WO2002069807A1 - Three-dimensional image detecting apparatus using position sensor - Google Patents

Three-dimensional image detecting apparatus using position sensor Download PDF

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Publication number
WO2002069807A1
WO2002069807A1 PCT/KR2002/000374 KR0200374W WO02069807A1 WO 2002069807 A1 WO2002069807 A1 WO 2002069807A1 KR 0200374 W KR0200374 W KR 0200374W WO 02069807 A1 WO02069807 A1 WO 02069807A1
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WO
WIPO (PCT)
Prior art keywords
dimensional image
ultrasonic probe
ultrasonic
dimensional
sensor
Prior art date
Application number
PCT/KR2002/000374
Other languages
French (fr)
Inventor
Jae-Hoon Yoo
Jong-Sik Lee
Original Assignee
Easymedics Corporation
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
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Publication of WO2002069807A1 publication Critical patent/WO2002069807A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/13—Tomography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4245—Details of probe positioning or probe attachment to the patient involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient
    • A61B8/4254—Details of probe positioning or probe attachment to the patient involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient using sensors mounted on the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/13—Tomography
    • A61B8/14—Echo-tomography

Definitions

  • the present invention relates generally to three-dimensional image detecting apparatuses, and more particularly to a three-dimensional image detecting apparatus using a position sensor, in which the position sensor is mounted to a conventional two-dimensional ultrasonic diagnostic system, thus enabling three-dimensional images to be detected.
  • the conventional diagnostic system has tended to be replaced with the three-dimensional diagnostic system.
  • the ultrasonic diagnostic system designed for obtaining three-dimensional images must employ a special probe designed for three dimensions.
  • Conventional three-dimensional probes are classified into two types.
  • One is for a method in which an ultrasonic generating sensor included in a probe is designed as a duplicated structure, and the duplicated sensor is three-dimensionally arranged, thus obtaining a three-dimensional image.
  • the other is for a method for modifying the interior of a conventional two-dimensional probe to have a driving servomotor therein, and driving a two-dimensional ultrasonic generating sensor by a constant displacement angle under control, thus obtaining multiple two- dimensional images and getting a three-dimensional image from the two- dimensional images.
  • the conventional three-dimensional probe must have a special dual signal processing device, or is additionally provided with a motor driving control program. Accordingly, the conventional three-dimensional probe is disadvantageous in that it requires the expansion of the entire system and processing capacity thereof, and increases purchasing costs in comparison with the two-dimensional probe. Further, because it is impossible to adapt the conventional two- dimensional probe to a three-dimensional ultrasonic diagnostic system, the disposition of the conventional two-dimensional ultrasonic diagnostic system is difficult.
  • an object of the present invention is to provide a three-dimensional image detecting apparatus using a position sensor, in which the position sensor is mounted to a conventional two-dimensional ultrasonic diagnostic system, such that the apparatus simultaneously detects two- dimensional plane images and their positions, and thereafter displays a three- dimensional image by combining the two-dimensional plane images.
  • the present invention provides a three-dimensional image detecting apparatus comprising a two-dimensional ultrasonic diagnostic apparatus comprising an ultrasonic probe moved according to a user's operation, an ultrasonic sensor arranged in a center of the ultrasonic probe for transmitting/receiving an ultrasonic, and an image conversion unit for receiving a sensing signal from the ultrasonic sensor and converting the sensing signal into a plurality of two-dimensional image data; at least one position sensor arranged at one side of the ultrasonic probe for sensing a movement position of the ultrasonic probe; a position detection unit for receiving a position sensing signal from the position sensor, and detecting movement direction and movement displacement of the ultrasonic probe as position data according to the position sensing signal; and a graphic processing unit for receiving the position data of the ultrasonic probe and the two-dimensional image data from the position detection unit and the image conversion unit, respectively, combining the two-dimensional image data according to the position data of the ultrasonic probe, and displaying the combined result as
  • Fig. 1 is a block diagram of a three-dimensional image detecting apparatus using a position sensor according to a preferred embodiment of the present invention
  • Fig. 2a is an example view showing a scanned image obtained when a diseased body section is scanned by an ultrasonic sensor in the three-dimensional image detecting apparatus of this invention
  • Fig. 2b is an example view showing several plane images obtained by an image conversion unit when both the ultrasonic sensor and the position sensor are used in the three-dimensional image detecting apparatus of this invention.
  • Fig. 2c is an example view showing a three-dimensional image displayed in the three-dimensional image detecting apparatus of this invention.
  • Fig. 1 is a block diagram of a three-dimensional image detecting apparatus using a position sensor according to a preferred embodiment of the present invention.
  • Fig. 2a is an example view showing the scanned image obtained when a diseased body section is scanned by an ultrasonic sensor in the three-dimensional image detecting apparatus of this invention.
  • Fig. 2b is an example view showing several plane images obtained by an image conversion unit when both the ultrasonic sensor and the position sensor are used in the three-dimensional image detecting apparatus.
  • Fig. 2c is an example view showing a three-dimensional image displayed in the three-dimensional image detecting apparatus.
  • the three-dimensional image detecting apparatus of this invention comprises an ultrasonic probe 10, an ultrasonic sensor 20, an image conversion unit 30, position sensors 100, a position detection unit 200, and a graphic processing unit 300.
  • the position sensors 100 each include a light emitting unit 110 and an optical sensor 120.
  • the ultrasonic probe 10 can be moved on parts of many unspecific subjects (bodies) by a user's manipulation.
  • the ultrasonic sensor 20 is arranged in the center of the upper portion of the ultrasonic probe 10, and serves to transmit/receive an ultrasonic and output a sensing signal.
  • the image conversion unit 30 receives the sensing signal from the ultrasonic sensor 20 and converts the sensing signal into a plurality of two- dimensional image data.
  • the position sensors 100 are arranged in both sides of the upper portion of the ultrasonic probe 10, and serve to sense the position of the ultrasonic probe 10 according to the movement of the ultrasonic probe 10.
  • the position detection unit 200 receives position sensing signals from the position sensors 100, and detects the movement direction and movement displacement of the ultrasonic probe 10 as position data according to the position sensing signals.
  • the graphic processing unit 300 receives the position data of the probe 10 and the two-dimensional image data respectively from the position detection unit 200 and the image conversion unit 30, combines a plurality of two- dimensional image data according to the position data, and displays a combined result as a three-dimensional image.
  • the light emitting unit 110 emits light containing an interference signal.
  • the optical sensor 120 receives light, which is emitted from the light emitting unit 110 and is reflected on a subject, and detects the movement position of the probe 10 corresponding to the received light.
  • the ultrasonic sensor 20 arranged in the center of the ultrasonic probe 10 transmits/receives an ultrasonic signal, and outputs a sensing signal.
  • the position sensors 100 arranged in both left and right sides of the ultrasonic probe 10 sense the movement positions of the ultrasonic probe 10 and output position sensing signals corresponding to the movement position.
  • the detection of a position of the ultrasonic probe 10 by the position sensors 100 is performed as follows.
  • the optical sensor 120 receives the light, which is emitted from the light emitting unit 110 and is reflected on the diseased body section of the patient, and detects the movement position of the probe 10 corresponding to the received light.
  • the image conversion unit 30 receives the sensing signal from the ultrasonic sensor 20, converts the sensing signal into a plurality of two- dimensional plane image data as shown in Fig. 2b, and outputs the image data.
  • the position detection unit 200 receives the position sensing signals from the position sensors 100.
  • the position detection unit 200 evaluates the movement direction and the movement displacement of the ultrasonic probe 10 by analyzing the position sensing signals, and obtains the position data of the ultrasonic probe 10 from the evaluated result.
  • the graphic processing unit 300 receives both the two- dimensional plane image data and the position data respectively from the image conversion unit 30 and the position detection unit 200, combines the two- dimensional plane image data according to the position data of the ultrasonic probe 10 into three-dimensional image data, and displays a three-dimensional image corresponding to the three-dimensional image data as shown in Fig. 2c such that both the user and the patient see the image.
  • the detection of the three-dimensional image is performed as follows.
  • the two-dimensional plane image data obtained by the ultrasonic probe 10 are stored as pixel data, and the pixel data are converted into orthogonal coordinate values.
  • the various two-dimensional plane image data obtained by the probe 10 are combined according to the position of the probe 10 to obtain the three-dimensional image.
  • the obtained positions of the two-dimensional plane images and their corresponding rotation angles must be known for obtaining an exact three-dimensional image.
  • the present invention provides a three-dimensional image detecting apparatus using a position sensor, in which a position sensor is mounted to a conventional two-dimensional ultrasonic diagnostic system, such that the apparatus obtains various two-dimensional plane images, simultaneously detects positions where the two-dimensional plane images are obtained, and then combines the two-dimensional images into a three-dimensional image, thus saving purchase and maintenance costs for a high-expensive three-dimensional ultrasonic sensor.
  • the three-dimensional image detecting apparatus of this invention has an effect that it saves on diagnosis costs, thus providing more convenient diagnosis services to patients.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
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  • General Health & Medical Sciences (AREA)
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Abstract

Disclosed herein is a three-dimensional image detecting apparatus using a position sensor. The apparatus has at least one position sensor arranged at one side of an ultrasonic probe for sensing a movement position of the ultrasonic probe. A position detection unit receives a position sensing signal from the position sensor, and detects movement direction and movement displacement of the ultrasonic probe as position data according to the position sensing signal. A graphic processing unit receives the position data and the two-dimensional image data, combines the two-dimensional image data according to the position data of the ultrasonic probe, and displays the combined result as a three-dimensional image.

Description

THREE-DIMENSIONAL IMAGE DETECTING APPARATUS USING
POSITION SENSOR
Technical Field
The present invention relates generally to three-dimensional image detecting apparatuses, and more particularly to a three-dimensional image detecting apparatus using a position sensor, in which the position sensor is mounted to a conventional two-dimensional ultrasonic diagnostic system, thus enabling three-dimensional images to be detected.
Background Art
As well known to those skilled in the art, most typical ultrasonic sensors (probe or transducer) used in conventional medical ultrasonic diagnostic systems are constructed to obtain two-dimensional plane images. Recently, as a diagnostic method (one of medical diagnostic methods) using a three-dimensional image has proposed, a new three-dimensional diagnostic system is introduced.
Accordingly, the conventional diagnostic system has tended to be replaced with the three-dimensional diagnostic system.
However, in order to use the new diagnostic system for executing the three-dimensional diagnostic method, the ultrasonic diagnostic system designed for obtaining three-dimensional images must employ a special probe designed for three dimensions.
Conventional three-dimensional probes are classified into two types. One is for a method in which an ultrasonic generating sensor included in a probe is designed as a duplicated structure, and the duplicated sensor is three-dimensionally arranged, thus obtaining a three-dimensional image. The other is for a method for modifying the interior of a conventional two-dimensional probe to have a driving servomotor therein, and driving a two-dimensional ultrasonic generating sensor by a constant displacement angle under control, thus obtaining multiple two- dimensional images and getting a three-dimensional image from the two- dimensional images.
However, the conventional three-dimensional probe must have a special dual signal processing device, or is additionally provided with a motor driving control program. Accordingly, the conventional three-dimensional probe is disadvantageous in that it requires the expansion of the entire system and processing capacity thereof, and increases purchasing costs in comparison with the two-dimensional probe. Further, because it is impossible to adapt the conventional two- dimensional probe to a three-dimensional ultrasonic diagnostic system, the disposition of the conventional two-dimensional ultrasonic diagnostic system is difficult.
Disclosure of the Invention
Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a three-dimensional image detecting apparatus using a position sensor, in which the position sensor is mounted to a conventional two-dimensional ultrasonic diagnostic system, such that the apparatus simultaneously detects two- dimensional plane images and their positions, and thereafter displays a three- dimensional image by combining the two-dimensional plane images.
In order to accomplish the above object, the present invention provides a three-dimensional image detecting apparatus comprising a two-dimensional ultrasonic diagnostic apparatus comprising an ultrasonic probe moved according to a user's operation, an ultrasonic sensor arranged in a center of the ultrasonic probe for transmitting/receiving an ultrasonic, and an image conversion unit for receiving a sensing signal from the ultrasonic sensor and converting the sensing signal into a plurality of two-dimensional image data; at least one position sensor arranged at one side of the ultrasonic probe for sensing a movement position of the ultrasonic probe; a position detection unit for receiving a position sensing signal from the position sensor, and detecting movement direction and movement displacement of the ultrasonic probe as position data according to the position sensing signal; and a graphic processing unit for receiving the position data of the ultrasonic probe and the two-dimensional image data from the position detection unit and the image conversion unit, respectively, combining the two-dimensional image data according to the position data of the ultrasonic probe, and displaying the combined result as a three-dimensional image.
Brief Description of the Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a block diagram of a three-dimensional image detecting apparatus using a position sensor according to a preferred embodiment of the present invention;
Fig. 2a is an example view showing a scanned image obtained when a diseased body section is scanned by an ultrasonic sensor in the three-dimensional image detecting apparatus of this invention;
Fig. 2b is an example view showing several plane images obtained by an image conversion unit when both the ultrasonic sensor and the position sensor are used in the three-dimensional image detecting apparatus of this invention; and
Fig. 2c is an example view showing a three-dimensional image displayed in the three-dimensional image detecting apparatus of this invention.
Best Mode for Carrying Out the Invention
Fig. 1 is a block diagram of a three-dimensional image detecting apparatus using a position sensor according to a preferred embodiment of the present invention. Fig. 2a is an example view showing the scanned image obtained when a diseased body section is scanned by an ultrasonic sensor in the three-dimensional image detecting apparatus of this invention. Fig. 2b is an example view showing several plane images obtained by an image conversion unit when both the ultrasonic sensor and the position sensor are used in the three-dimensional image detecting apparatus. Fig. 2c is an example view showing a three-dimensional image displayed in the three-dimensional image detecting apparatus.
As shown in Fig. 1, the three-dimensional image detecting apparatus of this invention comprises an ultrasonic probe 10, an ultrasonic sensor 20, an image conversion unit 30, position sensors 100, a position detection unit 200, and a graphic processing unit 300. The position sensors 100 each include a light emitting unit 110 and an optical sensor 120.
The ultrasonic probe 10 can be moved on parts of many unspecific subjects (bodies) by a user's manipulation. The ultrasonic sensor 20 is arranged in the center of the upper portion of the ultrasonic probe 10, and serves to transmit/receive an ultrasonic and output a sensing signal. The image conversion unit 30 receives the sensing signal from the ultrasonic sensor 20 and converts the sensing signal into a plurality of two- dimensional image data. Subsequently, the position sensors 100 are arranged in both sides of the upper portion of the ultrasonic probe 10, and serve to sense the position of the ultrasonic probe 10 according to the movement of the ultrasonic probe 10. The position detection unit 200 receives position sensing signals from the position sensors 100, and detects the movement direction and movement displacement of the ultrasonic probe 10 as position data according to the position sensing signals.
Moreover, the graphic processing unit 300 receives the position data of the probe 10 and the two-dimensional image data respectively from the position detection unit 200 and the image conversion unit 30, combines a plurality of two- dimensional image data according to the position data, and displays a combined result as a three-dimensional image.
In the position sensors 100, the light emitting unit 110 emits light containing an interference signal. The optical sensor 120 receives light, which is emitted from the light emitting unit 110 and is reflected on a subject, and detects the movement position of the probe 10 corresponding to the received light.
Hereinafter, the operation of the three-dimensional image detecting apparatus using the position sensor of this invention is described in detail.
First, when a patient visits a hospital for ultrasonic diagnosis, an operator (a doctor for example) using the ultrasonic diagnostic system shown in Fig. 1 moves the ultrasonic probe 10 onto a diseased body section of the patient.
Then, as shown in Fig. 2a, the ultrasonic sensor 20 arranged in the center of the ultrasonic probe 10 transmits/receives an ultrasonic signal, and outputs a sensing signal. The position sensors 100 arranged in both left and right sides of the ultrasonic probe 10 sense the movement positions of the ultrasonic probe 10 and output position sensing signals corresponding to the movement position.
In this case, the detection of a position of the ultrasonic probe 10 by the position sensors 100 is performed as follows. When the light emitting unit 110 of the position sensors 100 emits light containing an interference signal, the optical sensor 120 receives the light, which is emitted from the light emitting unit 110 and is reflected on the diseased body section of the patient, and detects the movement position of the probe 10 corresponding to the received light. Meanwhile, the image conversion unit 30 receives the sensing signal from the ultrasonic sensor 20, converts the sensing signal into a plurality of two- dimensional plane image data as shown in Fig. 2b, and outputs the image data. The position detection unit 200 receives the position sensing signals from the position sensors 100. The position detection unit 200 evaluates the movement direction and the movement displacement of the ultrasonic probe 10 by analyzing the position sensing signals, and obtains the position data of the ultrasonic probe 10 from the evaluated result.
Thereby, the graphic processing unit 300 receives both the two- dimensional plane image data and the position data respectively from the image conversion unit 30 and the position detection unit 200, combines the two- dimensional plane image data according to the position data of the ultrasonic probe 10 into three-dimensional image data, and displays a three-dimensional image corresponding to the three-dimensional image data as shown in Fig. 2c such that both the user and the patient see the image.
More specifically, the detection of the three-dimensional image is performed as follows. The two-dimensional plane image data obtained by the ultrasonic probe 10 are stored as pixel data, and the pixel data are converted into orthogonal coordinate values. At this time, the various two-dimensional plane image data obtained by the probe 10 are combined according to the position of the probe 10 to obtain the three-dimensional image. Here, the obtained positions of the two-dimensional plane images and their corresponding rotation angles must be known for obtaining an exact three-dimensional image.
Industrial Applicability
As described above, the present invention provides a three-dimensional image detecting apparatus using a position sensor, in which a position sensor is mounted to a conventional two-dimensional ultrasonic diagnostic system, such that the apparatus obtains various two-dimensional plane images, simultaneously detects positions where the two-dimensional plane images are obtained, and then combines the two-dimensional images into a three-dimensional image, thus saving purchase and maintenance costs for a high-expensive three-dimensional ultrasonic sensor. Further, the three-dimensional image detecting apparatus of this invention has an effect that it saves on diagnosis costs, thus providing more convenient diagnosis services to patients.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

Claims
1. A three-dimensional image detecting apparatus comprising: a two-dimensional ultrasonic diagnostic apparatus comprising an ultrasonic probe moved according to a user's operation, an ultrasonic sensor arranged in a center of the ultrasonic probe for transmitting/receiving an ultrasonic, and an image conversion unit for receiving a sensing signal from the ultrasonic sensor and converting the sensing signal into a plurality of two-dimensional image data; at least one position sensor arranged at one side of the ultrasonic probe for sensing a movement position of the ultrasonic probe ; a position detection unit for receiving a position sensing signal from the position sensor, and detecting movement direction and movement displacement of the ultrasonic probe as position data according to the position sensing signal; and a graphic processing unit for receiving the position data of the ultrasonic probe and the two-dimensional image data from the position detection unit and the image conversion unit, respectively, combining the two-dimensional image data according to the position data of the ultrasonic probe, and displaying the combined result as a three-dimensional image.
2. The apparatus according to claim 1, wherein the position sensor includes: a light emitting unit for emitting light containing an interference signal; and an optical sensor for receiving light, which is emitted from the light emitting unit and reflected on a subject, and sensing the movement position of the ultrasonic probe corresponding to the received light.
PCT/KR2002/000374 2001-03-06 2002-03-05 Three-dimensional image detecting apparatus using position sensor WO2002069807A1 (en)

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Application Number Priority Date Filing Date Title
KR1020010011506A KR20020071377A (en) 2001-03-06 2001-03-06 Device for detecting 3 dimension image using positioning sensor
KR2001/11506 2001-03-06

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Cited By (2)

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EP1629779A1 (en) * 2004-08-31 2006-03-01 Kabushiki Kaisha Toshiba Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
EP1847222A1 (en) * 2005-02-09 2007-10-24 Hitachi Medical Corporation Ultrasonographic device and ultrasonographic method

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KR20200091624A (en) * 2019-01-23 2020-07-31 삼성메디슨 주식회사 Ultrasound diagnostic apparatus and method for operating the same

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KR940019279A (en) * 1993-02-25 1994-09-14 오오시로 히데오 Multi-Dimensional Visual Device for Biological Tissue Observation
JP2000201926A (en) * 1999-01-18 2000-07-25 Toshiba Corp Ultrasonograph system

Cited By (10)

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Publication number Priority date Publication date Assignee Title
EP1629779A1 (en) * 2004-08-31 2006-03-01 Kabushiki Kaisha Toshiba Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
US8758254B2 (en) 2004-08-31 2014-06-24 Kabushiki Kaisha Toshiba Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
US9204863B2 (en) 2004-08-31 2015-12-08 Kabushiki Kaisha Toshiba Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
US9237882B2 (en) 2004-08-31 2016-01-19 Kabushiki Kaisha Toshiba Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
US9307959B2 (en) 2004-08-31 2016-04-12 Kabushiki Kaisha Toshiba Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
US9364198B2 (en) 2004-08-31 2016-06-14 Kabushiki Kaisha Toshiba Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
US9445788B2 (en) 2004-08-31 2016-09-20 Toshiba Medical Systems Corporation Ultrasound probe diagnosing apparatus, ultrasound diagnostic apparatus, and ultrasound probe diagnosing method
EP1847222A1 (en) * 2005-02-09 2007-10-24 Hitachi Medical Corporation Ultrasonographic device and ultrasonographic method
EP1847222A4 (en) * 2005-02-09 2010-03-03 Hitachi Medical Corp Ultrasonographic device and ultrasonographic method
US8617075B2 (en) 2005-02-09 2013-12-31 Hitachi Medical Corporation Ultrasonic diagnostic apparatus and ultrasonic imaging method

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