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Fig. 2 | CVIR Endovascular

Fig. 2

From: Accuracy of registration techniques and vascular imaging modalities in fusion imaging for aortic endovascular interventions: a phantom study

Fig. 2

Exemplary placement of circular markers at vessel orifices and accuracy assessment via cannulation of those orifices with a guidewire. A circular marker was carefully adjusted to the anatomy of the left subclavian artery’s orifice using multiplanar reconstructions of the cross-sectional imaging data, in this case, a CTA (ac). Each plane’s orientation is demonstrated by the human model in the bottom right corner of each image. d Correct placement of the marker (*) was verified in the vessel’s virtual 3D model, which was reconstructed from the original CTA data. For demonstration purposes, another marker was placed in the brachiocephalic trunk. e Subsequently, image fusion was performed, and each orifice was cannulated with a soft guidewire. If the wire went through the circular marker (brachiocephalic trunk; dashed arrow), the marker position was marked as accurate, and if the wire missed the marker (left subclavian artery; straight arrow), the position was dismissed as inaccurate

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