ProSPective Evaluation of Non-contrast sINe spiN Flat-dEtectoR CT for the Detection of Intracranial hemorrhageS

Inclusion Criteria: * Informed Consent as documented by signature or fulfilling the criteria for emergency or deferral consent * Patients with symptoms suggestive of ischemic stroke (NIHSS ≥ 7) or suggestive of haemorrhagic stroke with a cranial non-contrast MDCT and a feasible non-contrast syngo DynaCT Sine Spin within 4 hours * Patient presenting within 24 hours of last seen well * Patients presenting directly to the treating hospital (i.e. mothership patients) OR transfer patients with the indication for repeated imaging according to the standard operation procedures of the treating hospital * Age above 18 years * Agreement of treating physician to perform non-contrast syngo DynaCT Sine Spin Exclusion Criteria: * Severe metal artifacts on initial MDCT imaging * Planned invasive interventions between MDCT and FDCT scan * Clinical deterioration between MDCT and FDCT scan (i.e. an increase of the NIHSS of more than 4 points) * Evidence of an ongoing pregnancy prior to enrollment. A negative pregnancy test before enrollment is required for all women with child-bearing potential