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![A perfusion head CT head CT image (stroke patient)](https://www.radiologyinfo.org/-/media/radinfo/gallery-items/images/h-to-m/hd-ct-perfusion.jpg?rev=1091d221256e47f4a4c9621b8db62c6d)
Perfusion CT in a patient with stroke demonstrates the part of the brain with severely decreased blood flow (arrows).
Note: Images are shown for illustrative purposes. Do not attempt to draw conclusions or make diagnoses by comparing these images to other medical images, particularly your own. Only qualified physicians should interpret images; the radiologist is the physician expert trained in medical imaging.