CT or MRI in Work up for i.v. Thrombolysis: a Single-centre Study

Acute stroke occurs in approximately 13.000 persons every year in Denmark, 10 - 15 % now receives intervenous thrombolytic therapy, which remains the most important acute treatment in ischaemic stroke. For more than a decade there has been an ongoing discussion if Computerized Tomography (CT) or Magnetic Resonance Imaging (MRI) were best before thrombolysis: Magnetic Resonance Imaging is superior in visualising ischaemia, but Computerized Tomography is quicker and more easily applicable. In the investigators centre primary imaging in work up of acute stroke during working hours will alternate between Computerized Tomography and Magnetic Resonance Imaging days based on a fixed calendar for a 24 months period as a quality development project. This study is planned to include patients who have acute stroke imagining during this period, a total of 600 patients is expected. The investigators will compare door-to-needle time, patient safety, quality of imaging, patients' experience, physicians' decision certainty, and use of recourses.