Method for acquiring images of a body by rotational placement of a radiology device, in particular an angiography device

In order to acquire images around an elongate object, the direction of this elongate object is identified. For this purpose, an image point (24) of a location s (25) of the elongate object is located and identified in a first image (20). The image (27) of the epipolar line (26) connecting the focus...

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Hauptverfasser: HOMMERIN MICHEL, ROUGEE ANNE, LIENARD JEAN
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ROUGEE ANNE
LIENARD JEAN
description In order to acquire images around an elongate object, the direction of this elongate object is identified. For this purpose, an image point (24) of a location s (25) of the elongate object is located and identified in a first image (20). The image (27) of the epipolar line (26) connecting the focus of the X-ray tube to the identified point is plotted in the 2nd image (21). A point (28) which is the homologue of the point identified in the first image is located and identified on this image of the epipolar line. The spatial position of the characteristic point is deduced from identification of these points. This operation is repeated for a second characteristic location (29). The orientation of the elongate object (17) is deduced from these two characteristic locations. The position of the imaging device is then adjusted accordingly. Pour acquérir les images autour d'un objet allongé on repère la direction de cet objet allongé. Dans ce but dans une première image (20) on pointe et on repère un point image (24) d'un lieu s (25) de l'objet allongé. On trace dans la 2ème image (21) l'image (27) de la droite épipolaire (26) qui relie le foyer du tube à rayons X au point repéré. Sur cette image de la droite épipolaire on pointe et on repère un point homologue (28) du point repéré dans la première image. Des repérages de ces points on déduit la position dans l'espace du point caractéristique. On réitère cette opération pour une deuxième lieu caractéristique (29). De ces deux lieux caractéristiques on déduit l'orientation de l'objet (17) allongé. On règle ensuite la position du dispositif d'imagerie en conséquence.
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subjects DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
title Method for acquiring images of a body by rotational placement of a radiology device, in particular an angiography device
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