FIGURE 2. (A) Axial slice from one CT image of normal pig shown with endocardial and epicardial borders drawn. (B) Myocardial region of interest, or template, derived from CT image. Each pixel in template is assigned value of 1 to represent uniform activity concentration distribution over extent of myocardium. (C) Reconstructed template image obtained after mathematically modeling SPECT acquisition process. (D) Corresponding ^99mTc-sestamibi image.

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