JP2021512671A - 固有運動補正を有するスタック・オブ・スター収集を用いたmr撮像 - Google Patents
固有運動補正を有するスタック・オブ・スター収集を用いたmr撮像 Download PDFInfo
- Publication number
- JP2021512671A JP2021512671A JP2020540801A JP2020540801A JP2021512671A JP 2021512671 A JP2021512671 A JP 2021512671A JP 2020540801 A JP2020540801 A JP 2020540801A JP 2020540801 A JP2020540801 A JP 2020540801A JP 2021512671 A JP2021512671 A JP 2021512671A
- Authority
- JP
- Japan
- Prior art keywords
- image
- space
- motion
- stack
- imaging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000033001 locomotion Effects 0.000 title claims abstract description 53
- 238000003384 imaging method Methods 0.000 title claims abstract description 37
- 238000012937 correction Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000004590 computer program Methods 0.000 claims abstract description 6
- 230000009466 transformation Effects 0.000 claims description 14
- 238000007689 inspection Methods 0.000 claims description 13
- 238000000844 transformation Methods 0.000 claims description 5
- 238000005070 sampling Methods 0.000 description 13
- 238000013459 approach Methods 0.000 description 10
- 230000005415 magnetization Effects 0.000 description 10
- 230000005284 excitation Effects 0.000 description 6
- 238000002595 magnetic resonance imaging Methods 0.000 description 6
- 230000002123 temporal effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
- G01R33/4824—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a non-Cartesian trajectory
- G01R33/4826—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a non-Cartesian trajectory in three dimensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/543—Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
- G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
- G01R33/5616—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using gradient refocusing, e.g. EPI
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
- G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
- G01R33/5617—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using RF refocusing, e.g. RARE
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
- G01R33/5619—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences by temporal sharing of data, e.g. keyhole, block regional interpolation scheme for k-Space [BRISK]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
- G01R33/56308—Characterization of motion or flow; Dynamic imaging
- G01R33/56325—Cine imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/567—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution gated by physiological signals, i.e. synchronization of acquired MR data with periodical motion of an object of interest, e.g. monitoring or triggering system for cardiac or respiratory gating
- G01R33/5676—Gating or triggering based on an MR signal, e.g. involving one or more navigator echoes for motion monitoring and correction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
- G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
- G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
- G01R33/5618—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using both RF and gradient refocusing, e.g. GRASE
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Physiology (AREA)
- Power Engineering (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
対象物を、RFパルス及び切り替え磁場勾配を有する撮像シーケンスにかけることによって、MR信号を生成するステップと、
stack‐of‐stars又はstack‐of‐spiralsスキームに従って信号データを収集するステップであり、MR信号が、スライス方向に沿って隣接する位置に配置された複数の平行なスライスからラジアル又はスパイラルk空間プロファイルとして収集され、当該収集において、k空間の中心部がk空間の周辺部よりも密にサンプリングされる、収集するステップと、
複数の連続した時間インターバルの各々についてサブサンプリングされた信号データから中間MR画像を再構成するステップと、
中間MR画像を互いにレジストレーションすることによって、動き誘起変位及び/又は変形を導出するステップと、
サブサンプリングされた信号データを結合し、それから最終MR画像を再構成するステップであり、導出された動き誘起変位及び/又は変形に従って動き補正が適用される、ステップと、
を有する。
動き状態を捕捉する時間的フットプリントを改善するための他の方法は、例えば、CENTRA順序付け(WO2016/202707A1を参照)を用いること又は収集速度を改善するRotated Stack−of−Stars法(Zhou等,“Golden-ratio rotated stack-of-stars acquisition for improved volumetric MRI”,Magn. Reson. Med.,2017を参照)の使用によって、サンプリング順序に影響を与えることである。また、ハーフスキャンアプローチが採用されてもよい。
Claims (12)
- MR装置の検査ボリューム内に位置付けられた対象物のMR撮像の方法であって、
前記対象物を、RFパルス及び切り替え磁場勾配を有する撮像シーケンスにかけることによって、MR信号を生成するステップと、
スタック・オブ・スター又はスタック・オブ・スパイラルスキームに従って信号データを収集し、前記MR信号が、スライス方向に沿って隣接する位置に配置された複数の平行なスライスから、k空間の楕円体又は球体ボリュームをサンプリングするラジアル又はスパイラルk空間プロファイルとして収集され、当該収集において、k空間の3次元楕円体又は球体の中心部が、k空間の周辺部よりも密にサンプリングされる、収集するステップと、
複数の連続した時間インターバルの各々についてサブサンプリングされた信号データからそれぞれの中間MR画像を再構成するステップと、
弾性画像レジストレーションによって、異なる前記中間MR画像の各々を1つの共通座標系へと変換する幾何学変換を決定するステップと、
前記中間MR画像に前記幾何学変換を適用して、発生した動きを補正し、動き補正された中間MR画像を生じさせるステップと、
前記動き補正された中間MR画像を高解像度の最終MR画像へと結合するステップと、
を有する方法。 - 各時間インターバルにおいて、k空間の前記中心部はナイキスト基準に従ってサンプリングされ、k空間の前記周辺部はサブサンプリングされる、請求項1に記載の方法。
- k空間の前記中心部は、前記周辺部と比較して時間的に密にサンプリングされる、請求項2に記載の方法。
- 前記動き補正された中間MR画像は、画像空間内又はk空間内のいずれかで前記最終MR画像へと結合される、請求項3に記載の方法。
- 前記中間MR画像は、k空間強調画像コントラスト(KWIC)フィルタを用いて再構成される、請求項1乃至4のいずれか一項に記載の方法。
- 前記中間MR画像は、それぞれの前記時間インターバルに帰属する導出された動き誘起変位及び/又は変形に従って補正される、請求項4又は5に記載の方法。
- 前記信号データは、前記最終MR画像の再構成において、導出された動き誘起変位及び/又は変形の程度に対応して重み付けされる、請求項1乃至6のいずれか一項に記載の方法。
- 前記重み付けは、前記動き補正された中間MR画像の類似度から導出される、請求項7に記載の方法。
- 前記撮像シーケンスは、ターボフィールドエコー(TFE)若しくは平衡(ターボ)フィールドエコーシーケンス、又はエコープラナーイメージング(EPI)シーケンス、又はターボスピンエコー(TSE)シーケンス、又はGRASEシーケンスである、請求項1乃至8のいずれか一項に記載の方法。
- 一連のk空間プロファイルの収集において、前記ラジアルk空間プロファイルの回転角が、ゴールデンアングルスキームに従って増分される、請求項1乃至9のいずれか一項に記載の方法。
- 検査ボリューム内に均一な定常磁場B0を生成する少なくとも1つの主磁石コイルと、前記検査ボリューム内に異なる空間方向の切り替え磁場勾配を生成する複数のグラディエントコイルと、前記検査ボリューム内にRFパルスを生成し且つ/或いは前記検査ボリューム内に位置付けられた対象物からMR信号を受信する少なくとも1つのRFコイルと、時間的に一連の前記RFパルス及び切り替え磁場勾配を制御する制御ユニットと、受信された前記MR信号からMR画像を再構成する再構成ユニットと、を含むMR装置であって、
当該MR装置は:
前記対象物を、RFパルス及び切り替え磁場勾配を有する撮像シーケンスにかけることによって、MR信号を生成するステップと、
スタック・オブ・スター又はスタック・オブ・スパイラルスキームに従って信号データを収集し、前記MR信号が、スライス方向に沿って隣接する位置に配置された複数の平行なスライスから、k空間の楕円体又は球体ボリュームをサンプリングするラジアル又はスパイラルk空間プロファイルとして収集され、当該収集において、k空間の3次元楕円体又は球体の中心部が、k空間の周辺部よりも密にサンプリングされる、収集するステップと、
複数の連続した時間インターバルの各々についてサブサンプリングされた信号データからそれぞれの中間MR画像を再構成するステップと、
弾性画像レジストレーションによって、異なる前記中間MR画像の各々を1つの共通座標系へと変換する幾何学変換を決定するステップと、
前記中間MR画像に前記幾何学変換を適用して、発生した動きを補償し、動き補正された中間MR画像を生じさせるステップと、
中間MR画像を互いにレジストレーションすることによって、動き誘起変位及び/又は変形を導出するステップと、
前記動き補正された中間MR画像を高解像度の最終MR画像へと結合するステップと、
を実行するように構成されている、
MR装置。 - MR装置上で実行されるコンピュータプログラムであって、
RFパルス及び切り替え磁場勾配を有する撮像シーケンスを生成し、
スタック・オブ・スター又はスタック・オブ・スパイラルスキームに従って信号データを収集し、MR信号が、スライス方向に沿って隣接する位置に配置された複数の平行なスライスから、k空間の楕円体又は球体ボリュームをサンプリングするラジアル又はスパイラルk空間プロファイルとして収集され、当該収集において、k空間の3次元楕円体又は球体の中心部が、k空間の周辺部よりも密にサンプリングされ、
複数の連続した時間インターバルの各々についてサブサンプリングされた信号データから中間MR画像を再構成し、
弾性画像レジストレーションによって、異なる前記中間MR画像の各々を1つの共通座標系へと変換する幾何学変換を決定し、
前記中間MR画像に前記幾何学変換を適用して、発生した動きを補償し、動き補正された中間MR画像を生じさせ、
中間MR画像を互いにレジストレーションすることによって、動き誘起変位及び/又は変形を導出し、
前記動き補正された中間MR画像を高解像度の最終MR画像へと結合する、
ための命令群を有するコンピュータプログラム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18153867.9A EP3517988A1 (en) | 2018-01-29 | 2018-01-29 | Mr imaging using a stack-of-stars acquisition with intrinsic motion correction |
EP18153867.9 | 2018-01-29 | ||
PCT/EP2019/051975 WO2019145527A1 (en) | 2018-01-29 | 2019-01-28 | Mr imaging using a stack-of-stars acquisition with intrinsic motion correction |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2021512671A true JP2021512671A (ja) | 2021-05-20 |
Family
ID=61074390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020540801A Pending JP2021512671A (ja) | 2018-01-29 | 2019-01-28 | 固有運動補正を有するスタック・オブ・スター収集を用いたmr撮像 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210109181A1 (ja) |
EP (1) | EP3517988A1 (ja) |
JP (1) | JP2021512671A (ja) |
CN (1) | CN111656209A (ja) |
DE (1) | DE112019000571T5 (ja) |
WO (1) | WO2019145527A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023276834A1 (ja) * | 2021-06-29 | 2023-01-05 | 富士フイルム株式会社 | 画像処理装置、正解データ生成装置、類似画像検索装置、画像処理方法、及びプログラム |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7350568B2 (ja) * | 2019-08-28 | 2023-09-26 | キヤノンメディカルシステムズ株式会社 | 磁気共鳴データ収集方法及び磁気共鳴イメージング装置 |
GB2608404B (en) * | 2021-06-30 | 2023-07-05 | Siemens Healthcare Gmbh | Method of reconstructing a dynamic series of motion-compensated magnetic resonance images |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150285889A1 (en) * | 2014-04-02 | 2015-10-08 | University Of Virginia Patent Foundation | Systems and methods for accelerated imaging using variable density sampling and compressed sensing with parallel imaging |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9919821D0 (en) | 1999-08-20 | 1999-10-27 | Imperial College | Phase ordering with automatic window selection (PAWS):A novel motion resistant technique for 3D coronary imaging |
EP2539728B1 (en) * | 2010-02-25 | 2017-11-15 | MCW Research Foundation, Inc. | Method for simultaneous multi-slice magnetic resonance imaging using single and multiple channel receiver coils |
WO2013159044A1 (en) | 2012-04-19 | 2013-10-24 | New York University | System, method and computer-accessible medium for highly-accelerated dynamic magnetic resonance imaging using golden-angle radial samplng and compressed sensing |
US9366738B2 (en) * | 2014-09-01 | 2016-06-14 | bioProtonics, L.L.C | Selective sampling magnetic resonance-based method for assessing structural spatial frequencies |
CN104597420B (zh) * | 2015-02-02 | 2018-01-16 | 清华大学 | 基于多次激发的磁共振扩散成像方法 |
JP6865697B2 (ja) | 2015-06-15 | 2021-04-28 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | スタックオブスター獲得を使用したmr像形成 |
WO2017167937A1 (en) * | 2016-03-31 | 2017-10-05 | Koninklijke Philips N.V. | Dynamic mr imaging with increased temporal and spatial resolution |
WO2017173437A1 (en) * | 2016-04-01 | 2017-10-05 | The Medical College Of Wisconsin, Inc. | Systems and methods for motion management in magnetic resonance imaging guided therapies |
-
2018
- 2018-01-29 EP EP18153867.9A patent/EP3517988A1/en not_active Withdrawn
-
2019
- 2019-01-28 US US16/965,030 patent/US20210109181A1/en not_active Abandoned
- 2019-01-28 CN CN201980010813.XA patent/CN111656209A/zh active Pending
- 2019-01-28 DE DE112019000571.5T patent/DE112019000571T5/de active Pending
- 2019-01-28 JP JP2020540801A patent/JP2021512671A/ja active Pending
- 2019-01-28 WO PCT/EP2019/051975 patent/WO2019145527A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150285889A1 (en) * | 2014-04-02 | 2015-10-08 | University Of Virginia Patent Foundation | Systems and methods for accelerated imaging using variable density sampling and compressed sensing with parallel imaging |
Non-Patent Citations (3)
Title |
---|
CHEN,XIAO ET AL.: "Motion-Compensated Compressed Sensing for Dynamic Contrast-Enhanced MRI Using Regional Spatiotempora", MAGNETIC RESONANCE IN MEDICINE, vol. 72, JPN6022040858, 18 November 2013 (2013-11-18), US, pages 1028 - 1038, XP055483747, ISSN: 0004977627, DOI: 10.1002/mrm.25018 * |
KYBIC JAN, ET AL.: "Fast Parametric Elastic Image Registration", IEEE TRANSACTIONS ON IMAGE PROCESSING, vol. 12, no. 11, JPN6023002544, November 2003 (2003-11-01), US, pages 1427 - 1442, XP011102712, ISSN: 0004977628, DOI: 10.1109/TIP.2003.813139 * |
SONG,HEE KWON ET AL.: "k-Space Weighted Image Contrast(KWIC)for Contrast Manipulation in Projection Reconstruction MRI", MAGNETIC RESONANCE IN MEDICINE, vol. 44, JPN6022040859, 15 August 2000 (2000-08-15), US, pages 825 - 832, ISSN: 0004977629 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023276834A1 (ja) * | 2021-06-29 | 2023-01-05 | 富士フイルム株式会社 | 画像処理装置、正解データ生成装置、類似画像検索装置、画像処理方法、及びプログラム |
Also Published As
Publication number | Publication date |
---|---|
CN111656209A (zh) | 2020-09-11 |
DE112019000571T5 (de) | 2020-10-15 |
US20210109181A1 (en) | 2021-04-15 |
WO2019145527A1 (en) | 2019-08-01 |
EP3517988A1 (en) | 2019-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6446027B2 (ja) | 高snrの同相画像及び低snrの少なくとも部分的に異相の画像を使用するディクソン型の水/脂肪分離mri | |
JP2018519909A (ja) | 動き検出を用いるmr撮像 | |
EP3635425B1 (en) | Mr imaging using a stack-of-stars acquisition with variable contrast | |
CN106796274B (zh) | 具有伪迹抑制的propeller-mr成像 | |
JP7446328B2 (ja) | ソフト動きゲーティングによる3dラジアル又はスパイラル収集を用いたmr画像 | |
JP2021512671A (ja) | 固有運動補正を有するスタック・オブ・スター収集を用いたmr撮像 | |
US11543482B2 (en) | Magnetic resonance imaging using motion-compensated image reconstruction | |
JP2020522344A (ja) | 並列マルチスライスmr撮像 | |
WO2018114554A1 (en) | Dixon-type water/fat separation mr imaging | |
US11269037B2 (en) | MR imaging using motion-dependent radial or spiral k-space sampling | |
US20220413080A1 (en) | 3D MR Imaging with Intrinsic Motion Detection | |
US11914016B2 (en) | Optimized k-space profile ordering for 3D radial MR imaging | |
EP3185029A1 (en) | Mr imaging using propeller acquisition with t2 decay correction | |
JP2022521277A (ja) | ウェーブ符号化を用いたパラレルmrイメージング | |
EP3118643A1 (en) | Dynamic propeller mr imaging |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200730 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20220125 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20221004 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230131 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20230905 |