the FLAIR hyperintense basilar artery sign showed moderate sensitivity, its specificity and accuracy were high for the detection of occlusions. The extent of the occlusion also predicted survival.
- Calcified Cerebral Emboli, A “Do Not Miss” Imaging Diagnosis: 22 New Cases and Review of the Literature
The prevalence, imaging appearance, presumed source, treatment, and outcome of patients with calcified cerebral emboli on CT were assessed in 22 cases seen by the authors and in 48 from the literature. Most calcified emboli were found in the middle cerebral artery territory and were thought to arise from the heart, aortic arch, or carotid plaques. The overall prevalence of these emboli was 2.7% with 27% initially misdiagnosed and 9% overlooked on the first interpretation.