JP2012005891A - X線ct装置及び画像処理装置 - Google Patents
X線ct装置及び画像処理装置 Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/02007—Evaluating blood vessel condition, e.g. elasticity, compliance
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/48—Diagnostic techniques
- A61B6/481—Diagnostic techniques involving the use of contrast agents
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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
- A61B6/504—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 blood vessels, e.g. by angiography
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- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
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Abstract
【解決手段】X線CT装置は、被検体に関する投影データを収集し、収集した投影データに基づいて被検体の内部の画像を再構成するX線CT装置において、画像から、複数の閾値に基づいて、順番に内包するサイズの異なる複数の領域候補を抽出し、抽出された複数の領域候補各々の重心を計算し、重心間の距離に基づいて抽出された複数の領域候補から特定の領域を選択するユニット27を具備する。
【選択図】 図5
Description
以下、本発明の第1実施例について説明する。
以下、本発明の第2実施例について説明する。尚、第1実施例と同じ部分については説明を省略する。
Claims (4)
- 被検体に関する投影データを収集し、前記収集した投影データに基づいて前記被検体の内部の画像を再構成するX線CT装置において、
前記画像から、複数の閾値に基づいて、順番に内包するサイズの異なる複数の領域候補を抽出するユニットと、
前記抽出された複数の領域候補各々の重心を計算するユニットと、
前記重心間の距離に基づいて、前記抽出された複数の領域候補から特定の領域を選択するユニットとを具備するX線CT装置。 - 前記複数の閾値は、前記画像に関するCT値ごとの画素出現の頻度分布に基づいて決定される請求項1記載のX線CT装置。
- 前記選択ユニットは、前記重心の変位量が所定量未満に収まる最大の領域を前記特定の領域として選択する請求項1記載のX線CT装置。
- X線画像から、複数の閾値に基づいて、順番に内包するサイズの異なる複数の領域候補を抽出するユニットと、
前記抽出された複数の領域候補各々の重心を計算するユニットと、
前記重心間の距離に基づいて、前記抽出された複数の領域候補から特定の領域を選択するユニットとを具備する画像処理装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011223799A JP5159937B2 (ja) | 2004-11-26 | 2011-10-11 | X線ct装置及び画像処理装置 |
Applications Claiming Priority (5)
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---|---|---|---|
JP2004342273 | 2004-11-26 | ||
JP2004342272 | 2004-11-26 | ||
JP2004342273 | 2004-11-26 | ||
JP2004342272 | 2004-11-26 | ||
JP2011223799A JP5159937B2 (ja) | 2004-11-26 | 2011-10-11 | X線ct装置及び画像処理装置 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006547829A Division JP4874810B2 (ja) | 2004-11-26 | 2005-11-24 | X線ct装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012005891A true JP2012005891A (ja) | 2012-01-12 |
JP5159937B2 JP5159937B2 (ja) | 2013-03-13 |
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006547829A Expired - Fee Related JP4874810B2 (ja) | 2004-11-26 | 2005-11-24 | X線ct装置 |
JP2011223799A Expired - Fee Related JP5159937B2 (ja) | 2004-11-26 | 2011-10-11 | X線ct装置及び画像処理装置 |
Family Applications Before (1)
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JP2006547829A Expired - Fee Related JP4874810B2 (ja) | 2004-11-26 | 2005-11-24 | X線ct装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7953263B2 (ja) |
EP (2) | EP1825810A4 (ja) |
JP (2) | JP4874810B2 (ja) |
WO (1) | WO2006057304A1 (ja) |
Cited By (1)
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---|---|---|---|---|
JP7423338B2 (ja) | 2019-08-12 | 2024-01-29 | キヤノンメディカルシステムズ株式会社 | 画像処理装置及び画像処理方法 |
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JP5426370B2 (ja) * | 2007-05-09 | 2014-02-26 | 株式会社日立メディコ | 磁気共鳴イメージング装置及び画像分類方法 |
US8090171B2 (en) * | 2007-10-19 | 2012-01-03 | Siemens Medical Solutions Usa, Inc. | Image data subtraction system suitable for use in angiography |
US9171344B2 (en) | 2007-10-30 | 2015-10-27 | Onemednet Corporation | Methods, systems, and devices for managing medical images and records |
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JP5208484B2 (ja) * | 2007-11-14 | 2013-06-12 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | X線ct装置 |
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JP5337416B2 (ja) * | 2008-07-02 | 2013-11-06 | 株式会社東芝 | 画像処理装置及び画像診断装置 |
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JP2012200285A (ja) * | 2011-03-23 | 2012-10-22 | Toshiba Corp | 画像処理装置、x線ct装置、及び画像処理方法 |
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WO2014034618A1 (ja) | 2012-08-30 | 2014-03-06 | 株式会社東芝 | 医用画像処理装置及びx線コンピュータ断層撮影装置 |
US9741127B1 (en) | 2013-05-10 | 2017-08-22 | Shimadzu Corporation | Image processing device |
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CN104580879B (zh) | 2013-10-09 | 2018-01-12 | 佳能株式会社 | 图像处理设备、图像拾取设备以及图像处理方法 |
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CN105022719B (zh) * | 2014-04-23 | 2019-06-28 | Ge医疗系统环球技术有限公司 | 医学造影系统及方法 |
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2005
- 2005-11-24 EP EP05809487A patent/EP1825810A4/en not_active Withdrawn
- 2005-11-24 EP EP10193664.9A patent/EP2284794B1/en not_active Expired - Fee Related
- 2005-11-24 JP JP2006547829A patent/JP4874810B2/ja not_active Expired - Fee Related
- 2005-11-24 WO PCT/JP2005/021588 patent/WO2006057304A1/ja active Application Filing
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- 2007-05-25 US US11/753,783 patent/US7953263B2/en not_active Expired - Fee Related
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JP7423338B2 (ja) | 2019-08-12 | 2024-01-29 | キヤノンメディカルシステムズ株式会社 | 画像処理装置及び画像処理方法 |
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Publication number | Publication date |
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EP2284794A3 (en) | 2014-08-13 |
EP1825810A1 (en) | 2007-08-29 |
WO2006057304A1 (ja) | 2006-06-01 |
JP5159937B2 (ja) | 2013-03-13 |
US7953263B2 (en) | 2011-05-31 |
EP2284794B1 (en) | 2017-01-18 |
EP2284794A2 (en) | 2011-02-16 |
EP1825810A4 (en) | 2010-07-14 |
US20070230653A1 (en) | 2007-10-04 |
JP4874810B2 (ja) | 2012-02-15 |
JPWO2006057304A1 (ja) | 2008-06-05 |
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