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Acute ischemia of the right lenticulostriate territory result in obscuration of the lentiform nucleus ("blurred basal ganglia"), which appears hypoattenuated because of cytotoxic edema. Dense MCA sign as a result of thrombus or embolus.
The detection of the extension of acute ischemic brain parenchyma with nonenhanced CT scanning was facilitated by soft-copy visual review at a PACS workstation by using variable, nonstandard window width and center level settings (here called as "stroke window", the second series)2.