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FIG 3. A, Extended-FOV image with unacceptable image distortion due to large-scale patient motion. Irregular deformity and discontinuity of the arterial wall make precise evaluation of the wall structure difficult (arrow). The FOV is not satisfactorily extended.
B, Extended-FOV image with mild distortion due to arterial pulsation (right). A regular waveform deformity is present on the wall of the CCA (right, straight arrow). There is also a discontinuity of the artery due to improper probe operation (right, curved arrow). The original frame is free from the motion artifact and shows the normal double-line pattern of the artery (left).
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