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. Author manuscript; available in PMC: 2014 May 30.
Published in final edited form as: AJR Am J Roentgenol. 2013 May;200(5):W450–W457. doi: 10.2214/AJR.12.8934

Fig. 5. Common artifacts with CT–myocardial perfusion imaging (MPI).

Fig. 5

A, Variations in CT–myocardial perfusion imaging (MPI) over cardiac R-R cycle, or beat-to-beat variability, may result in either false-positive or false-negative findings; 40% R-R interval image was false-positive.

B, CT-MPI defects that are adjacent to phase-determined boundary, but that fail to cross phase-determined boundary (arrows), are deemed artifact.

C, Inferolateral defect due to beam-hardening from spine or descending aorta.