JP2015006323A - 画像処理装置及び画像処理方法 - Google Patents
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- 238000003672 processing method Methods 0.000 title claims description 5
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 70
- 230000017531 blood circulation Effects 0.000 claims description 38
- 230000002159 abnormal effect Effects 0.000 claims description 25
- 238000004458 analytical method Methods 0.000 claims description 22
- 238000005206 flow analysis Methods 0.000 claims description 13
- 239000008280 blood Substances 0.000 abstract 1
- 210000004369 blood Anatomy 0.000 abstract 1
- 230000003727 cerebral blood flow Effects 0.000 description 23
- 230000006870 function Effects 0.000 description 22
- 210000004556 brain Anatomy 0.000 description 15
- 210000003657 middle cerebral artery Anatomy 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 230000010412 perfusion Effects 0.000 description 8
- 210000002551 anterior cerebral artery Anatomy 0.000 description 7
- 210000003388 posterior cerebral artery Anatomy 0.000 description 7
- 238000002591 computed tomography Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 6
- 239000002872 contrast media Substances 0.000 description 5
- 238000002595 magnetic resonance imaging Methods 0.000 description 5
- 208000028867 ischemia Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013170 computed tomography imaging Methods 0.000 description 2
- 239000000700 radioactive tracer Substances 0.000 description 2
- 101000661807 Homo sapiens Suppressor of tumorigenicity 14 protein Proteins 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
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- 210000002216 heart Anatomy 0.000 description 1
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- A61B5/004—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part
- A61B5/0042—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part for the brain
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- 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
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- A61B5/0263—Measuring blood flow using NMR
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- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/20—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
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Abstract
【解決手段】画像処理装置10は、血管像を含むボリュームデータを取得するボリューム取得手段42と、ボリュームデータに基づいて血管像を示すボリュームデータを生成する血管ボリューム生成手段50と、血管像を示すボリュームデータに基づいて、複数の支配領域要のうち所要の支配領域に対応する領域の血管像を示す3次元画像データを生成する3次元画像生成手段51と、を有する。
【選択図】 図3
Description
21 CPU
41 操作支援手段
42 ボリューム取得手段
43 位置合わせ手段
44 左右分割面算出手段
45 血流解析手段
46 支配領域解析手段
47 正常半球解析手段
48 ROI設定手段
48a 正常半球用ROI設定手段
48b 異常半球用ROI設定手段
49 血流算出手段
50 血管ボリューム生成手段
51 3次元画像生成手段
Claims (10)
- 血管像を含むボリュームデータを取得する取得手段と、
前記ボリュームデータに基づいて血管像を示すボリュームデータを生成する血管ボリューム生成手段と、
前記血管像を示すボリュームデータに基づいて、複数の支配領域要のうち所要の支配領域に対応する領域の血管像を示す3次元画像データを生成する3次元画像生成手段と、
を有する画像処理装置。 - 前記3次元画像生成手段は、前記所要の支配領域に対応する領域を、前記所要の支配領域とするか、前記所要の支配領域を基準として膨張処理させた領域、又は、収縮処理させた領域とする請求項1に記載の画像処理装置。
- 前記取得手段によって前記血管像を含む複数時相のボリュームデータが取得されると、前記複数時相のボリュームデータを位置合わせする位置合わせ手段と、
前記位置合わせ後の複数時相のボリュームデータに基づいて血流解析を行なって、ピーク到達時間を示すボリュームデータと、血流量を示すボリュームデータとを生成する血流解析手段と、
前記ピーク到達時間を示すボリュームデータに基づいて血管の支配領域解析を行なって、支配領域を示すボリュームデータを生成する支配領域解析手段と、を有し、
前記3次元画像生成手段は、前記支配領域を示すボリュームデータに含まれる前記複数の支配領域の中から前記所要の支配領域を決定する請求項1に記載の画像処理装置。 - 前記支配領域を示すボリュームデータに基づいて、前記支配領域に関する関心領域を設定する関心領域設定手段と、
前記血流量を示すボリュームデータに基づいて、前記関心領域で血流値の平均値を算出する算出手段と、をさらに有する請求項3に記載の画像処理装置。 - 前記位置合わせ後の複数時相のボリュームデータの左右半球を分割する左右分割面を算出する左右分割面算出手段と、
前記血流量を示すボリュームデータに基づく前記分割された半球毎の血流量の平均値に基づいて正常半球を判断する正常半球解析手段と、をさらに有し、
前記関心領域設定手段は、前記支配領域を示すボリュームデータに基づいて、前記正常半球側に、前記支配領域に関する正常半球用の関心領域を設定する正常半球用関心領域設定手段と、前記正常半球用の関心領域の、前記左右分割面の面対称である異常半球用の関心領域を設定する異常半球用関心領域設定手段と、を有し、
前記算出手段は、前記正常半球用の関心領域と前記異常半球用の関心領域とで血流値の平均値をそれぞれ算出する請求項4に記載の画像処理装置。 - 前記正常半球解析手段は、前記血流量の平均値が大きい方を前記正常半球と判断する請求項5に記載の画像処理装置。
- 前記3次元画像生成手段は、前記血管像を示すボリュームデータを用いて位置が選択されると、前記支配領域を示すボリュームデータの中から、前記位置に対応する支配領域を前記所要の支配領域として決定する請求項3乃至6のうちいずれか一項に記載の画像処理装置。
- 前記3次元画像生成手段は、前記支配領域を示すボリュームデータを用いて位置が選択されると、前記支配領域を示すボリュームデータの中から、前記位置に対応する支配領域を前記所要の支配領域として決定する請求項3乃至6のうちいずれか一項に記載の画像処理装置。
- 前記血流解析手段は、前記支配領域を示すボリュームデータに基づいて、複数の支配領域の各支配領域の血流解析を行なって各支配領域の血流量を示すボリュームデータ要素を生成し、前記各支配領域の血流量を示すボリュームデータ要素を組み合わせて前記血流量を示すボリュームデータを生成する請求項3乃至6のうちいずれか一項に記載の画像処理装置。
- 記憶装置から血管像を含むボリュームデータを取得し、
前記ボリュームデータに基づいて血管像を示すボリュームデータを生成し、
前記血管像を示すボリュームデータに基づいて、複数の支配領域要のうち所要の支配領域に対応する領域の血管像を示す3次元画像データを生成し、
前記3次元画像データを3次元画像として表示装置に表示させる画像処理方法。
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JP2018027154A (ja) * | 2016-08-16 | 2018-02-22 | キャノンメディカルシステムズ株式会社 | 磁気共鳴イメージング装置及び医用画像処理装置 |
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US10383590B2 (en) * | 2015-09-28 | 2019-08-20 | General Electric Company | Methods and systems for adaptive scan control |
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