Aortography keypoint tracking for TAVI

Published: 11 November 2021| Version 2 | DOI: 10.17632/pgynfy766g.2
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Description

This dataset presents a set of aortography imaging series collected during the implantation of 14 CoreValve self-expanding aortic valve bioprostheses to patients with aortic valve stenosis from 2015 to 2018. All Transcatheter Aortic Valve Implantation (TAVI) procedures were performed by the same operator at the Department of Cardiovascular Surgery within the Research Institute for Complex Issues of Cardiovascular Diseases. We collected 35 video series of 1000×1000 pixels with an 8-bit depth (a scale from 0 to 255) during the TAVI. The final sample consisted of 3,730 grayscale images. TAVI allowed obtaining a series of anonymized images reflecting three essential steps: positioning of the catheter and delivery system; beginning of the capsule retraction and exposing the prosthesis; deployment of the prosthesis. In this dataset, we labeled up to eleven keypoints of interest per image. A brief description of the keypoints is provided below: Anatomical landmarks: • Aortic annulus, a target landmark for TAVI: Aortic root 1 (AA1) and Aortic root 2 (AA2); • Aortic sinotubular junction, an additional landmark for the correct determination of the aortic annulus plane: Sinotubular junction 1 (STJ1) and Sinotubular junction 2 (STJ2); Delivery system landmarks: • Delivery system anchors, a landmark defining the degree of prosthesis extraction: Catheter Proximal (CP); • Bending point of the catheter, a landmark of the sinotubular portion of the stent: Catheter Middle (CM); • The radiopaque capsule marker band on the upper shaft portion to the distal ring, a landmark of the outer shaft bending degree used for defining the extent of prosthesis extraction: Catheter Distal (CD); • Catheter tip, a landmark determining the location of the catheter and aortic annulus plane: Catheter Tip (CT); Additional landmarks: • Distal part, a landmark for the valve implantation indicating an aortic annulus plane: Pigtail (PT); • The distal portion of a self-expanding prosthesis determines the location of the stent during implantation and its deviation from an aortic root plane: Distal part of the stent: Frame Edge 1 (FE1) and Frame Edge 2 (FE2).

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Cardiovascular Medicine, Machine Learning, Tracking Algorithm, Aorta Surgery, Cardiovascular Imaging, Deep Learning

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