WO2012090503A1 - Dispositif d'affichage tridimensionnel et procédé d'affichage tridimensionnel - Google Patents

Dispositif d'affichage tridimensionnel et procédé d'affichage tridimensionnel Download PDF

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Publication number
WO2012090503A1
WO2012090503A1 PCT/JP2011/007351 JP2011007351W WO2012090503A1 WO 2012090503 A1 WO2012090503 A1 WO 2012090503A1 JP 2011007351 W JP2011007351 W JP 2011007351W WO 2012090503 A1 WO2012090503 A1 WO 2012090503A1
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WO
WIPO (PCT)
Prior art keywords
lattice
image
breast
images
spherical
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Application number
PCT/JP2011/007351
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English (en)
Japanese (ja)
Inventor
孝夫 桑原
靖子 八尋
大田　恭義
玲 長谷川
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富士フイルム株式会社
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Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Publication of WO2012090503A1 publication Critical patent/WO2012090503A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/502—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of breast, i.e. mammography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/025—Tomosynthesis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T19/00—Manipulating 3D models or images for computer graphics
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2210/00—Indexing scheme for image generation or computer graphics
    • G06T2210/41—Medical

Definitions

  • the present invention relates to a stereoscopic display device and a stereoscopic display method. More specifically, the present invention relates to a stereoscopic display device and a stereoscopic display method for stereoscopically displaying a breast by displaying two captured images captured by radiation irradiated from two different imaging directions on the breast.
  • Patent Document 1 proposes a technique for grasping a two-dimensional distance from a nipple by drawing and displaying a concentric circle centered on the nipple on a radiographic image so that the interval between the concentric circles is constant. Has been.
  • an object of the present invention is to provide a stereoscopic display device and a stereoscopic display method that allow an observer to easily recognize the distance from a nipple in a radiographic image of a stereoscopically displayed breast.
  • a lattice image forming unit for forming two lattice images obtained by observing a spherical lattice structure formed from spherical surfaces having different radii from the same center as lattice surfaces from two photographing directions;
  • An image composition unit for compositing two photographed images and two grid images for each photographing direction in a state in which the nipple and the center are matched, and this composite image for the two composite images
  • an image processing unit that removes a portion of the lattice image that is not overlapped with the breast image.
  • the spherical lattice structure may be a spherical lattice surface that is equally spaced in the radial direction, and the position of the nipple is detected from a photographed image of the breast.
  • a nipple position detector may be provided.
  • the stereoscopic display method of the present invention is a stereoscopic display method for stereoscopically displaying a breast by displaying two captured images obtained by radiating breasts from two different imaging directions.
  • Two lattice images obtained by observing a spherical lattice structure in which spherical surfaces of spherical groups having different radii as lattice surfaces are observed from two imaging directions are formed, and the breast nipple and the center are aligned with each other.
  • a portion of the lattice image synthesized with the composite image for the two composite images synthesized with the two captured images and the two lattice images for each photographing direction and not overlapping with the breast image It is characterized by removing.
  • two spherical lattice structures in which spherical surfaces having different radii from the same center are formed as lattice surfaces are observed from two photographing directions.
  • two photographed images and two lattice images are synthesized for each photographing direction, and the two synthesized images are combined.
  • Part of the spherical lattice structure centered on the nipple is synthesized and displayed on the breast by removing the part of the grid image synthesized with this synthesized image that does not overlap with the breast image. The observer can easily grasp the three-dimensional distance from the calcification in the breast and the nipple of the tumor.
  • Schematic configuration diagram of radiation display system Partial front view of radiation imaging equipment
  • Schematic configuration diagram of a stereoscopic display device Diagram showing spherical lattice structure and lattice image Figure showing a composite image that has undergone image processing The figure which shows the display of the monitor of a stereoscopic display device Flow chart showing processing of stereoscopic display device
  • the radiation imaging apparatus 10 irradiates the compressed breast M with radiation from two different imaging directions to acquire two captured images GL and GR, and three-dimensionally stores the image files GF of the two captured images GL and GR.
  • the image is distributed to the stereoscopic display device 40.
  • the stereoscopic display device 40 displays the breast M stereoscopically by displaying the two photographed images GL and GR.
  • FIG. 2 shows a part of a front view of the radiation imaging apparatus 10.
  • the radiation imaging apparatus 10 includes a base 11, a rotary shaft 12 that is movable in the vertical direction (Z direction) with respect to the base 11, and that is rotatable. 11 is provided with an arm portion 13 coupled to the arm portion 13.
  • a radiation detector 15 such as a flat panel detector and a detector controller 33 that controls reading of a charge signal from the radiation detector 15 are provided inside the imaging table 14.
  • the imaging table 14 includes a charge amplifier that converts a charge signal read from the radiation detector 15 into a voltage signal, a correlated double sampling circuit that samples a voltage signal output from the charge amplifier, a voltage A circuit board provided with an AD conversion unit for converting a signal into a digital signal is also installed.
  • the imaging table 14 is configured to be rotatable with respect to the arm unit 13, and even when the arm unit 13 rotates with respect to the base 11, the direction of the imaging table 14 is fixed to the base 11. Become.
  • the radiation detector 15 can repeatedly perform recording and reading of a radiation image, and may use a so-called direct type radiation image detector that directly receives radiation and generates a charge, A so-called indirect radiation image detector that converts radiation once into visible light and converts the visible light into a charge signal may be used.
  • a radiation source 17 and a radiation source controller 32 are housed inside the radiation irradiation unit 16.
  • the radiation source controller 32 controls the timing of irradiating radiation from the radiation source 17 and the radiation generation conditions (tube current (mA), irradiation time (ms), tube voltage (kV), etc.) in the radiation source 17. .
  • the control unit 30 includes a central processing unit (CPU), a storage device such as a semiconductor memory, a hard disk, and an SSD, and an input unit 30a.
  • the control unit 30 outputs predetermined control signals to the various controllers 31 to 34 to perform overall control of the radiation imaging apparatus 10.
  • the control unit 30 records the two captured images GL and GR detected by the radiation detector 15 by imaging from two different imaging directions.
  • the control unit 30 acquires information on the imaging angle ⁇ that each imaging direction makes a direction perpendicular to the detection surface 15 a of the radiation detector 15.
  • the control unit 30 stores the two captured images GL and GR in the image file GF, and describes two shooting angles ⁇ in the header of the image file GF. Then, the control unit 30 transmits the image file GF to the stereoscopic display device 40 in response to a distribution request from the stereoscopic display device 40.
  • the input unit 30a connected to the control unit 30 is configured by a pointing device such as a keyboard and a mouse, for example, and inputs a shooting condition including a shooting angle ⁇ for each shooting direction by a photographer and starts shooting. An instruction input or the like is received.
  • the breast M is set on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18. Then, in the input unit 30a, a shooting instruction is input by the photographer, and shooting starts.
  • the control unit 30 reads the shooting angle ⁇ and outputs information of the read shooting angle ⁇ to the arm controller 31.
  • the imaging angle ⁇ is an angle formed by the imaging direction and a direction perpendicular to the detection surface 15a of the radiation detector 15, as shown in FIG.
  • the clockwise direction is the positive direction and the counterclockwise direction is the negative direction.
  • the control signal that becomes the state is output.
  • the control unit 30 performs radiation irradiation and readout of the captured image GL to the radiation source controller 32 and the detector controller 33. Output control signal to do.
  • control signal radiation is emitted from the radiation source 17, and radiation obtained by imaging the breast from the imaging direction where the imaging angle ⁇ is + 2 ° is detected by the radiation detector 15, and the radiation detector 15 is detected by the detector controller 33.
  • the captured image signal is read out from.
  • the control unit 30 stores the captured image GL.
  • the control unit 30 stores the two captured images GL and GR in the image file GF, and transmits the image file GF to the stereoscopic display device 40 in response to a distribution request from the stereoscopic display device 40. At that time, the control unit 30 describes two shooting angles ⁇ in the header of the image file GF.
  • the stereoscopic display device 40 includes a computer 41 and a monitor 42 that displays two photographed images GL and GR.
  • a program for causing the computer 41 to function as the stereoscopic display device according to the present embodiment is installed.
  • the computer 41 includes a central processing unit (CPU) and a storage device such as a semiconductor memory, a hard disk, and an SSD, and the control unit 43, the lattice image forming unit 44, the nipple as shown in FIG.
  • a position detection unit 45, an image composition unit 46, an image processing unit 47, and a display control unit 48 are configured.
  • the lattice image forming unit 44 acquires information on the two shooting angles ⁇ described in the header of the image file GF, and, as shown in FIG. 4, each spherical surface group having different radii from the same center O is obtained.
  • Two lattice images ML and MR are formed by observing the spherical lattice structure SS formed as a lattice surface at two imaging angles ⁇ .
  • the spherical lattice structure SS is a spherical lattice surface that is equally spaced in the radial direction.
  • the spherical lattice structure SS is not particularly limited, and the spherical lattice surface is narrower as it is closer to the center O. It may be.
  • the distance between the spherical surfaces in the radial direction is about 1 mm to 75 mm, but is not particularly limited.
  • the nipple position detection unit 45 acquires two captured images GL and GR from the image file GF, and detects the position of the nipple MT on the captured images GL and GR.
  • the nipple position detection unit 45 detects the skin line of the breast M on the two photographed images GL and GR, and detects the position of the nipple MT by known image recognition or the like.
  • the present invention is not limited to this, and two captured images GL and GR may be displayed to receive an instruction of the position of the nipple MT from the observer and detect the position of the nipple MT.
  • the image processing unit 47 removes a portion that does not overlap the breast M from the two lattice images ML and MR that are combined with the two combined images CL and CR. Is to be applied.
  • the monitor 42 displays two composite images CL and CR to display the breast M including the spherical lattice structure SS in a three-dimensional manner.
  • the monitor 42 alternately displays two composite images CR and CL during stereoscopic display. This switching cycle is, for example, about (1 / several tens of seconds).
  • the observer stereoscopically wears stereoscopic glasses.
  • Stereoscopic glasses have a right-eye portion and a left-eye portion in which shutters such as liquid crystal shutters that open and close independently are incorporated.
  • the display controller 48 causes the stereoscopic glasses to open the left-eye portion and close the right-eye portion during the period in which the composite image CL is displayed, and conversely open the right-eye portion during the period in which the composite image CR is displayed.
  • the opening / closing control is performed in synchronization with the switching cycle of the two composite images CL and CR so that the left-eye portion is closed.
  • FIG. 7 is a flowchart showing processing of the stereoscopic display device 40.
  • the control unit 43 makes a distribution request for the captured images GL and GR to the radiation imaging apparatus 10 (step ST1), and receives an image file GF including the captured images GL and GR (step ST2).
  • the lattice image forming unit 44 acquires information on the two imaging angles ⁇ from the image file GF, and forms lattice images ML and MR in which the spherical lattice structure is observed at the two imaging angles ⁇ (step ST3).
  • the nipple position detection unit 45 reads the two captured images GL and GR from the image file GF, and detects the position of the nipple MT on the two captured images GR and GR (step ST4).
  • the image synthesizing unit 46 synthesizes the two photographed images GL and GR and the two lattice images ML and MR in a state where the nipple MT and the center O coincide with each other to form synthesized images CL and CR (step ST5). ).
  • the image processing unit 47 performs image processing on the combined images CL and CR to remove portions of the combined lattice images ML and MR that do not overlap with the image of the breast M (step ST6).
  • the display control unit 48 causes the monitor 42 to display the two composite images CL and CR that have undergone image processing, so that the breast M including the spherical lattice structure SS is three-dimensionally displayed (step ST7), and the processing ends.
  • the monitor 42 By removing a portion of ML and MR that does not overlap with the breast M, the monitor 42 displays the breast M including the spherical lattice structure SS centered on the nipple MT, so that the observer can easily Distance from nipple MT It can be grasped.
  • the spherical lattice structure SS is composed of spherical lattice surfaces that are equally spaced in the radial direction, the observer counts the number of lattices in the radial direction. Thus, the distance from the nipple MT can be easily grasped.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computer Graphics (AREA)
  • General Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

[Problème] Reconnaître aisément la distance depuis un mamelon dans un affichage tridimensionnel d'un sein, par irradiation avec un rayonnement depuis deux directions d'imagerie différentes et affichage des deux images acquises. [Solution] La présente invention concerne la formation de deux images de réseau qui observent depuis deux directions d'imagerie une structure de réseau sphérique (SS) ayant des surfaces sphériques d'un groupe de surfaces sphériques, chacune ayant un rayon différent depuis le même centre (O), formée en tant que surface de réseau de celles-ci. Les deux images capturées du sein (M) et les deux images de réseau sont composées dans chaque direction d'imagerie, avec le mamelon (MT) du sein (M) et le centre (O) alignés. La section dans les images de réseau composées qui ne chevauche pas le sein (M) est enlevée dans les deux images composites composées (CL, CR).
PCT/JP2011/007351 2010-12-28 2011-12-28 Dispositif d'affichage tridimensionnel et procédé d'affichage tridimensionnel WO2012090503A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201061427744P 2010-12-28 2010-12-28
US61/427,744 2010-12-28

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Publication Number Publication Date
WO2012090503A1 true WO2012090503A1 (fr) 2012-07-05

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60222919A (ja) * 1984-04-20 1985-11-07 Fujitsu Ltd 座標入力装置
JP2001212126A (ja) * 1999-12-02 2001-08-07 Ge Medical Syst Sa ３次元画像の自動レジストレーション方法
JP2010000133A (ja) * 2008-06-18 2010-01-07 Konica Minolta Medical & Graphic Inc 画像表示装置、画像表示方法及びプログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60222919A (ja) * 1984-04-20 1985-11-07 Fujitsu Ltd 座標入力装置
JP2001212126A (ja) * 1999-12-02 2001-08-07 Ge Medical Syst Sa ３次元画像の自動レジストレーション方法
JP2010000133A (ja) * 2008-06-18 2010-01-07 Konica Minolta Medical & Graphic Inc 画像表示装置、画像表示方法及びプログラム

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