When do you opt for MRI brain in addition to CTA/CTP for evaluating eligibility for extended window thrombolysis?

In a patient with disabling deficits (regardless of location), if the last known well time is unknown, but the symptom discovery was within 4.5 hours, we pursue an MRI to assess for IV thrombolysis eligibility after obtaining the initial CT head and CTA, and if there is no intervenable (per standard...

In my practice, never. It is too slow in our setup, where I practice. You can make the decision to treat or not treat on the basis of CT imaging alone. Similarly, if you are in a place where you have fast MR and use MR primarily, you will use MR to decide and will not, for example, do CT-based imagi...

I would consider a good quality CTP, along with CTA and CT, to be adequate, with rare exceptions.