JP4619781B2 - プラークの成分を検出するためのシステム - Google Patents
プラークの成分を検出するためのシステム Download PDFInfo
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- JP4619781B2 JP4619781B2 JP2004523269A JP2004523269A JP4619781B2 JP 4619781 B2 JP4619781 B2 JP 4619781B2 JP 2004523269 A JP2004523269 A JP 2004523269A JP 2004523269 A JP2004523269 A JP 2004523269A JP 4619781 B2 JP4619781 B2 JP 4619781B2
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4035—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/405—Source units specially adapted to modify characteristics of the beam during the data acquisition process
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4208—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
- A61B6/4241—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using energy resolving detectors, e.g. photon counting
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. 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 for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/48—Diagnostic techniques
- A61B6/482—Diagnostic techniques involving multiple energy imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
- A61B90/37—Surgical systems with images on a monitor during operation
- A61B2090/374—NMR or MRI
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
- A61B90/37—Surgical systems with images on a monitor during operation
- A61B2090/376—Surgical systems with images on a monitor during operation using X-rays, e.g. fluoroscopy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
- A61B6/582—Calibration
- A61B6/583—Calibration using calibration phantoms
Description
Cheng Hong、Kyongtae T.Bae及びThomas K.Pilgram、「Coronary Artery Calcium:Accuracy and Reproducibility of Measurements with Multi−Detector Row CT−Assessment of Effects of Different Thresholds and Quantification Methods 1」(Radiology 2003、227:795〜801頁) Sandra S.Halliburton、Arthur E.Stillman、Richard D.White、「Noninvasive quantification of coronary artery calcification:Methods and prognostic value」(Cleveland Clinic Journal Of Medicine、Volume 69、Supplement) Fayadら、「CT and MR for coronary Angiography & plaque imaging」(Circulation、2002年10月、2026〜2033頁)
12 ガントリ
14 X線源
16 X線ビーム
18 検出器アレイ
20 検出器素子
22 患者
24 回転中心
26 制御機構
28 X線制御装置
30 ガントリ・モータ制御装置
32 DAS
34 画像再構成装置
36 コンピュータ
38 記憶デバイス
40 コンソール
44 テーブル・モータ制御装置
46 テーブル
48 ガントリ開口
50 読み取りデバイス
52 コンピュータ読み取り可能媒体
Claims (10)
- 多重エネルギー・コンピュータ断層(MECT)システムであって、
被検体と交差するX線を送出するように構成された少なくとも1つの放射線源と、
前記X線を検出するように構成された少なくとも1つの検出器と、
前記検出器と結合させた制御装置と、
該MECTシステムにプラークの成分を検出するように指令するように構成されたコンピュータと、
を備え、
前記コンピュータは更に、
a)複数の模擬ファントームを用いた、複数の物質に対応するルックアップ・テーブルの作成する段階と、
b)第1及び第2のエネルギー・レベルで被検体をスキャンして、第1及び第2のエネルギー・スペクトルの投影データを作成する段階と、
c)前記ルックアップ・テーブルから、前記被検体の投影データを、前記複数の物質から選択した物質を素地とした、該素地の密度に逆マッピングすることによって、前記被検体の前記素地の密度画像を再構成する段階と、
d)前記被検体に造影剤が投与された後に、前記複数の物質のうち、前記選択した物質と異なる、前記造影剤に対応した物質を選択して、前記段階b)及びc)を反復する段階と、
を実行するように構成されている、MECTシステム。 - 前記ルックアップ・テーブルは様々なエネルギー・スペクトルに関して前記ファントームの選択された素地の様々な密度を投影データにマッピングしており、
前記コンピュータは、前記ルックアップ・テーブルを用いることによるプラークの成分の取得と、
を実行するように構成されている、請求項1に記載のMECTシステム。 - ルックアップ・テーブルを作成するために前記コンピュータは、
既知の材料特性の組を備えたファントームの第1組及び第2組の密度分布画像を、
該MECTシステムのスキャン範囲内での前記ファントームの配置のシミュレーション、及び
該MECTシステムを用いた第1及び第2のエネルギー・レベルでの前記ファントームのスキャンのシミュレーション、
によって取得するように構成されている、請求項1に記載のMECTシステム。 - 前記ルックアップ・テーブルが既知の様々なヨウ素濃度のすべてに対して形成されており、
プラークの成分を取得するために前記コンピュータは、
該MECTシステムのスキャン範囲内に被検体を配置させるように該MECTシステムに指令すること、
前記被検体の投影データを取得するために、前記第1及び第2のエネルギー・レベルで前記被検体をスキャンするように該MECTシステムに指令すること、
前記ルックアップ・テーブルから、前記被検体の投影データを、ヨウ素と水のうちの少なくとも一方を含む前記選択した素地の密度に逆マッピングすることによって、前記被検体の密度を決定すること、
を実行するように構成されている、請求項3に記載のMECTシステム。 - 前記コンピュータは、
プラークの脂質親和体、プラークのプラーク特異的抗原、及びプラークのプラーク細胞のうちの少なくとも1つに造影剤を投与するようにユーザに指令すること、
前記プラークの成分の検出を反復すること、
を実行するように構成されている、請求項1に記載のMECTシステム。 - 前記造影剤が温度感受性造影剤であり、
前記コンピュータは、
炎症性プラークに温度感受性造影剤を投与するようにユーザに指令すること、
を実行するように構成されている、請求項1に記載のMECTシステム。 - 前記コンピュータはプラークの成分を定量化するように構成されている、請求項1乃至6のいずれかに記載のMECTシステム。
- プラークの成分を定量化するために前記コンピュータは、
前記プラークの組成分布を計算すること、
総プラーク負荷を計算すること、
を実行するように構成されている、請求項7に記載のMECTシステム。 - 前記コンピュータは、
前記被検体のある臓器の壁上にあるプラークの成分に関する2次元(2D)画像と3次元(3D)画像の少なくとも一方を表示するように表示デバイスに指令すること、
3D画像で前記プラークのボリュームをある観察点から観察することを可能にさせること、
を実行するように構成されている、請求項1乃至8のいずれかに記載のMECTシステム。 - 前記コンピュータは、
金属製のステント及び弁のうちの少なくとも1つを有する被検体の画像の品質を、前記画像内のビーム硬化アーチファクトを除去することによって改善させること、
プラークの成分を検出する前記工程を反復することによって、金属製ステントのうちの少なくとも1つの内部にある再狭窄を描出可能にさせること、
を実行するように構成されている、請求項1乃至9のいずれかに記載のMECTシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US39834102P | 2002-07-23 | 2002-07-23 | |
PCT/US2003/022861 WO2004008967A1 (en) | 2002-07-23 | 2003-07-23 | Methods and systems for detecting components of plaque |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005533564A JP2005533564A (ja) | 2005-11-10 |
JP2005533564A5 JP2005533564A5 (ja) | 2008-09-18 |
JP4619781B2 true JP4619781B2 (ja) | 2011-01-26 |
Family
ID=30771215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004523269A Expired - Fee Related JP4619781B2 (ja) | 2002-07-23 | 2003-07-23 | プラークの成分を検出するためのシステム |
Country Status (6)
Country | Link |
---|---|
US (1) | US7031426B2 (ja) |
EP (1) | EP1526808B1 (ja) |
JP (1) | JP4619781B2 (ja) |
CN (1) | CN100536774C (ja) |
AU (1) | AU2003252103A1 (ja) |
WO (1) | WO2004008967A1 (ja) |
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CN1556688A (zh) | 2004-12-22 |
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AU2003252103A1 (en) | 2004-02-09 |
JP2005533564A (ja) | 2005-11-10 |
EP1526808A1 (en) | 2005-05-04 |
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