WO2005104953A1 - 画像診断支援装置及びその方法 - Google Patents
画像診断支援装置及びその方法 Download PDFInfo
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- WO2005104953A1 WO2005104953A1 PCT/JP2005/007957 JP2005007957W WO2005104953A1 WO 2005104953 A1 WO2005104953 A1 WO 2005104953A1 JP 2005007957 W JP2005007957 W JP 2005007957W WO 2005104953 A1 WO2005104953 A1 WO 2005104953A1
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- WIPO (PCT)
- Prior art keywords
- abnormal shadow
- image
- shadow candidate
- display
- detecting
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30061—Lung
Definitions
- the present invention relates to an image diagnosis support apparatus and method for detecting and displaying abnormal candidates for medical image power by a computer.
- multi-slice CT in which the detectors are arranged in the body axis direction of the subject
- cone-beam CT which uses a detector in which the detection elements are arranged two-dimensionally
- these multi-slice CT and cone-beam CT become three-dimensional by adding the direction of the body axis of the subject and the dimension of the subject to the two-dimensional tomographic plane of the subject in the conventional single-slice CT. This means that the amount of image data required will be significantly larger than before.
- the MRI apparatus collects the three-dimensional image information from the beginning, if the speed of collecting the three-dimensional image information is increased, the number of the three-dimensional image information is increased as compared with the case without the high-speed imaging technology.
- CAD Computer AIDed Detection
- some abnormal shadow candidates detected by the CAD include false positive shadows, which are not actually abnormal, and false positive shadows must be read by an image reader who performs image diagnosis.
- the reader interprets the determined false positive shadow as the abnormal shadow sign. Perform the operation to exclude from the supplement!
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-325761
- the image information (including the abnormal shadow candidate detected by the above CAD) is not sufficiently displayed. For example, when an image is a single tomographic image, the peripheral information of the image is not displayed.
- the reason for detection and surrounding information can be used to determine, for example, whether the image is an abnormal shadow, such as a false positive kazuma. For this reason, it is necessary for the radiologist to take a long time for the determination, and especially for a relatively inexperienced radiologist, he or she must ask the instructor for the determination. Or have to do! / ,.
- An image diagnosis support apparatus includes an image data reading unit that reads image data representing an image of a subject acquired by a medical image capturing apparatus, and a plurality of pieces of abnormal shadow information from the read image.
- An image diagnosis support comprising: an abnormal shadow candidate detecting unit that detects at least one abnormal shadow candidate; and a display unit that superimposes and displays the read image and a marker indicating the detected abnormal shadow candidate.
- setting means for setting, as determination support information, information for supporting determination of an abnormal shadow candidate detected by the abnormal shadow candidate detection means, and setting the determined determination support information, the abnormal shadow candidate, and the marker.
- Control means for simultaneously displaying on the display means. This provides an image diagnosis support device capable of supporting accurate determination of the type of abnormal shadow candidate.
- the image diagnosis support method of the present invention provides a method for obtaining a subject obtained by a medical image capturing apparatus.
- Image data reading step of reading image data representing the image of the above, an abnormal shadow candidate detecting step of detecting at least one of a plurality of abnormal shadow information from the read image, an abnormal shadow candidate detecting step, and the detected abnormal shadow A step of setting information for supporting the candidate determination as the determination support information; and a display step of simultaneously displaying the set determination support information, the read image, and a marker indicating the detected abnormal shadow candidate. including.
- This provides an image diagnosis support method capable of supporting accurate determination of the type of abnormal shadow candidate.
- FIG. 1 is a schematic configuration diagram of an image diagnosis support device according to an embodiment of the present invention.
- the image diagnosis support device 10 includes a central processing unit (CPU) 12, a main memory 14, a data recording device 16, and a display memory 18 connected to the CPU 12 via a data bus 30, and a display connected to the display memory 18. 20, a pointing device 22 connected to the CPU 12 via the pointing device controller 24, a pointing device controller connected to the CPU 12 via the data bus 30, a keyboard 26, and a network adapter 28. I have.
- the CPU 12 controls the operation of each component.
- the main memory 14 stores a control program for the image diagnosis support apparatus 10.
- the data recording device 16 stores the image data of the subject and the operation program, etc.
- a device that writes and reads data to and from an external medium and a device that transmits and receives data to and from an external storage device via a network may be used.
- the display memory 18 temporarily stores image data for display.
- the display 20 displays an image based on the image data from the display memory 18.
- the pointing device 22 is a mouse, a trackball, a touch panel, or the like, and operates a soft switch on the screen of the display 20.
- the pointing device controller 24 is provided in the pointing device 22 to detect the position and displacement of an encoder, a button switch, and the like.
- the manipulated variable is transmitted to the CPU 12 via the data bus 30.
- the keyboard 26 has keys and switches for setting various parameters.
- An image reader arbitrarily inputs information to the keys and switches, and the input information is transmitted to the CPU 12 via the data bus 30. Transmitted.
- the network adapter 28 connects the image diagnosis support apparatus 10 to a network N such as a local area network, a telephone line, and the Internet, and connects to an external medical image capturing apparatus 50 and an image database 60 via the network N. And send and receive image data to and from them.
- a network N such as a local area network, a telephone line, and the Internet
- FIG. 2 is a flowchart illustrating a process of detecting and displaying an abnormal shadow candidate by the image diagnosis support apparatus 10 of FIG.
- the CPU 12 controls the image diagnosis support device 10 according to this flowchart.
- the CPU 12 causes the display 20 to display an ID input screen of the subject.
- the radiologist inputs the ID number of the subject to be subjected to the diagnostic processing on the ID input screen of the display 20.
- the radiogram interpreter inputs in advance the display mode of display Z non-display of abnormal shadow candidate detection reason information (S201).
- the CPU 12 reads out image data to be subjected to abnormal shadow candidate detection processing from the data recording device 16, the medical image photographing device 50, or the image database 60 based on the input ID number of the subject (S202).
- This image data can be obtained from various imaging sites such as the lung field, bronchus, breast, and large intestine of the subject, using any of various types of image data obtained by various modalities such as an X-ray imaging device, an X-ray CT device, and an MRI device. It may be.
- a representative example of the image data is a CT image obtained from the modality image data obtained by obtaining the lung force of the subject by the X-ray CT apparatus.
- the CPU 12 performs an abnormal shadow candidate detection process (S203) on the image data read in the previous process.
- the CPU 12 determines the target image and the detected abnormal shadow candidate based on the result of S203.
- the indicated marker is superimposed on the display 20 (S204).
- the CPU 12 controls the display on the display 20 based on the display mode of the detection reason information of the abnormal shadow candidate input in S201. That is, if the display mode is “display”, the CPU 12 displays the abnormal shadow candidate detection reason information together with the superimposed display displayed in S204, and displays the display in S204 if the display mode is “non-display”.
- the displayed superimposed display is kept displayed (S205).
- FIG. 3 is a flowchart of the abnormal shadow candidate detection process (S203).
- Abnormal shadow candidate detection processing includes solid shadow detection (S301), lung wall tight shadow detection (S302), ground glass shadow detection (S303), mediastinal tight shadow detection (S304), and blood vessel superimposed shadow detection (S305) and detection of blood vessel connection shadow (S306).
- S301 solid shadow detection
- S302 lung wall tight shadow detection
- S303 ground glass shadow detection
- S304 mediastinal tight shadow detection
- S305 blood vessel superimposed shadow detection
- S305 blood vessel superimposed shadow detection
- S306 detection of blood vessel connection shadow
- FIG. 4 is a flowchart of a module for performing solid shadow detection (S301) of FIG. 3.
- the CPU 12 performs a threshold process on the read image data to generate a binary image. create.
- the region to be recognized is separated (S401).
- the CPU 12 performs an isolation process for isolating the area separated in S401 (S402). Then, the CPU 12 performs a force determination process for satisfying the information of the solid shadow on the isolated region (S403).
- the CPU 12 records information on the area (abnormal shadow candidate) determined to satisfy the information on the solid shadow in the abnormal shadow candidate data table (see FIG. 6).
- the abnormal shadow candidate data table is stored, for example, in a part of the main memory 14 (S404).
- the CPU 12 uses the solid shadow detection module to set the coordinates (XI, Y1) of the slice 3 at the slice position of 30 mm as shown in FIG. 5 (a) as shown in FIG. 5 (b). At the position, an abnormal shadow candidate having a size to be indicated by a marker having a radius R1 is detected as shown in FIG. 5 (c). When detecting an abnormal shadow candidate having a size to be indicated by the marker having the radius R1, the CPU 12, as shown in FIG. Information on the module that detected the abnormal shadow candidate is recorded in the abnormal shadow candidate data table.
- the information recorded in the abnormal shadow candidate data table is
- the detection module may include feature amounts (for example, circularity and major / short axis ratio) used when the detection module detects an abnormal shadow candidate, and information on the density and shape of the detected abnormal shadow candidate.
- information about the detection module may be a comment that indicates the name of the detection module or the characteristics of the detection module. Any information may be used.
- the CPU 12 also performs processing similar to the solid shadow detection module described with reference to FIGS. 4 to 6 in each of the detection modules that perform shadow detection other than solid shadows (S302 to S305).
- the information on the abnormal shadow candidate detected by the module is recorded in the abnormal shadow candidate data table.
- Parameters such as threshold values in each detection module of the image binarization (S401) and the region cutting / isolation processing (S402) are recognized as abnormal shadows detected by each detection module (for example, lung wall contact shadows in S302). It is set so that the area to be performed is clearly detected.
- the CPU 12 also determines and detects a region that satisfies the abnormal shadow information of each detection module in the determination of an abnormal shadow candidate (S403).
- the abnormal shadow candidate is displayed together with the detection reason information, so that the radiologist uses the detection reason information to determine whether or not the abnormal shadow candidate is a false positive shadow. Therefore, the determination can be supported.
- the CPU 12 determines the target image including the abnormal shadow candidate and the markers Ml and M2 indicating the abnormal shadow candidate as shown in FIG. It is superimposed on the display 20.
- the marker indicating the abnormal shadow candidate is not limited to the circle (including the ellipse) in the example of FIG. 7, but may be an arrow indicating the abnormal shadow candidate that can be in any other shape such as a triangle or a rectangle. Also, the reader can select a desired mark shape according to the purpose of diagnosis.
- the interpreter selects Ml on the display 20 via the pointing device 22 or the keyboard 26.
- the CPU 12 displays the abnormal shadow candidate detection reason information R1 indicated by the selected marker Ml based on the abnormal shadow candidate data table.
- the CPU 12 determines that the abnormal shadow candidate indicated by the selected marker Ml is an abnormal shadow candidate detected by the lung wall tight shadow detecting module, A marker is attached to the relevant area for the reason of "suspicion of" and the fact that it is superimposed on the image is displayed.
- the display method of the detection reason information R1 may be, for example, displayed in an area different from the image as shown in FIG. 7 (c), or displayed corresponding to a plurality of markers as shown in FIG. 7 (d). You may. In other words, any display form may be used as long as the detection reason information of the abnormal marker candidate indicated by the selected marker is displayed in association with the marker.
- the detection reason information Rl and R2 may be displayed for the marker and the abnormal shadow candidate regardless of the selection of the marker.
- the detection reason information is not limited to the example of FIG. 7 and may be any information indicating the reason why the abnormal shadow candidate is determined to satisfy the abnormal shadow information and is detected.
- the CPU 12 sets, for example, an MPR (Multi-Elanar) in a range in which the marker radius is the center of the center of the abnormal shadow candidate area as shown in Fig. 8 (a).
- MPR Multi-Elanar
- Reconstruction images may be created and displayed.
- the MPR image is not limited to the coronal cross-sectional image shown in FIG. 8A, but may be a sagittal cross-sectional image.
- the CPU 12 may create and display an MPR image rotated at an arbitrary angle about an axis passing through the center of gravity of the abnormal shadow candidate as shown in FIG. 8 (b)!
- FIGS. 8 (a) and 8 (b) in order to explain the MPR image in detail, the markers and abnormalities shown in FIG. 7 (a) to FIG. Normally, a superimposed image indicating a shadow candidate is displayed on one screen.
- the superimposed images of FIGS. 7 (a) to 7 (e) and the MPR image of FIG. 8 may be respectively displayed on the plurality of screens.
- the CPU 12 creates and displays, for example, a three-dimensional image of an abnormal shadow candidate indicated as a marker in a range having a center at the center of gravity of the abnormal shadow candidate and a radius equal to the marker radius. You may.
- a three-dimensional image is a rendering method in which a plurality of tomographic images are stacked in the body axis direction, and a configuration method disclosed in Japanese Patent Application Laid-Open No. 2000-217810, which is called a cone beam three-dimensional image configuration method in cone beam CT. This is performed by a known method.
- FIG. 9 shows only the three-dimensional image in order to explain the three-dimensional image in detail. Normally, a superimposed image showing a marker and an abnormal shadow candidate as shown in FIGS. 7A to 7E is usually displayed on one screen.
- the superimposed images of FIGS. 7A to 7E and the three-dimensional image of FIG. 9 may be respectively displayed on the plurality of screens.
- the image including the abnormal shadow candidate and the peripheral information of the image are displayed as an MPR image or a three-dimensional image.
- the ability to use the peripheral information to determine whether or not to perform three-dimensional grasping can support the determination.
- the three-dimensional grasp refers to grasping, for example, how a lesion such as cancer has spread in the body axis direction of the subject.
- the image diagnosis support apparatus and the method thereof according to the present invention are for detecting and displaying a candidate for medical image abnormality and abnormal shadow by a computer, and accurately determining the type of the abnormal shadow candidate based on the determination support information. To help you do that.
- FIG. 1 is a schematic configuration diagram showing an embodiment of an image diagnosis support apparatus according to the present invention.
- FIG. 2 is a flowchart illustrating a process of detecting and displaying an abnormal shadow candidate.
- FIG. 3 is a flowchart illustrating a process of detecting an abnormal shadow candidate.
- FIG. 4 is a flowchart of a module for detecting a solid shadow.
- FIG. 5 is a schematic diagram for explaining information on abnormal shadow candidates.
- FIG. 6 is a diagram showing an example of an abnormal shadow candidate data table.
- FIG. 7 is a diagram showing a display example of abnormal shadow candidate detection results and detection reason information.
- FIG. 8 is a schematic diagram for explaining an MPR image of an abnormal shadow candidate.
- FIG. 9 is a schematic diagram for explaining a three-dimensional image of an abnormal shadow candidate.
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- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006512793A JP5001002B2 (ja) | 2004-04-28 | 2005-04-27 | 画像診断支援装置及びその方法 |
US11/578,850 US7747053B2 (en) | 2004-04-28 | 2005-04-27 | Image diagnosis supporting system and method |
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JP2004132914 | 2004-04-28 | ||
JP2004-132914 | 2004-04-28 |
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WO2005104953A1 true WO2005104953A1 (ja) | 2005-11-10 |
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PCT/JP2005/007957 WO2005104953A1 (ja) | 2004-04-28 | 2005-04-27 | 画像診断支援装置及びその方法 |
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US (1) | US7747053B2 (ja) |
JP (1) | JP5001002B2 (ja) |
WO (1) | WO2005104953A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009268735A (ja) * | 2008-05-08 | 2009-11-19 | Toshiba Corp | 医用画像処理装置 |
US8880455B2 (en) | 2009-02-27 | 2014-11-04 | Canon Kabushiki Kaisha | Medical decision making support apparatus and control method for the same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8081811B2 (en) * | 2007-04-12 | 2011-12-20 | Fujifilm Corporation | Method, apparatus, and program for judging image recognition results, and computer readable medium having the program stored therein |
WO2010047324A1 (ja) * | 2008-10-20 | 2010-04-29 | 株式会社 日立メディコ | 医用画像処理装置、及び医用画像処理方法 |
JP5800595B2 (ja) | 2010-08-27 | 2015-10-28 | キヤノン株式会社 | 医療診断支援装置、医療診断支援システム、医療診断支援の制御方法、及びプログラム |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH07323024A (ja) * | 1994-06-01 | 1995-12-12 | Konica Corp | 画像診断支援装置 |
JP2001187044A (ja) * | 2000-11-20 | 2001-07-10 | Toshiba Corp | 画像収集装置 |
JP2002325761A (ja) * | 2000-06-30 | 2002-11-12 | Hitachi Medical Corp | 画像診断支援装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0616290B1 (en) * | 1993-03-01 | 2003-02-05 | Kabushiki Kaisha Toshiba | Medical information processing system for supporting diagnosis. |
JP2001299733A (ja) * | 2000-04-27 | 2001-10-30 | Konica Corp | Pci放射線画像処理装置、pci放射線画像検出処理装置、pci放射線画像出力装置及びpci画像診断支援装置 |
JP4163370B2 (ja) * | 2000-06-08 | 2008-10-08 | 富士フイルム株式会社 | 異常陰影候補検出システム |
US7245754B2 (en) * | 2000-06-30 | 2007-07-17 | Hitachi Medical Corporation | image diagnosis supporting device |
US7187789B2 (en) * | 2000-08-31 | 2007-03-06 | Fuji Photo Film Co., Ltd. | Prospective abnormal shadow detecting system, and method of and apparatus for judging whether prospective abnormal shadow is malignant or benignant |
-
2005
- 2005-04-27 WO PCT/JP2005/007957 patent/WO2005104953A1/ja active Application Filing
- 2005-04-27 US US11/578,850 patent/US7747053B2/en not_active Expired - Fee Related
- 2005-04-27 JP JP2006512793A patent/JP5001002B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07323024A (ja) * | 1994-06-01 | 1995-12-12 | Konica Corp | 画像診断支援装置 |
JP2002325761A (ja) * | 2000-06-30 | 2002-11-12 | Hitachi Medical Corp | 画像診断支援装置 |
JP2001187044A (ja) * | 2000-11-20 | 2001-07-10 | Toshiba Corp | 画像収集装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009268735A (ja) * | 2008-05-08 | 2009-11-19 | Toshiba Corp | 医用画像処理装置 |
US8880455B2 (en) | 2009-02-27 | 2014-11-04 | Canon Kabushiki Kaisha | Medical decision making support apparatus and control method for the same |
US9436915B2 (en) | 2009-02-27 | 2016-09-06 | Canon Kabushiki Kaisha | Medical decision making support apparatus and control method for the same |
Also Published As
Publication number | Publication date |
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US7747053B2 (en) | 2010-06-29 |
JP5001002B2 (ja) | 2012-08-15 |
JPWO2005104953A1 (ja) | 2008-03-13 |
US20070172103A1 (en) | 2007-07-26 |
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