US 7,650,179 B2Granted

Computerized workflow method for stent planning and stenting procedure

AssigneeSiemens Aktiengesellschaft

InventorsThomas Redel, Estelle Camus

Life of this patent

Estimating the term…

Loading patent…

Abstract

In a computerized workflow method for stent planning and conducting a stenting procedure, characteristics of a lesion to be stented are determined from a 3D planning image of the region and selection of an actual stent for stenting the lesion is made with computer-assisted analysis of the lesion based on the characteristics. A virtual stent is electronically generated based on the actual stent, and, using the virtual stent, a best position for the actual stent, for effectively stenting the lesion, is determined. A real time 2D image of the lesion-containing region is displayed during the stenting procedure, with the virtual stent included therein at the aforementioned best position. A physician manually guides the actual stent relative to the lesion during the stenting procedure until the position of the actual stent, as seen in the displayed real time 2D image, coincides with the virtual stent in that image.

Claims20

Dependent claims

A method for computer-assisted stenting, including stent planning, comprising the steps of:

acquiring image data from an internal region of a subject comprising a lumen afflicted with a lesion and reconstructing an at least 3D image of said region from said image data, said 3D image containing and representing characteristics of said lesion;
conducting a stenosis analysis of said lesion characteristics using only said 3D image with at least a portion of said stenosis analysis being automatically electronically conducted by computerized analysis of said lesion characteristics, to obtain a stenosis analysis result;
based on said stenosis analysis result, selecting an actual stent, from among a plurality of available, existing stents of different sizes, to treat said lesion;
in a computer, generating a virtual simulated stent corresponding to said actual stent;
electronically overlaying only said virtual stent on said 3D image and, in a computer, automatically electronically determining a best position of said virtual stent, relative to said lesion, for effectively treating said lesion as well as automatically electronically determining an angulation of a C-arm of an imaging system that will be used during a stenting procedure to implant said actual stent;
and
conducting said stenting procedure to implant said actual stent, including generating a real time 2D image of said internal region using said imaging system with said C-arm thereof at said angulation, and combining only said virtual stent at said best position in said real time 2D image, and manually guiding said actual stent in said stenting procedure using said real time 2D image to bring said actual stent to an actual position in said internal region coinciding with said best position.

4 more elements

A method for computer-assisted stenting and planning of said stenting, comprising the steps of:

using an imaging modality in a planning step orientation, generating an at least 3D image data set of an internal region of a subject containing a lumen afflicted with a lesion, and an environment around said lesion, at which an actual stent is to be positioned and deployed in a subsequent stenting procedure;
using a computer supplied only with said 3D image data set, analyzing said region and said environment in said 3D image data set and producing a lesion-characterizing data set representing anatomical and pathological characteristics of said lesion and said environment;
using said lesion-characterizing data set, selecting said actual stent for said stenting procedure, from among a plurality of available, existing stents of different sizes, said actual stent having a marker detectable by a stenting procedure imaging modality;
in said computer, generating a virtual stent corresponding to the selected actual stent, including a virtual marker corresponding to said marker of said actual stent, and electronically overlaying only said virtual stent in said 3D image data set at a virtual deployed position optimized to stent said lesion;
from said 3D image data set overlaid with said virtual stent, determining an imaging orientation of said stenting procedure imaging modality for conducting said stenting procedure;
conducting said stenting procedure, including orienting said stenting procedure imaging modality to the selected orientation and generating a real time 2D image of said region with said stenting procedure imaging modality;
and
displaying said real time 2D image during said stenting procedure combined only with said virtual stent at said position optimized to stent said lesion, and manually guiding said actual stent relative to said lesion to cause a representation of said actual stent in said real time 2D image to coincide with said virtual stent.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/298,772Filed 9 Dec 2005
Published: US 2007/0135707 A114 Jun 2007
Granted: 19 Jan 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

A61F 2/82
Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting…:…
A61B 6/481
Diagnostic techniques: involving the use of contrast agents
A61B 6/504
Specially adapted for specific body parts; specially adapted for specific clinical applications: for diagnosis of blood vessels, e.g. by angiography
A61B 90/36
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…