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10 cze 2014 · A 6-minute multimodal MR protocol with good diagnostic quality is feasible for the evaluation of patients with acute ischemic stroke and can result in significant reduction in scan time rivaling that of the multimodal computed tomographic protocol.
16 maj 2018 · Intravenous thrombolysis with alteplase, a recombinant tissue plasminogen activator, is the standard medical treatment for acute ischemic stroke within 4.5 hours after the onset of symptoms....
Low-field (LF) MRI (<0.5T) can detect several types of brain injury, including ischaemic and haemorrhagic stroke. Implementing LF-MRI in acute stroke care may offer several advantages, including extended applicability, increased safety, faster administration, reduced staffing and costs.
A comprehen-sive CT stroke protocol delivers a mean effective dose of 16.4 mSv,9 which is ≈6× the dose of an unenhanced CT head. This high dose usually prohibits repeating the study for follow-up of treatment in most clinical settings.
11 gru 2020 · It is the opinion of the authors that MRI represents the best option for imaging patients with stroke and unknown time of onset when last known well is >4.5 hours, allowing for the use of both DWI-FLAIR mismatch and penumbral mismatch for clinical decisions.
Table 1. Role of Imaging in Patients with Acute Ischemic Stroke according to the Type of Treatment, Imaging Modality, and Time from Onset of Symptoms. Treatment. Time from symptom onset. CT-based protocol. MR-based Role of imaging protocol. Indication for treatment. Contraindication for treatment. < 4.5 h. Head CT.
30 kwi 2014 · A standard stroke MRI protocol has an acquisition time of less than 10 min [Scout 10 s/T2* 2 min/diffusion weighted MR-imaging (DWI) 30 s/FLAIR 2 min/perfusion imaging 1 min]. Starting the protocol with a T2*weighted sequence followed by DWI provides the minimal required imaging information within 3 min.
