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Fig. 13 | BioMedical Engineering OnLine

Fig. 13

From: Initial evaluation of prospective cardiac triggering using photoplethysmography signals recorded with a video camera compared to pulse oximetry and electrocardiography at 7T MRI

Fig. 13

Acquired MRA images of an axial slice obtained during PO and vPPG triggering. In a the image acquired using vPPG triggering has a sharply defined vessel compared to the blurred vessel obtained by PO triggering. In b the vessel has a sharp outline and high contrast in both images. In c the image acquired using vPPG exhibits a blurred vessel signal compared to the sharply defined outline that was obtained by PO triggering

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BioMedical Engineering OnLine

ISSN: 1475-925X

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