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Acetazolamide Stress Brain-Perfusion SPECT Predicts the Need for Carotid Shunting During Carotid Endarterectomy

Departments of Nuclear Medicine, Vascular Surgery, and Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea

View larger version (9K): [in this window] [in a new window]   FIGURE 1. One-day protocol of basal and ACZ-SPECT. i.v. = intravenously.

View larger version (107K): [in this window] [in a new window]   FIGURE 2. Severity of reduced rCVR on 99mTc-ECD ACZ-SPECT. Mild grade indicates reduced rCVR with abnormal distributions that fell into 1 color range from basal SPECT after ACZ administration (10%–20% change). Severe grade indicates reduced rCVR with drop of at least 2 color ranges from basal SPECT after ACZ administration (>20% change).