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EP-4740886-A1 - GUIDANCE SUPPORT FOR GUIDING A MEDICAL DEVICE

EP4740886A1EP 4740886 A1EP4740886 A1EP 4740886A1EP-4740886-A1

Abstract

For guidance support for guiding a medical device (7), image data is received, which represents the medical device (7) inside a hollow organ (8), wherein the medical device (7) extends along a part (9) of the hollow organ (8). A diameter (D) and/or a curvature of the hollow organ (8) at a target position or in a target region (10) for the medical device (7) is determined depending on the image data. Guidance support information for guiding the medical device (7) at least to the target position or the target region (10) is generated depending on the diameter (D) and/or the curvature and depending on at least one geometric property of the medical device (7).

Inventors

  • FAHRIG, REBECCA
  • KOWARSCHIK, MARKUS

Assignees

  • Siemens Healthineers AG

Dates

Publication Date
20260513
Application Date
20241111

Claims (15)

  1. Computer-implemented method for guidance support for guiding a medical device (7), wherein - image data is received, which represents the medical device (7) inside a hollow organ (8), wherein the medical device (7) extends along a part (9) of the hollow organ (8); - a diameter (D) and/or a curvature of the hollow organ (8) at a target position or in a target region (10) for the medical device (7) is determined depending on the image data; and - guidance support information for guiding the medical device (7) at least to the target position or the target region (10) is generated depending on the diameter (D) and/or the curvature and depending on at least one geometric property of the medical device (7).
  2. Computer-implemented method according to claim 1, wherein the at least one geometric property of the medical device (7) is determined at least in part depending on the image data.
  3. Computer-implemented method according to one of the preceding claims, wherein the image data comprises at least two projection images representing the medical device (7) inside the hollow organ (8) according to at least two respective projection directions.
  4. Computer-implemented method according to one of claims 1 or 2, wherein - the image data comprises a plurality of projection images representing the medical device (7) inside the hollow organ (8) according to respective projection directions; - a three-dimensional reconstruction is generated depending on the plurality of projection images; and - the diameter (D) and/or the curvature is determined depending on the three-dimensional reconstruction.
  5. Computer-implemented method according to one of the preceding claims, wherein the at least one geometric property of the medical device (7) comprises a diameter of the medical device (7) or of a part (7a, 7b) of the medical device (7) and/or a curvature of the medical device (7) or of the part (7a, 7b) of the medical device (7) and/or a length of the medical device (7) or of the part (7a, 7b) of the medical device (7) and/or a ratio of an inner diameter to an outer diameter of the medical device (7) or of the part (7a, 7b) of the medical device (7) .
  6. Computer-implemented method according to one of the preceding claims, wherein the guidance support information is generated depending on at least one mechanical property of the medical device (7).
  7. Computer-implemented method according to claim 6, wherein the at least one mechanical property comprises a stiffness of the medical device (7) or of a part (7a, 7b) of the medical device (7) and/or an elasticity of the medical device (7) or of the part (7a, 7b) of the medical device (7) and/or a surface lubricity of the medical device (7) or of the part (7a, 7b) of the medical device (7).
  8. Computer-implemented method according to one of the preceding claims, wherein the guidance support information or a part of the guidance support information is output to a user of the medical device (7).
  9. Computer-implemented method according to one of the preceding claims, wherein the guidance support information or a part of the guidance support information is provided to a control system for automatically controlling a navigation of the medical device (7).
  10. Computer-implemented method according to one of the preceding claims, wherein the medical device (7) comprises a catheter and/or a vessel prosthesis and/or a vessel implant and/or a flow diverter and/or a stent and/or a guide wire.
  11. Computer-implemented method according to one of the preceding claims, wherein the guidance support information comprises - a risk information concerning a risk of damaging the hollow organ (8) when moving the medical device (7) to the target position or the target region (10) or beyond the target position or the target region (10); and/or - a recommendation or specification of a navigation maneuver to move the medical device (7) to the target position or the target region (10) or beyond the target position or the target region (10); and/or - a recommendation not to move the medical device (7) to the target position or the target region (10) or beyond the target position or the target region (10).
  12. Data processing system (6), which is configured to carry out a computer-implemented method according to one of the preceding claims.
  13. Medical imaging system (1) comprising a data processing system (6) according to claim 12 and a medical imaging device (3), which is configured to generate the image data.
  14. Medical imaging system (1) according to claim 13, further comprising an endovascular robotic device, which is configured to automatically control a navigation of the medical device (7) depending on the guidance support information.
  15. Computer program product comprising instructions, which, when executed by a data processing system (6), causes the data processing system (6) to carry out a computer-implemented method according to one of claims 1 to 11.

Description

The present invention is directed to a computer-implemented method for guidance support for guiding a medical device, wherein image data is received, which represents the medical device inside a hollow organ, wherein the medical device extends along a part of the hollow organ. The invention is further directed to a corresponding data processing system for carrying out said computer implemented method, to a medical imaging system comprising said data processing system, and to a corresponding computer program product. Endovascular procedures, for example catheter-based deployment of a flow-diverting stent, also denoted as flow diverter, to treat a cerebral aneurysm, are often based on pre-interventional imaging using for example computed tomography, CT, cone-beam-CT, CBCT, or magnetic resonance imaging MRI, and/or intra-procedural (real-time) imaging using for example CBCT, fluoroscopy, digital subtraction angiography, DSA, et cetera. The quality of the outcome depends on the intuition, the experience, and the skills of the interventionalist. Up to now, image information is only interpreted by the interventionalist and then taken into consideration to guide the subsequent clinical decisions and procedural steps. As a consequence difficulties or complications may arise in case it turns out that the used endovascular medical device or a part of it is not suitable for being guided to or through a certain position or region of the vessel structure. Furthermore, pre-interventional image data may not always be sufficient to select the medical device in an optimal manner since the endovascular intervention itself may change the geometry of the vessel structure. Therefore, similar difficulties or complications may also arise when robotic endovascular devices are used for guiding the medical device. The same or similar situations may arise in the context of other endoluminar procedures that is applications in hollow organs other than vessel structures, for example in bronchoscopy et cetera. It is an objective of the present invention to provide an improved concept for image-based guidance support for guiding a medical device inside a hollow organ, which overcomes said drawbacks at least in part. This objective is achieved by the subject matter of the independent claim. Further implementations and preferred embodiments are subject matter of the dependent claims. The invention is based on the idea to generate guidance support information for guiding the medical device depending on the diameter of the hollow organ and/or the curvature of the hollow organ at a target position or target region of the hollow organ and depending on at least one geometric property of the medical device. According to an aspect of the invention, a computer-implemented method for guidance support for guiding a medical device is provided. Therein, image data is received, which represents the medical device inside a hollow organ, wherein the medical device extends along a part of the hollow organ, in particular only along the part of the hollow organ. A diameter of the hollow organ at a target position for the medical device or in a target region for the medical device and/or a curvature of the hollow organ at the target position or in the target region is determined depending on the image data. Guidance support information for guiding the medical device at least to the target position or the target region is generated depending on the diameter of the hollow organ and/or the curvature of the hollow organ and depending on at least one geometric property of the medical device. Unless stated otherwise, all steps of the computer-implemented method may be performed by a data processing system, which comprises at least one data processing device. In particular, the at least one data processing device is configured or adapted to perform the steps of the computer-implemented method. For this purpose, the at least one data processing device may for example store a computer program comprising instructions which, when executed by the at least one data processing device, cause the at least one data processing device to execute the computer-implemented method. The expressions "data processing system" and "at least one data processing device" may be used interchangeably, here and in the following. This holds also for respective expressions derived therefrom. In case the at least one data processing device comprises two or more data processing devices, certain steps carried out by the at least one data processing device may also be understood such that different data processing devices carry out different steps or different parts of a step. In particular, it is not required that each data processing device carries out the steps completely. In other words, carrying out the steps may be distributed amongst the two or more data processing devices. From each implementation of the computer-implemented method, a respective implementation of a method for guidance suppo