Method for marking an entry position for an injection apparatus in interventional mr imaging
AssigneeSiemens Healthineers AG
InventorFlorian Maier
Life of this patent
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Abstract
A method for marking an entry position for an injection apparatus on a surface of a patient positioned inside a patient receiving region of a magnetic resonance device. The method includes providing a virtual entry position, introducing a marking apparatus into the patient receiving region, acquiring time-resolved MR image data from the marking apparatus by the magnetic resonance device, ascertaining a current position of the marking apparatus based on the time-resolved MR image data, iteratively changing the current position of the marking apparatus using the virtual entry position and the current position, and delivering the liquid from the marking apparatus when the current position matches the virtual entry position.
Claims16
A marking apparatus, comprising:
- a tubular housing made from MR-visible material surrounding a hollow region oriented in an axial direction, wherein the tubular housing is telescopic and a length of the tubular housing is variable in the axial direction;
- a liquid apparatus, which is arranged inside the hollow region at a delivery end of the tubular housing, and is designed to receive and/or deliver a liquid;
- and
- a portioning apparatus, which is arranged inside the hollow region, and is designed to control a volume of the liquid apparatus to receive and/or deliver the liquid,
- wherein the tubular housing comprises telescoping sections arranged in the axial direction, each having a truncated cone shape with a decreasing diameter in a direction toward the delivery end, and wherein the telescoping sections are nestable within the telescoping section proximate the delivery end.
Dependencies are inferred from the claim text.