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WO2016002992A1 - Système de compensation de distorsion d'image pour un dispositif de diagnostic ultrasonore tridimensionnel - Google Patents

Système de compensation de distorsion d'image pour un dispositif de diagnostic ultrasonore tridimensionnel Download PDF

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Publication number
WO2016002992A1
WO2016002992A1 PCT/KR2014/006021 KR2014006021W WO2016002992A1 WO 2016002992 A1 WO2016002992 A1 WO 2016002992A1 KR 2014006021 W KR2014006021 W KR 2014006021W WO 2016002992 A1 WO2016002992 A1 WO 2016002992A1
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WO
WIPO (PCT)
Prior art keywords
image
ultrasound
dimensional
distortion
moving speed
Prior art date
Application number
PCT/KR2014/006021
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English (en)
Korean (ko)
Inventor
이민화
Original Assignee
한국디지털병원수출사업협동조합
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국디지털병원수출사업협동조합 filed Critical 한국디지털병원수출사업협동조합
Priority to PCT/KR2014/006021 priority Critical patent/WO2016002992A1/fr
Publication of WO2016002992A1 publication Critical patent/WO2016002992A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/80—Geometric correction
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10132—Ultrasound image

Definitions

  • the present invention relates to an image image distortion correction system for a 3D ultrasound diagnostic apparatus.
  • the present invention relates to a method for correcting a problem in which an error of an image obtained by a diagnostic operator operating a 3D ultrasound diagnostic apparatus increases.
  • Image for 3D ultrasound diagnosis to improve 3D ultrasound image quality by correcting image distortion of 3D ultrasound image by selecting and rendering 2D ultrasound image for 3D rendering using moving speed and position
  • An image distortion correction system to improve 3D ultrasound image quality by correcting image distortion of 3D ultrasound image by selecting and rendering 2D ultrasound image for 3D rendering using moving speed and position
  • an ultrasound image diagnosis apparatus mainly used to image organs and fetuses in the human body may be mentioned.
  • an ultrasound imager can steer the radiation angle of an ultrasound to the human body. It is possible to image specific points inside, there is no damage to the human body, such as radiation, and there is an advantage that the image can be obtained in a relatively short time than other medical equipment for internal imaging.
  • Means and / or devices for mutually converting an ultrasonic signal and an electrical signal are essential in order to implement an image with an ultrasound image diagnosis apparatus, which is called an ultrasound probe or an ultrasound transducer in the art.
  • the ultrasonic probe reduces the difference in acoustic impedance between the piezoelectric layer and the human body so that the piezoelectric layer vibrates and converts electrical and acoustic signals to each other.
  • an ultrasonic module comprising a matching layer, a lens layer for focusing the ultrasonic waves traveling forward of the piezoelectric layer to a specific point, and a sound absorbing layer for preventing the distortion of the ultrasonic waves by preventing the propagation of the ultrasonic waves behind the piezoelectric layer.
  • a general medical ultrasound probe has a plurality of ultrasound elements, except that it is composed of a single ultrasound element for general and special use.
  • Medical ultrasonic probes can be classified into various criteria such as the number of ultrasonic elements, the arrangement of ultrasonic elements or the shape of the arrangement axis of ultrasonic elements, or their application fields. It can be divided into a multi-element type ultrasonic probe.
  • the multi-element type ultrasonic probe includes a 1-dimensional array type ultrasonic probe in which ultrasonic elements are arranged on a single axis according to an arrangement method of ultrasonic elements, and 2 in which the ultrasonic elements are arranged on a plurality of axes crossing each other.
  • the 1 dimensional array type ultrasonic probe is a linear array ultrasonic probe and a curvilinear array ultrasonic probe according to the shape of the array axis of the ultrasonic elements. And so on.
  • a diagnostic person uses a manual operation to move the one-dimensional array ultrasonic probe or mechanically move the one-dimensional array ultrasonic probe.
  • the quality of the image is extremely poor due to the uneven contrast interval and the error of the acquired image is increased according to the diagnostic person. There is a problem.
  • Korean Patent No. 10-1076917 is disclosed, and a PRF signal input to an ultrasonic probe is disclosed. (Pulse Repetition Frequency Signal) intervals and based on the control of the drive flow of the motor to control the backlash (Backlash), the sync with the PRF signal in the non-linear ultrasonic probe that allows the perfect sync with the PRF signal It is about controlling.
  • Pulse Repetition Frequency Signal Pulse Repetition Frequency Signal
  • the conventional technology is capable of improving the image quality of the ultrasound image by adjusting the backlash by controlling the drive flow of the rotary motor embedded in the ultrasound probe, so that the synchronization with the PRF signal is achieved. Careful attention should be paid to the parts caused by the impact of the driving of the rotary motor built in.
  • the present invention has been made to solve the problems of the prior art as described above is to move the ultrasonic probe to the two-dimensional ultrasound image obtained in order to solve the problem that the error of the image is obtained according to the diagnostic operator operating the three-dimensional ultrasound diagnostic device
  • the purpose of the present invention is to improve the quality of a 3D ultrasound image by correcting an image distortion of the 3D ultrasound image by selecting and rendering a 2D ultrasound image for 3D rendering using speed and position.
  • the present invention has another object for detecting the moving speed and position of the ultrasonic probe with higher reliability by detecting the moving speed and position of the ultrasonic probe by a plurality of means rather than one means.
  • a three-dimensional ultrasound diagnostic apparatus comprising: a two-dimensional ultrasound image acquisition unit configured to acquire a plurality of two-dimensional ultrasound images of a target site of a subject for a predetermined time; A detector for detecting a moving speed and a position of the ultrasonic probe provided in the 2D ultrasound image acquisition unit; A distortion image corrector for correcting image distortion of a 3D ultrasound image by selecting the 2D ultrasound image by using a moving speed and a position of the ultrasound probe detected by the detector; A rendering unit configured to render a 2D ultrasound image selected by the distortion image correcting unit and configure a 3D ultrasound image; And a display unit for displaying the 3D ultrasound image.
  • the image image distortion correction system for the 3D ultrasound diagnostic apparatus of the present invention selects the 2D image in consideration of the moving speed and position of the acoustic wave probe to correct the image distortion when rendering in 3D to improve the quality of the 3D ultrasound image. It is effective to improve.
  • FIG. 1 is a view showing a change in the movement speed generated with time during a general hand operation
  • FIG. 3 is a block diagram of an image image distortion correction system for a three-dimensional ultrasound diagnostic apparatus according to the present invention.
  • FIG. 3 is a block diagram of an image image distortion correction system for a three-dimensional ultrasound diagnostic apparatus according to the present invention.
  • the system for correcting image image distortion of the 3D ultrasound diagnostic apparatus of the present invention is a 2D ultrasound image acquisition unit 100 for a predetermined time period of the ultrasound probe with respect to the target site of the subject.
  • a plurality of two-dimensional ultrasound images are obtained by scanning.
  • the 3D ultrasound image generated by 3D rendering of the plurality of 2D ultrasound images may cause distortion of the image image.
  • the ultrasonic probe provided in the 2D ultrasound image acquisition unit 100 may be used.
  • a distortion image correction unit 300 including a detection unit 200 for detecting a movement speed and a position, and selecting the 2D ultrasound image by using the movement speed and position of the ultrasonic probe detected by the detection unit. Corrects the image distortion of the 3D ultrasound image, and renders the selected 2D ultrasound image by the rendering unit 400
  • the 3D ultrasound image is displayed on the display unit 500 by synthesizing the sound wave image.
  • the detection unit 200 for detecting the moving speed and the position of the ultrasonic probe extracts the feature points of the ultrasonic probe from the image photographed by the image capturing means 210, The position is detected and transmitted to the distortion image corrector 300.
  • Detecting the moving speed and the position of the ultrasonic probe may be detected by the contour recognition of the ultrasonic probe, but it is more preferable to detect the moving speed and the position of the ultrasonic probe by extracting feature points for reducing the throughput of data.
  • the image capturing means 210 is provided in the main body of the 3D ultrasound diagnostic apparatus, acquires the movement of the marker formed on the ultrasound probe, stores the acquired image signal as image data, and then stores information on the marker through image processing. Acquire.
  • the detection unit is further provided by attaching, incorporating or integrating the sensor means 220 which detects the moving speed and position in addition to the image photographing means 210 to the ultrasonic probe, and the sensor means 220 has an output value by wire or wirelessly.
  • the distortion image correction unit 300 is transmitted.
  • the sensor means 220 is a six-axis sensor that senses motion and direction in space, and can realize the function of the six-axis sensor by combining a single or a plurality of sensors among geomagnetic sensors, acceleration sensors, gyro sensors, and optical sensors. It is selected and implemented.
  • the two-dimensional ultrasound image acquisition of the two-dimensional ultrasound image acquisition unit 100 may be obtained in real time to render the acquired image at least ten times per second.
  • the distorted image corrector 300 synchronizes the 2D ultrasound image acquired by the 2D ultrasound image acquirer 100 and the moving speed and the position detected by the detector 200 with each other in a 1: 1 time, and stores the temporal information.
  • the moving speed and position to be synchronized by using one or two moving speeds and positions using the moving speeds and positions detected by the image capturing means 210 and the sensor means 220 of the detector 200, respectively. It is possible to determine, and more preferably, it is possible to improve the reliability of the data by arithmetically determining the two moving speeds and positions detected by the image capturing means 210 and the sensor means 22.
  • the two-dimensional ultrasound image for rendering in three dimensions in the rendering unit 400 is selected in consideration of the moving speed and position in the distortion image correction unit 300, the two-dimensional ultrasound image in the distortion image correction unit 300 It is possible to select the selected two-dimensional ultrasound image so as to be equally spaced temporally and spatially, and more preferably, it is preferably selected so as to be spaced at equal intervals so that the subject portion of the subject can be uniformly rendered. Do.
  • a warping algorithm is used to find an alignment position by comparing partial regions at the same distance from the center of the image in consideration of the movement motion factors of the 2D image.
  • a corresponding point of the 2D ultrasound image is searched using a dimension dynamic wrapping (DDW) algorithm.
  • DSW dimension dynamic wrapping

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

La présente invention concerne un système de compensation de distorsion d'image pour un dispositif de diagnostic ultrasonore tridimensionnel, le système de compensation de distorsion d'image pour un dispositif de diagnostic ultrasonore tridimensionnel ayant l'objectif de résoudre le problème d'augmentation de l'erreur d'une image obtenue en fonction du diagnosticien qui utilise le dispositif de diagnostic ultrasonore tridimensionnel, le problème étant résolu en sélectionnant une image ultrasonore bidimensionnelle pour restituer une image ultrasonore bidimensionnelle obtenue en une image tridimensionnelle par utilisation de la vitesse de déplacement et de l'emplacement d'une sonde ultrasonore, et restituer l'image ultrasonore bidimensionnelle en une image tridimensionnelle, permettant ainsi de compenser une distorsion d'image dans l'image ultrasonore tridimensionnelle de façon à augmenter la qualité de l'image ultrasonore tridimensionnelle.
PCT/KR2014/006021 2014-07-04 2014-07-04 Système de compensation de distorsion d'image pour un dispositif de diagnostic ultrasonore tridimensionnel WO2016002992A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2014/006021 WO2016002992A1 (fr) 2014-07-04 2014-07-04 Système de compensation de distorsion d'image pour un dispositif de diagnostic ultrasonore tridimensionnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2014/006021 WO2016002992A1 (fr) 2014-07-04 2014-07-04 Système de compensation de distorsion d'image pour un dispositif de diagnostic ultrasonore tridimensionnel

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WO2016002992A1 true WO2016002992A1 (fr) 2016-01-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107928708A (zh) * 2017-12-12 2018-04-20 成都优途科技有限公司 自由三维脊柱超声成像系统及控制方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6554771B1 (en) * 2001-12-18 2003-04-29 Koninklijke Philips Electronics N.V. Position sensor in ultrasound transducer probe
WO2010106379A1 (fr) * 2009-03-20 2010-09-23 Mediwatch Uk Limited Sonde à ultrasons avec accéléromètre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6554771B1 (en) * 2001-12-18 2003-04-29 Koninklijke Philips Electronics N.V. Position sensor in ultrasound transducer probe
WO2010106379A1 (fr) * 2009-03-20 2010-09-23 Mediwatch Uk Limited Sonde à ultrasons avec accéléromètre

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ALAN BRANDON: "Epson Toyocom develops tiny 6-axis sensor for motion tracking", GIZMAG, 16 March 2010 (2010-03-16), XP055250358, Retrieved from the Internet <URL:http://www.gizmag.com/epson-toyocom-ah61001r-6-axis-sensor-worlds-smallest/14529> *
PURANG ABOLMAESUMI ET AL.: "Image-guided control of a robot for medical ultrasound", ROBOTICS AND AUTOMATION, IEEE TRANSACTIONS ON, vol. 18, no. 1, February 2002 (2002-02-01), pages 11 - 23, XP055033252, Retrieved from the Internet <URL:http://ieeexplore.ieee.org/xpl/loginjsp?tp=&amumber=988970> *
Q. H. HUANG ET AL.: "Development of a portable 3D ultrasound imaging system for musculoskeletal tissues", ULTRASONICS, vol. 43, no. 3, January 2005 (2005-01-01), pages 153 - 163, XP027612735, Retrieved from the Internet <URL:http://www.sciencedirect.com/science/article/pii/50041624X04002185#> *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107928708A (zh) * 2017-12-12 2018-04-20 成都优途科技有限公司 自由三维脊柱超声成像系统及控制方法

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