JP2019181204A5

JP2019181204A5 -

Info

Publication number: JP2019181204A5
Application number: JP2019075004A
Authority: JP
Filing date: 2019-04-10
Publication date: 2020-03-26
Anticipated expiration: 2039-04-10

Description

上記目的を達成するため、本発明に係るマンモグラフィ読影装置は、
モニタと、
Ｘ線マンモグラフィ装置により撮影された人体の乳房の２次元のＸ線画像を前記モニタの画面に表示する画像表示手段と、
前記画像表示手段により前記Ｘ線画像が表示された前記モニタの前記画面に、特定の形状及びサイズを有し且つ想定した病変部を模擬的に示す模擬領域を当該画面上で移動可能な状態で設定し表示する模擬領域設定表示手段と、
前記画面上で前記模擬領域を形成する複数の画素を特定する画素特定手段と、
前記画素特定手段により特定された前記複数の画素の少なくとも一部の複数の原輝度と、当該少なくとも一部の複数の画素に、前記模擬領域の広がりを特徴付ける処理を施して得た輝度とを合成する輝度合成手段と、
前記輝度合成手段により合成された輝度を有する前記模擬領域を、前記Ｘ線画像に重畳して表示可能なように前記モニタの前記画面に表示する重畳表示手段と、
を備えたことを特徴とする。 In order to achieve the above object, a mammography image reading apparatus according to the present invention is provided.
Monitor and
Image display means for displaying a two-dimensional X-ray image of a human breast taken by an X-ray mammography apparatus on a screen of the monitor;
On the screen of the monitor on which the X-ray image is displayed by the image display means, a simulation area having a specific shape and size and simulating an assumed lesion is movable on the screen. a simulated area setting display device for setting display,
Pixel specifying means for specifying a plurality of pixels forming the simulation area on the screen,
A plurality of original luminances of at least a part of the plurality of pixels specified by the pixel specifying means are combined with a luminance obtained by performing a process for characterizing the spread of the simulation region on at least a part of the plurality of pixels. Brightness synthesizing means,
The simulated area, and table Shimesuru superimposed display means to the screen of the monitor so as to be displayed superimposed on the X-ray image with a synthesized luminance by the luminance synthesizing unit,
It is characterized by having.

このように、病変を模した模擬領域が乳房のＸ線画像に、その模擬領域の広がりを特徴付けた輝度で重畳表示可能になる。このため、ユーザ（読影医など）は、そのように重畳表示された模擬領域を関心ある部位まで移動させることで、その部位において、模擬領域の広がり、即ち、腫瘤等の病変の見逃したくないサイズ（広がり）と乳腺組織の関心部位の広がりとを比較して観察してみることができる。具体的には、病変が乳腺組織の一部の関心部位に隠れてしまっていないか、物差しを当てたのと同等の状態を画像上で容易に且つ迅速に得られる。このため、マンモグラフィ画像の読影をより精度良くかつ迅速に行うことができ、読影スループット向上に貢献でき、また読影者の読影作業の労力軽減にも寄与可能になる。
In this manner, a simulation region that imitates a lesion can be superimposed and displayed on an X-ray image of the breast with a luminance that characterizes the spread of the simulation region. For this reason, the user (radiographer or the like) moves the simulated area thus superimposed and displayed to a site of interest, thereby expanding the simulated area, that is, the size of the simulated area that the user does not want to miss a lesion such as a tumor. (Spread) can be compared with the spread of the site of interest in the mammary gland tissue. Specifically, whether the lesion is not got hidden part of the region of interest of the breast tissue, it is easily and quickly obtained was irradiated with ruler Noto equivalent state in the image. For this reason, the interpretation of the mammography image can be performed more accurately and promptly, which can contribute to an improvement in the interpretation throughput, and can also contribute to a reduction in the work of the interpreter for the interpretation work.

好適な一例として、前記模擬領域は、オペレータが前記Ｘ線画像上で病変の見過しを防止するように予め設定された所望サイズに設定されている。
As a preferred example, the simulation area is set to a desired size that is set in advance so that an operator does not overlook a lesion on the X-ray image.

また、別の好適な一例として、前記模擬領域設定手段は、前記モニタの画面上に表示する前記模擬領域のサイズ及び形状のうちの少なくとも一方を変更可能な領域変更手段を備える。
As another preferred example, the simulation area setting means includes an area changing means capable of changing at least one of a size and a shape of the simulation area displayed on the screen of the monitor.

また、本発明に係るマンモグラフィ読影方法は、Ｘ線マンモグラフィ装置により撮影された人体の乳房の２次元のＸ線画像をモニタの画面に表示し、前記Ｘ線画像が表示された前記モニタの前記画面に、特定の形状を有し且つ想定した病変部の大きさ（及び広がり）を模擬的に示す模擬領域を、当該Ｘ線画像を探索するために当該画面上で移動可能なように設定して表示し、前記模擬領域を形成する複数の画素を特定し、前記特定された前記複数の画素の少なくとも一部の複数の原輝度と、当該少なくとも一部の複数の画素に、前記模擬領域の広がりを特徴付ける処理を施して得た輝度とを合成し、前記合成された輝度を有する前記模擬領域を、前記Ｘ線画像に重畳して表示可能なように前記モニタの前記画面に表示する、
ことを特徴とする。
Also, the mammography interpretation method according to the present invention displays a two-dimensional X-ray image of a breast of a human body taken by an X-ray mammography apparatus on a screen of a monitor, and the screen of the monitor on which the X-ray image is displayed in the simulated area showing simulated the size of and assumed lesion has a specific shape (and spread), the set Mr. so as to be movable on the screen in order to explore the X-ray image Display , specify a plurality of pixels forming the simulated area, at least some of the plurality of original luminance of the specified plurality of pixels, and at least some of the plurality of pixels, the simulated area of the synthesizing the luminance obtained by applying the process of characterizing the spread, the simulated area, displayed on the screen of the monitor so as to be displayed superimposed on the X-ray image with the synthesized intensity,
It is characterized by the following.

この読影方法によっても、上述した読影装置が提供できる作用効果と同等の作用効果を発揮することができる。
なお、上述したマンモグラフィ読影装置及びマンモグラフィ読影方法に係る特徴を機能的になす構成は、マンモグラフィ読影用のプログラムを予め記録可能な記録媒体、及び、そのプログラムとしても同様に提供できる。
According to this image reading method, the same operation and effect as those provided by the above image reading apparatus can be achieved.
Note that the above-described configuration that functionally relates to the mammography image reading apparatus and the mammography image reading method can be similarly provided as a recording medium on which a mammography image reading program can be recorded in advance, and as the program.

Claims

Monitor and
Image display means for displaying a two-dimensional X-ray image of a human breast taken by an X-ray mammography apparatus on a screen of the monitor;
On the screen of the monitor on which the X-ray image is displayed by the image display means, a simulation area having a specific shape and size and simulating the assumed size of a lesion can be moved on the screen. Simulation area setting display means for setting and displaying in a state of
Pixel specifying means for specifying a plurality of pixels forming the simulation area on the screen,
A plurality of original luminances of at least a part of the plurality of pixels specified by the pixel specifying means are combined with a luminance obtained by performing a process for characterizing the spread of the simulation region on at least a part of the plurality of pixels. Brightness synthesizing means,
The simulated area, and table Shimesuru superimposed display means to the screen of the monitor so as to be displayed superimposed on the X-ray image with a synthesized luminance by the luminance synthesizing unit,
A mammography image reading apparatus comprising:

The brightness synthesis means,
The original luminance of the at least some of the plurality of pixels and the luminance obtained by processing the original luminance of the at least some of the plurality of pixels by a predetermined process are synthesized for each pixel, so that the luminance is synthesized. Have been
The mammography image reading apparatus according to claim 1, wherein:

The predetermined process includes a plurality of types of processes prepared in advance,
The luminance synthesis unit is configured to be operable in a plurality of luminance synthesis modes corresponding to each of the plurality of types of processing,
The image reading device,
Selection means for allowing the user to arbitrarily select the plurality of luminance synthesis modes;
When an arbitrary luminance synthesis mode is selected by the selection means, the user can move the simulation area according to the selected luminance synthesis mode to an arbitrary position on the screen, Prepared,
The superimposing display means is configured to update and display the simulation area moved by the area moving means on the monitor together with the X-ray image.
The mammography image reading apparatus according to claim 2, wherein:

The plurality of types of processing methods,
A first luminance synthesis pattern that replaces the original luminance of only a plurality of pixels on the periphery of the simulation area with the luminance indicating the periphery of the simulation area;
A second luminance synthesis pattern in which the original luminance of each of the pixels inside the simulation area is adopted as the alpha value and the original luminance and a given specific value are alpha-blended;
A third luminance synthesis pattern that switches processing for the synthesis based on the result of discrimination of the original pixel of each pixel inside the simulation area based on a predetermined threshold value;
Having at least
The mammography image reading apparatus according to claim 3, wherein:

The simulation area is set to an area having a desired shape and size set by the operator to prevent a lesion from being overlooked on the X-ray image.
The mammography image reading apparatus according to any one of claims 1 to 4, wherein:

The simulation region setting display unit includes an initial display setting unit that initially displays the simulation region on a screen of the monitor.
The mammography image reading apparatus according to any one of claims 1 to 5, wherein:

The simulated area setting display means includes an area changing means for performing an instruction capable of changing at least one of a size and a shape of the simulated area displayed on the screen of the monitor.
7. The mammography image reading apparatus according to claim 5, wherein:

The image display means is configured to display two X- ray images acquired by imaging the right and left breasts by the X-ray mammography apparatus on the screen of the monitor symmetrically or side by side in the same direction. And
The simulated area setting display means sets the simulated area to an initial position having the same positional relationship in the left-right symmetric or the same direction in each of the two X- ray images displayed on the screen of the monitor. Configured to set
The superimposition display means displays, in the two X- ray images, the two simulated areas luminance-synthesized by the luminance synthesis means for each of the images, in the same positional relationship in the left-right symmetry or the same direction. It is configured to display in conjunction with holding,
The mammography image reading apparatus according to any one of claims 1 to 7, wherein:

Displaying, on a monitor screen, a two-dimensional X-ray image of a human breast taken by the X-ray mammography apparatus;
On the screen of the monitor in which the X-ray image is displayed, the simulated area indicating the size of and assumed lesion has a specific shape simulated, the screen for searching the X-ray image in setting to display so as to be movable,
Identify a plurality of pixels forming the simulation area,
A plurality of original luminances of at least a part of the specified plurality of pixels and a luminance obtained by performing a process for characterizing the spread of the simulation region on the at least some of the plurality of pixels,
The simulated area having the synthetic luminance is displayed on the screen of the monitor so as to be displayed superimposed on the X-ray image,
A mammography interpretation method, characterized in that:

The simulation area is set to an area having a desired shape and size set by the operator to prevent a lesion from being overlooked on the X-ray image.
The mammography interpretation method according to claim 9, wherein:

A mammography reading apparatus having a computer capable of displaying a two-dimensional X-ray image of a human breast taken by an X-ray mammography apparatus on a screen of a monitor and providing input information from an input device to the screen display. Applied to, a recording medium capable of pre-recording a program for mammography interpretation readable and executable by the computer,
The computer reads and executes the program recorded on the recording medium, so that the computer:
Image display means for displaying a two-dimensional X-ray image of the breast of a human body taken by the X-ray mammography apparatus on a screen of the monitor;
On the screen of the monitor in which the X-ray image is displayed by the image display means sets a simulated area movable in the screen in order to search for and the X-ray image has a specific and size shape a simulated area setting display means for displaying,
Pixel specifying means for specifying a plurality of pixels forming the simulation area on the screen,
A plurality of original luminances of at least a part of the plurality of pixels specified by the pixel specifying unit are combined with a luminance obtained by performing a process for characterizing the existence of the simulation region on the at least some of the plurality of pixels. Brightness synthesizing means,
Superimposing display means for displaying on the screen of the monitor , the simulation area having the luminance synthesized by the luminance synthesizing means so as to be superimposable and displayable on the X-ray image ;
A recording medium characterized in that the recording medium is functionally provided.

A two-dimensional X-ray image of a human breast taken by an X-ray mammography apparatus is displayed on a monitor screen, and a computer capable of giving input information to the screen display is read and executable by a computer. In the mammography reading program recorded in
The computer reads the program from the recording medium and executes the program, whereby the computer:
Image display means for displaying, on a monitor screen, a two-dimensional X-ray image of a human breast taken by the X-ray mammography apparatus;
On the screen of the monitor in which the X-ray image is displayed by the image display means sets a simulated area movable in the screen in order to search for and the X-ray image has a specific shape and size a simulated area setting display means for displaying,
Pixel specifying means for specifying a plurality of pixels forming the simulation area on the screen,
A plurality of original luminances of at least a part of the plurality of pixels specified by the pixel specifying unit are combined with a luminance obtained by performing a process for characterizing the existence of the simulation region on the at least some of the plurality of pixels. Brightness synthesizing means,
The simulated area, superimposing display means that displays on the screen of the monitor so as to be displayed superimposed on the X-ray image with a synthesized luminance by the luminance synthesizing unit,
A program characterized in that the function is provided.