Method and system for localizing body structures

A body and dosimetry technology, applied in the fields of application, radiation therapy, surgical instrument parts, etc., can solve the problems of increasing the economic burden of patients, imposing clinical work burden, etc., and achieving good clinical results

Inactive Publication Date: 2016-03-09
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such methods impose additional clinical workload and increase patient financial burden, or other benefits may be diminished due to patient motion and image distortion caused by patient physiological changes

Method used

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  • Method and system for localizing body structures
  • Method and system for localizing body structures
  • Method and system for localizing body structures

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Embodiment Construction

[0033] Embodiments of the invention are now described based on an intelligent sensing system and method for the identification and localization of the prostatic urethra, an example of a key body structure, using US-based tracking as an example of an ultrasound-based localization or tracking technique. .

[0034] figure 1 The schematic anatomy of the prostatic urethra 30 is shown, which is approximately 3.5 cm long and passes through the prostatic gland 10 to the bladder 20 . Urethral complications after radiation therapy include urethritis, urethral stricture, and urethral fistula. Prostate urethro-rectal fistulas have been reported to occur in 1% of patients after brachytherapy for prostate cancer. By having accurate knowledge of the shape and position of the prostatic urethra 30 (as achieved by this embodiment), urethral complications can be substantially reduced and adverse effects on the prostatic urethra can be largely avoided.

[0035] figure 2 A schematic arrangeme...

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Abstract

The invention relates to a system and method in which a Foley catheter (70) or other medical tool which is equipped with ultrasound (US) sensor(s) (72) is inserted into the prostatic urethra. Based on analysis of the US signal received by these US sensors (72) as the US beams from a transrectal US (TRUS) probe (40) or other ultrasound probe sweep the field of view, it is possible to precisely detect and track these US sensors (72) in the same frame of reference as the TRUS images, thereby precisely delineating the Foley catheter and the course of the prostatic urethra. During the procedure, before each seed is dropped, the delivered dose to the prostatic urethra can be computed based on real-time tracking and segmentation of prostatic urethra and dose radiation based on previously dropped seeds and if necessary, the procedure can be re-planned automatically.

Description

technical field [0001] The present invention relates to methods and systems for locating body structures. Background technique [0002] Prostate cancer is the most common organ malignancy in American men. Several treatments have been proposed for treating prostate cancer. One of these is prostate brachytherapy, which refers to the placement of permanent radioactive seeds (seeds) or temporary radioactive sources (inside hollow catheters) inside the prostate using insertion through the perineum. Typically, treatment planning and placement of needles or catheters relies on the intensive use of transrectal ultrasound imaging (TRUS). [0003] A major drawback of brachytherapy for the management of prostate cancer is that almost all patients experience some degree of urinary symptoms. Urethral irritation and obstruction are well documented short-term complications of modern brachytherapy techniques. This may be mainly due to accidental undesired doses being delivered to the ur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10A61M25/01A61B5/06A61B8/08
CPCA61B5/065A61B8/0841A61B8/085A61B8/12A61B8/4245A61B8/4254A61B2018/00547A61M25/0017A61M25/0108A61M25/04A61M27/00A61M2025/0166A61N5/1027A61N2005/1058A61B5/064
Inventor A·M·塔赫玛塞比马拉古奥施F·G·G·M·维尼翁S·巴拉特E·德赫甘马尔瓦斯特A·K·贾殷
Owner KONINKLJIJKE PHILIPS NV
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