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An alignment system for liver surgery

An automatic registration and landmark technology, applied in the field of alignment system for liver surgery, can solve problems such as difficult image alignment

Pending Publication Date: 2021-02-12
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the image alignment problem more difficult if the organ is deformed during surgery as it usually does

Method used

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  • An alignment system for liver surgery
  • An alignment system for liver surgery
  • An alignment system for liver surgery

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] Embodiments described herein provide the surgeon or surgical team with 2D representations of 3D landmarks of an organ or region of interest aligned with the current 2D laparoscopic viewing angle to a useful high degree of accuracy during a laparoscopic procedure. It is assumed that a 3-D representation of the organ or region is obtained and enabled for preoperative studies, and a 2-D laparoscopic image of the organ or region is obtained in real time during surgery.

[0013] The present invention offers benefits over current alignment approaches, which are time consuming and require specialized skills. Instead of requiring extensive input from an operator at various stages of the image alignment process, new methods of implementing these stages have been developed that are particularly suited to implementation by automatically operating computer-based processing systems. Also, it does not rely, as current practice typically does, on the use of additional specialized equi...

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Abstract

A method for automatic registration of landmarks in 3D and 2D images of an organ comprises: using a first set of coordinates of identified first, second and third landmarks of the organ, derived froma 3D surface representation of the organ, and a second set of coordinates of the landmarks, derived from 2D laparoscopic images of the organ, to register the three landmarks as identified in the 3D surface representation with the three landmarks as identified in the 2D images. The third landmark comprises a plurality of points defining a path between two points characterizing the first and secondlandmarks The identification of the first, second and third landmarks in the 3D representation and the 2D images, the derivation of the first and second sets of coordinates, and the registration, based on the derived first and second sets of coordinates, are performed automatically.

Description

Background technique [0001] Laparoscopic surgery is a minimally invasive type of abdominal surgery that involves the use of an optical imaging system – a laparoscope – to send live images to a video monitor during the surgical procedure. It is necessary to perform CT imaging prior to surgery, in preparation for proper surgical performance, and then utilize the results in relation to 2-D laparoscopic video imaging obtained while the patient is actually on the operating table. [0002] In current practice, the task of aligning 2-D images acquired in real-time during surgery with previously generated CT images, which are usually reconstructed to create a 3D image of the organ of interest, is performed manually or semi-automatically. -D representation. In both cases, this means relying on the skills of individuals or teams during surgery, requiring them to perform difficult and challenging image processing tasks in addition to the surgery itself. The image alignment problem is m...

Claims

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Application Information

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IPC IPC(8): G06T7/33G06T7/579G06T7/593G06T7/73
CPCG06T7/33G06T2207/30056G06T2207/10081G06T2207/10068G06T7/579G06T7/593G06T7/75G06T7/73G06T11/003A61B1/3132A61B6/5247A61B6/032A61B90/36A61B90/361A61B90/37G06T2210/41G06T2211/416G06T2207/30204A61B2090/364A61B2090/367A61B2090/371A61B2090/3762G06T7/74G06T7/85G06T7/337H04N13/25G06T7/0014G06T2207/20101G06T3/14
Inventor 余良吟
Owner SONY CORP
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