CT signs of early cerebral infarction are subtle within the first 6 hours after symptom onset, but important to recognize. The CT reading panel of ECASS wants to share its experience by publishing this series of early CT scans from study patients in order to improve early recognition of ischemic infarction by CT and thus to improve patient care, and to provide material for practice. In this book each CT scan can be read with and without neuroradiological description. Follow-up scans of each case confirm early findings.