JP5432483B2 - 異常陰影検出装置およびプログラム - Google Patents
異常陰影検出装置およびプログラム Download PDFInfo
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- JP5432483B2 JP5432483B2 JP2008199212A JP2008199212A JP5432483B2 JP 5432483 B2 JP5432483 B2 JP 5432483B2 JP 2008199212 A JP2008199212 A JP 2008199212A JP 2008199212 A JP2008199212 A JP 2008199212A JP 5432483 B2 JP5432483 B2 JP 5432483B2
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- 230000002159 abnormal effect Effects 0.000 title claims description 120
- 238000001514 detection method Methods 0.000 title claims description 40
- 238000000034 method Methods 0.000 claims description 46
- 238000012217 deletion Methods 0.000 claims description 20
- 230000037430 deletion Effects 0.000 claims description 20
- 238000010801 machine learning Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 description 20
- 210000004204 blood vessel Anatomy 0.000 description 18
- 208000004434 Calcinosis Diseases 0.000 description 12
- 230000002308 calcification Effects 0.000 description 12
- 238000000151 deposition Methods 0.000 description 11
- 230000002792 vascular Effects 0.000 description 11
- 230000008021 deposition Effects 0.000 description 10
- 210000000481 breast Anatomy 0.000 description 8
- 238000012706 support-vector machine Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 206010006187 Breast cancer Diseases 0.000 description 2
- 208000026310 Breast neoplasm Diseases 0.000 description 2
- 238000004195 computer-aided diagnosis Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003211 malignant effect Effects 0.000 description 2
- 210000005075 mammary gland Anatomy 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000009607 mammography Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 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
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/34—Smoothing or thinning of the pattern; Morphological operations; Skeletonisation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
- G06V10/768—Arrangements for image or video recognition or understanding using pattern recognition or machine learning using context analysis, e.g. recognition aided by known co-occurring patterns
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
- G06V10/77—Processing image or video features in feature spaces; using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]; Blind source separation
- G06V10/7715—Feature extraction, e.g. by transforming the feature space, e.g. multi-dimensional scaling [MDS]; Mappings, e.g. subspace methods
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- 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
- G06T2207/10—Image acquisition modality
- G06T2207/10116—X-ray image
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- 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
- G06T2207/30068—Mammography; Breast
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V2201/00—Indexing scheme relating to image or video recognition or understanding
- G06V2201/03—Recognition of patterns in medical or anatomical images
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- General Physics & Mathematics (AREA)
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- Medical Informatics (AREA)
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- Software Systems (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Apparatus For Radiation Diagnosis (AREA)
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Description
前記異常陰影候補から偽陽性候補を削除する削除処理を行う偽陽性候補削除手段と、
前記削除処理により残った残余異常陰影候補の周囲所定範囲領域に含まれる、前記異常陰影候補の数に対する前記偽陽性候補の数の割合を近接特徴量として算出する近接特徴量算出手段と、
前記近接特徴量に基づいて前記残余異常陰影候補が前記偽陽性候補であるか否かを判定する判定手段とを備えたことを特徴とするものである。
前記異常陰影候補から偽陽性候補を削除する削除処理を行い、
前記削除処理により残った残余異常陰影候補の周囲所定範囲領域に含まれる、前記異常陰影候補の数に対する前記偽陽性候補の数の割合を近接特徴量として算出し、
前記近接特徴量に基づいて前記残余異常陰影候補が前記偽陽性候補であるか否かを判定することを特徴とするものである。
12 候補検出部
14 偽陽性候補削除部
16 近接特徴量算出部
18 判定部
Claims (7)
- 医用画像から異常陰影候補を検出する異常陰影候補検出手段と、
前記異常陰影候補から偽陽性候補を削除する削除処理を行う偽陽性候補削除手段と、
前記削除処理により残った残余異常陰影候補の周囲の所定範囲領域に含まれる、前記削除した偽陽性候補および前記残余異常陰影候補を含む前記異常陰影候補の数に対する前記削除された偽陽性候補の数の割合を近接特徴量として算出する近接特徴量算出手段と、
前記近接特徴量に基づいて前記残余異常陰影候補が前記偽陽性候補であるか否かを判定する判定手段とを備えたことを特徴とする異常陰影検出装置。 - 前記近接特徴量算出手段は、前記残余異常陰影候補毎に前記所定範囲領域に含まれる前記削除された偽陽性候補および前記残余異常陰影候補を含む前記異常陰影候補の数に対する前記削除した偽陽性候補の数の割合を、前記近接特徴量として算出する手段であることを特徴とする請求項1記載の異常陰影検出装置。
- 前記近接特徴量算出手段は、前記残余異常陰影候補毎の前記所定範囲領域が互いに重なる場合には、該互いに重なる所定範囲領域を結合し、結合した所定範囲領域に含まれる前記削除された偽陽性候補および前記残余異常陰影候補を含む前記異常陰影候補の数に対する前記削除した偽陽性候補の数の割合を、前記近接特徴量として算出する手段であることを特徴とする請求項1記載の異常陰影検出装置。
- 前記判定手段は、マシンラーニングの手法により学習された、前記近接特徴量を含む前記異常陰影候補の特徴量を入力とし、前記残余異常陰影候補が前記偽陽性候補であるか否かの判定結果を出力する判別器からなることを特徴とする請求項1から3のいずれか1項記載の異常陰影検出装置。
- 前記判定手段は、前記近接特徴量が所定の閾値以上の場合に前記残余異常陰影候補を前記偽陽性候補と判定する手段であることを特徴とする請求項1から3のいずれか1項記載の異常陰影検出装置。
- 前記異常陰影候補検出手段は、モフォロジーフィルタおよびラプラシアンフィルタの双方を用いたフィルタリング処理により前記異常陰影候補を検出する手段であることを特徴とする請求項1から5のいずれか1項記載の異常陰影検出装置。
- 医用画像から異常陰影候補を検出する手順と、
前記異常陰影候補から偽陽性候補を削除する削除処理を行う手順と、
前記削除処理により残った残余異常陰影候補の周囲の所定範囲領域に含まれる、前記削除した偽陽性候補および前記残余異常陰影候補を含む前記異常陰影候補の数に対する前記削除された偽陽性候補の数の割合を近接特徴量として算出する手順と、
前記近接特徴量に基づいて前記残余異常陰影候補が前記偽陽性候補であるか否かを判定する手順とを有することを特徴とする異常陰影検出方法をコンピュータに実行させるためのプログラム。
Applications Claiming Priority (2)
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US11/882,431 US20090034809A1 (en) | 2007-08-01 | 2007-08-01 | Abnormal tissue pattern detection apparatus, method and program |
US11/882,431 | 2007-08-01 |
Publications (2)
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JP2009034516A JP2009034516A (ja) | 2009-02-19 |
JP5432483B2 true JP5432483B2 (ja) | 2014-03-05 |
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JP (1) | JP5432483B2 (ja) |
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US9536054B1 (en) | 2016-01-07 | 2017-01-03 | ClearView Diagnostics Inc. | Method and means of CAD system personalization to provide a confidence level indicator for CAD system recommendations |
US10339650B2 (en) | 2016-01-07 | 2019-07-02 | Koios Medical, Inc. | Method and means of CAD system personalization to reduce intraoperator and interoperator variation |
US10346982B2 (en) | 2016-08-22 | 2019-07-09 | Koios Medical, Inc. | Method and system of computer-aided detection using multiple images from different views of a region of interest to improve detection accuracy |
CN112016569A (zh) * | 2020-07-24 | 2020-12-01 | 驭势科技(南京)有限公司 | 基于注意力机制的目标检测方法、网络、设备和存储介质 |
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DE69629732T2 (de) * | 1995-01-23 | 2004-07-15 | Fuji Photo Film Co., Ltd., Minami-Ashigara | Vorrichtung zur rechnerunterstützten Diagnose |
US5790690A (en) * | 1995-04-25 | 1998-08-04 | Arch Development Corporation | Computer-aided method for automated image feature analysis and diagnosis of medical images |
JPH1156828A (ja) * | 1997-08-27 | 1999-03-02 | Fuji Photo Film Co Ltd | 異常陰影候補検出方法および装置 |
US6088473A (en) * | 1998-02-23 | 2000-07-11 | Arch Development Corporation | Method and computer readable medium for automated analysis of chest radiograph images using histograms of edge gradients for false positive reduction in lung nodule detection |
US7136518B2 (en) * | 2003-04-18 | 2006-11-14 | Medispectra, Inc. | Methods and apparatus for displaying diagnostic data |
US20040208390A1 (en) * | 2003-04-18 | 2004-10-21 | Medispectra, Inc. | Methods and apparatus for processing image data for use in tissue characterization |
US20060013454A1 (en) * | 2003-04-18 | 2006-01-19 | Medispectra, Inc. | Systems for identifying, displaying, marking, and treating suspect regions of tissue |
JP2005040490A (ja) * | 2003-07-25 | 2005-02-17 | Fuji Photo Film Co Ltd | 異常陰影検出方法および装置並びにプログラム |
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US20090034809A1 (en) | 2009-02-05 |
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