The advances in neuroimaging are occurring at a we wish to accomplish by bringing out a series of dizzying pace. It is difficult for trainees in radiology volumes, each dealing with a single theme. The first and others in neurosciences-related disciplines to one is in your hands. keep abreast of the new developments. It is especially We wish to express our deepest gratitude to the important to design neuroimaging protocols to distinguished contributors, who have done an out- evaluate various neurological diseases. It therefore standing job. We equally thank our publisher. seems highly desirable that review articles be readily Comments are welcome. available that comb through the plethora of literature and provide state-of-the-art information on neuro- MS imaging of neurological diseases. It is this goal that SB Xl IMAGING OF NON-TRAUMATIC ISCHEMIC AND HEMORRHAGIC DISORDERS OF THE CENTRAL NERVOUS SYSTEM 1. MAGNETIC RESONANCE IMAGING OF INTRACRANIAL HEMORRHAGE Robert D. Zimmerman Historical Background is inferior scanners with MR units. If, however, MR The advent of magnetic resonance imaging led to to CT in the detection of hemorrhage, hospitals attempts to define the appearance of hemorrhage would still be required to maintain CT scanners, using this new technique. Early reports focused on since the demonstration of hemorrhage is of para- hematomas studied with T1-weighted (Tl W) inver- mount diagnostic and therapeutic importance in a sion recovery (IR) Scans performed on resistive MR patient with acute neurologic ictus. imagers.