JP2017507742A - 低磁場マルチチャネル撮像のためのシステムおよび方法 - Google Patents
低磁場マルチチャネル撮像のためのシステムおよび方法 Download PDFInfo
- Publication number
- JP2017507742A JP2017507742A JP2016556954A JP2016556954A JP2017507742A JP 2017507742 A JP2017507742 A JP 2017507742A JP 2016556954 A JP2016556954 A JP 2016556954A JP 2016556954 A JP2016556954 A JP 2016556954A JP 2017507742 A JP2017507742 A JP 2017507742A
- Authority
- JP
- Japan
- Prior art keywords
- coils
- coil
- receive
- parallel
- magnetic field
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000003384 imaging method Methods 0.000 title claims description 21
- 238000002595 magnetic resonance imaging Methods 0.000 claims abstract description 94
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 25
- 238000005259 measurement Methods 0.000 claims description 23
- 230000005284 excitation Effects 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 11
- 210000003484 anatomy Anatomy 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 20
- 238000012545 processing Methods 0.000 description 9
- 230000000670 limiting effect Effects 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012935 Averaging Methods 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 210000004556 brain Anatomy 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000241 respiratory effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000002872 contrast media Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 208000032382 Ischaemic stroke Diseases 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 208000030886 Traumatic Brain injury Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000006931 brain damage Effects 0.000 description 1
- 231100000874 brain damage Toxicity 0.000 description 1
- 208000029028 brain injury Diseases 0.000 description 1
- 210000003710 cerebral cortex Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000877 corpus callosum Anatomy 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000010997 low field NMR spectroscopy Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009529 traumatic brain injury Effects 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3642—Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
- G01R33/3657—Decoupling of multiple RF coils wherein the multiple RF coils do not have the same function in MR, e.g. decoupling of a transmission coil from a receive coil
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
-
- 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
- G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
-
- 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]
- G01R33/445—MR involving a non-standard magnetic field B0, e.g. of low magnitude as in the earth's magnetic field or in nanoTesla spectroscopy, comprising a polarizing magnetic field for pre-polarisation, B0 with a temporal variation of its magnitude or direction such as field cycling of B0 or rotation of the direction of B0, or spatially inhomogeneous B0 like in fringe-field MR or in stray-field 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
- G01R33/561—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
- G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE
-
- 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
-
- 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3642—Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
- G01R33/365—Decoupling of multiple RF coils wherein the multiple RF coils have the same function in MR, e.g. decoupling of a receive coil from another receive coil in a receive coil array, decoupling of a transmission coil from another transmission coil in a transmission coil array
-
- 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
- G01R33/5635—Angiography, e.g. contrast-enhanced angiography [CE-MRA] or time-of-flight angiography [TOF-MRA]
-
- 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
- G01R33/5673—Gating or triggering based on a physiological signal other than an MR signal, e.g. ECG gating or motion monitoring using optical systems for monitoring the motion of a fiducial marker
Abstract
Description
本出願は、2014年3月14日に出願された、「SYSTEM AND METHOD FOR LOW−FIELD,MULTI−CHANNEL IMAGING」と題する米国仮特許出願第61/953,384号に基づくとともに、その優先権を主張する。この文献は、参照することにより、本明細書に組み込まれる。
本発明は、国防総省によって与えられたW81XWH−11−2−076の下での政府の支援を伴ってなされたものである。政府は、本発明における一定の権利を有する。
Claims (34)
- 低磁場磁気共鳴撮像(lfMRI)システムを用いてパラレル磁気共鳴撮像(pMRI
)プロセスを実施するためのコイルシステムであって、
pMRIプロセスを用いて前記lfMRIシステムによって撮像される対象の部分の輪
郭に沿うように構成された基板と、
前記基板に結合された複数のコイルと、を備え、
前記複数のコイルの各コイルが、前記lfMRIシステムを用いて前記pMRIプロセ
スを実施するために前記複数のコイルを作動させるように選択された、巻き数と、関連
する分離機構と、を有する、コイルシステム。 - 前記巻き数および前記関連する分離機構が、6.5mTの磁場強度で作動するように選
択された、請求項1に記載のコイルシステム。 - 前記複数のコイルは受動的に分離された、請求項1に記載のコイルシステム。
- 送信コイルが、直列に配置された交差ダイオードを使用して受動的に分離されるよう構
成された、請求項3に記載のコイルシステム。 - 受信コイルが、並列に配置された交差ダイオードを使用して受動的に分離されるよう構
成された、請求項3に記載のコイルシステム。 - 前記複数のコイルの前記各コイルは、276.0kHzにチューニングされている、請
求項1に記載のコイルシステム。 - 前記複数のコイルの前記各コイルは、少なくとも−27dBにマッチされている、請求
項1に記載のコイルシステム。 - 前記複数のコイルの前記各コイルは、これらのもっとも近くの隣接コイルから少なくと
も−30dBだけ幾何学的に分離されている、請求項1に記載のコイルシステム。 - 次に近い隣接コイルからの分離は、少なくとも−6dBである、請求項8に記載のコイ
ルシステム。 - 磁気共鳴撮像(MRI)システムであって、
前記MRIシステム内に配置された対象の少なくとも関心領域(ROI)周りで低磁場静磁場を生成するように構成された磁気システムと、
前記低磁場静磁場に対して少なくとも1つの傾斜磁場を定めるように構成された複数の勾配磁場コイルと、
ローカルコイルを含むラジオ周波数(RF)システムと、を備え、
前記ローカルコイルが、
前記ROIを含む前記対象の部分の輪郭に沿うように構成された基板と、
前記基板に結合された複数のコイルと、を有し、
前記複数のコイルの各コイルが、前記低磁場静磁場を用いてパラレル撮像プロセスを実施するために前記複数のコイルを作動させるように選択された、巻き数と、関連する分離機構と、を有する、MRIシステム。 - 磁場強度が6.5mTである、請求項10に記載のMRIシステム。
- 前記巻き数および前記関連する分離機構が、前記低磁場静磁場で作動するように選択さ
れた、請求項10に記載のMRIシステム。 - 前記複数のコイルが受動的に分離されるよう構成された、請求項10に記載のMRIシ
ステム。 - 送信コイルが、直列に配置された交差ダイオードを使用して受動的に分離されるよう構
成された、請求項13に記載のMRIシステム。 - 受信コイルが、並列に配置された交差ダイオードを使用して受動的に分離されるよう構
成された、請求項13に記載のMRIシステム。 - 前記複数のコイルの前記各コイルは、276.0kHzにチューニングされている、請
求項10に記載のMRIシステム。 - 前記複数のコイルの前記各コイルは、少なくとも−27dBにマッチされている、請求
項1に記載のMRIシステム。 - 前記複数のコイルの前記各コイルは、これらのもっとも近くの隣接コイルから少なくと
も−30dBだけ幾何学的に分離されている、請求項1に記載のMRIシステム。 - 次に近い隣接コイルからの分離は、少なくとも−6dBである、請求項18に記載のM
RIシステム。 - 前記複数のコイルの前記各コイルが、前記ROI周りに、かつ低磁場静磁場に対し長手
方向または横断方向に、並べられるように、タイル状に配置された、請求項10に記載の
MRIシステム。 - 低磁場磁気共鳴撮像での使用のための並列受信コイルアレイであって、
関心領域周りの3次元構造内に配置された複数の受信コイルを備え、
前記複数の受信コイルの各受信コイルが、それぞれの複数の巻き数を有する、並列受信コイルアレイ。 - 前記複数の受信コイルの各受信コイルが、少なくとも1つの隣接する受信コイルと重なり合っている、請求項21に記載の並列受信コイルアレイ。
- 前記複数の受信コイルの各受信コイルが、前記それぞれの複数の巻き数に応じてワイヤを巻くことによって形成された、請求項21に記載の並列受信コイルアレイ。
- 前記ワイヤがリッツ線である、請求項23に記載の並列受信コイルアレイ。
- 人間の解剖学的構造の部分のために構成された、請求項21に記載の並列受信コイルアレイであって、前記複数の受信コイルが、対象の前記人間の解剖学的構造の前記部分の磁気共鳴とともに作動した時に、前記対象の体の長手軸にほぼ平行な方向に発せられた磁気共鳴信号を検出することが可能である、並列受信コイルアレイ。
- 前記複数の受信コイルの各受信コイルが、前記それぞれの受信コイルを送信コイルから分離するように、受動分離回路に接続されている、請求項21に記載の並列受信コイルアレイ。
- 前記受動分離回路が、前記それぞれの受信コイルと並列に接続された一対の交差ダイオードを備えた、請求項26に記載の並列受信コイルアレイ。
- 前記複数の受信コイルの少なくとも1つについての前記巻き数が、10より大である、請求項21に記載の並列受信コイルアレイ。
- 前記複数の受信コイルの少なくとも1つについての前記巻き数が、20より大である、請求項21に記載の並列受信コイルアレイ。
- 前記複数の受信コイルの少なくとも1つについての前記ワイヤの長さが、100cmより大である、請求項23に記載の並列受信コイルアレイ。
- 前記複数の受信コイルの少なくとも1つについての前記ワイヤの長さが、200cmより大である、請求項23に記載の並列受信コイルアレイ。
- 前記複数の受信コイルは、0.2T以下のB0磁場の周波数特性を検出するようにチューニングされた、請求項23に記載の並列受信コイルアレイ。
- 低磁場磁気共鳴撮像システムにおいて信号対ノイズ比を低減させる方法であって、
関心領域に対して励起パルスシーケンスを提供することと、
数の増大した測定を並行して得るために複数の受信コイルを使用して前記励起パルスシーケンスに応じて発せられた磁気共鳴測定を検出することと、
前記関心領域内の各位置についての値を得るために平均化された測定の数を増大させるために、前記並行して得られた数の増大した測定を利用することと、を含む、方法。 - 前記数の増大した測定を、部分的に、平均化された測定の数を増大させるために、部分的に、全体の取得時間を短縮するために、利用する、請求項33に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201461953384P | 2014-03-14 | 2014-03-14 | |
US61/953,384 | 2014-03-14 | ||
PCT/US2015/020509 WO2015138939A1 (en) | 2014-03-14 | 2015-03-13 | System and method for low-field, multi-channel imaging |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019114788A Division JP2019177189A (ja) | 2014-03-14 | 2019-06-20 | 低磁場マルチチャネル撮像のためのシステムおよび方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017507742A true JP2017507742A (ja) | 2017-03-23 |
JP6791760B2 JP6791760B2 (ja) | 2020-11-25 |
Family
ID=54072478
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016556954A Active JP6791760B2 (ja) | 2014-03-14 | 2015-03-13 | 低磁場マルチチャネル撮像のためのシステムおよび方法 |
JP2019114788A Pending JP2019177189A (ja) | 2014-03-14 | 2019-06-20 | 低磁場マルチチャネル撮像のためのシステムおよび方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019114788A Pending JP2019177189A (ja) | 2014-03-14 | 2019-06-20 | 低磁場マルチチャネル撮像のためのシステムおよび方法 |
Country Status (10)
Country | Link |
---|---|
US (1) | US10830848B2 (ja) |
EP (1) | EP3117231A4 (ja) |
JP (2) | JP6791760B2 (ja) |
KR (1) | KR102346071B1 (ja) |
CN (1) | CN107076813B (ja) |
AU (2) | AU2015229122A1 (ja) |
BR (1) | BR112016020838A2 (ja) |
CA (1) | CA2942390A1 (ja) |
MX (1) | MX363069B (ja) |
WO (1) | WO2015138939A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11883115B2 (en) | 2020-06-11 | 2024-01-30 | Northern Digital, Inc. | Electromagnetic position measurement system with sensor parasitic loop compensation |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11385312B2 (en) * | 2015-03-27 | 2022-07-12 | Michael Hutchinson | Ultrafast MRI system and method |
US10551448B2 (en) * | 2016-04-22 | 2020-02-04 | New York University | Trellis coil arrangement and methods for use thereof |
US10627464B2 (en) | 2016-11-22 | 2020-04-21 | Hyperfine Research, Inc. | Low-field magnetic resonance imaging methods and apparatus |
KR20190087455A (ko) * | 2016-11-22 | 2019-07-24 | 하이퍼파인 리서치, 인크. | 자기 공명 이미지들에서의 자동화된 검출을 위한 시스템들 및 방법들 |
EP3616324A1 (en) * | 2017-04-28 | 2020-03-04 | Raytheon Company | Diode-based transmitter and receiver detuning circuits |
AU2019272580A1 (en) | 2018-05-21 | 2020-11-12 | Hyperfine Operations, Inc. | Radio-frequency coil signal chain for a low-field MRI system |
CA3106683A1 (en) * | 2018-07-31 | 2020-02-06 | Hyperfine Research, Inc. | Medical imaging device messaging service |
SG11202109090SA (en) | 2019-02-22 | 2021-09-29 | Promaxo Inc | Pseudo-birdcage coil with variable tuning and applications thereof |
CN111474507B (zh) * | 2020-04-10 | 2021-08-10 | 电子科技大学 | 一种mr-ept谱仪专用多通道射频回波信号下变频器 |
EP4278200A1 (en) * | 2021-01-15 | 2023-11-22 | Hyperfine Operations, Inc. | Flexible radio frequency coil apparatus and methods for magnetic resonance imaging |
US11719775B1 (en) * | 2022-01-28 | 2023-08-08 | GE Precision Healthcare LLC | RF receiver coil with equal perimeter loops |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS638544A (ja) * | 1986-06-30 | 1988-01-14 | Mitsubishi Electric Corp | 磁気共鳴実験用受信プロ−ブ |
JPH01238849A (ja) * | 1988-03-18 | 1989-09-25 | Yokogawa Medical Syst Ltd | Nmr用rfコイル |
JPH0318348A (ja) * | 1989-06-16 | 1991-01-25 | Hitachi Ltd | 核磁気共鳴を用いた検査装置 |
JPH03268744A (ja) * | 1990-03-20 | 1991-11-29 | Hitachi Medical Corp | 磁気共鳴イメージング装置の高周波コイル |
JP2001149332A (ja) * | 1999-11-19 | 2001-06-05 | Ge Medical Systems Global Technology Co Llc | Rfコイル、磁気共鳴信号測定装置および磁気共鳴撮影装置 |
JP2005324028A (ja) * | 2004-05-14 | 2005-11-24 | General Electric Co <Ge> | 多重チャネルmri用の多巻き素子rfコイル・アレイ |
JP2006510585A (ja) * | 2002-08-29 | 2006-03-30 | アマシャム ヘルス アール アンド ディー アーベー | 磁気共鳴撮影用造影剤の製造方法並びに構成 |
US20080007250A1 (en) * | 2005-05-03 | 2008-01-10 | Wiggins Graham C | Shaped MRI Coil Array |
JP2010256318A (ja) * | 2009-04-21 | 2010-11-11 | Shieh-Yueh Yang | 極微弱磁場におけるsquid検出核磁気共鳴およびイメージング |
JP2013128857A (ja) * | 2011-04-20 | 2013-07-04 | Imris Inc | 遠隔に配された受信コイルを用いる磁気共鳴信号検出 |
Family Cites Families (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4636730A (en) | 1984-08-16 | 1987-01-13 | General Electric Company | NMR spectroscopy body probes with at least one surface coil |
US5050605A (en) | 1989-04-12 | 1991-09-24 | Fonar Corporation | Magnetic resonance imaging antennas with spiral coils and imaging methods employing the same |
US6493572B1 (en) * | 1999-09-30 | 2002-12-10 | Toshiba America Mri, Inc. | Inherently de-coupled sandwiched solenoidal array coil |
US6845262B2 (en) * | 2000-03-29 | 2005-01-18 | The Brigham And Women's Hospital, Inc. | Low-field MRI |
EP1262145B2 (en) * | 2001-05-28 | 2011-07-06 | Esaote S.p.A. | Apparatus for imaging the inner part of a body |
EP1474707B1 (en) * | 2002-02-06 | 2012-07-18 | The Regents of The University of California | Squid detected nmr and mri at ultralow fields |
US7619413B2 (en) * | 2004-05-04 | 2009-11-17 | The General Hospital Corporation | Transmit-receive array for high field MRI |
US7937131B2 (en) * | 2004-09-06 | 2011-05-03 | Gachon University Of Medicine & Science Industry-Academic Cooperation Foundation | PET—MRI hybrid apparatus and method of implementing the same |
US7187169B2 (en) * | 2004-11-03 | 2007-03-06 | The Regents Of The University Of California | NMR and MRI apparatus and method |
WO2006137946A2 (en) * | 2004-11-23 | 2006-12-28 | M2M Imaging Corp. | Coil decoupling in magnetic resonance imaging |
JP2008522651A (ja) * | 2004-12-06 | 2008-07-03 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 磁気共鳴画像化スキャナにおける受信コイルを接続する方法及び装置 |
US7642781B2 (en) | 2005-04-15 | 2010-01-05 | Cornell Research Foundation, Inc. | High-pass two-dimensional ladder network resonator |
US8035383B2 (en) | 2006-03-17 | 2011-10-11 | Hitachi, Ltd. | Magnetic resonance imaging apparatus and RF coil for magnetic resonance imaging apparatus |
EP2016436A1 (en) * | 2006-04-24 | 2009-01-21 | Koninklijke Philips Electronics N.V. | Simple decoupling of a multi-element rf coil, enabling also detuning and matching functionality |
US20090256572A1 (en) * | 2008-04-14 | 2009-10-15 | Mcdowell Andrew F | Tuning Low-Inductance Coils at Low Frequencies |
WO2009060367A1 (en) * | 2007-11-08 | 2009-05-14 | Koninklijke Philips Electronics N.V. | Method of performing an mri reference scan |
WO2009062145A1 (en) * | 2007-11-09 | 2009-05-14 | Vista Clara, Inc. | Multicoil low-field nuclear magnetic resonance detection and imaging apparatus and method |
US8175679B2 (en) * | 2007-12-26 | 2012-05-08 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Catheter electrode that can simultaneously emit electrical energy and facilitate visualization by magnetic resonance imaging |
CN101422365B (zh) * | 2008-12-16 | 2010-12-01 | 中国科学院物理研究所 | 高温squid应用中平衡脉冲外磁场的调节装置及调节方法 |
RU2540158C2 (ru) * | 2009-05-18 | 2015-02-10 | Конинклейке Филипс Электроникс Н.В. | Способ и устройство для воздействия и/или детектирования магнитных частиц |
CN101968535B (zh) * | 2009-07-28 | 2015-12-16 | 西门子(深圳)磁共振有限公司 | 体线圈组件以及利用体线圈组件产生射频场的方法 |
CN103026251B (zh) * | 2010-05-27 | 2016-05-11 | 皇家飞利浦电子股份有限公司 | Mri rf线圈阵列的多个通道的解耦 |
TWI429935B (zh) * | 2010-08-09 | 2014-03-11 | Shieh Yueh Yang | 低磁場核磁共振系統 |
JP5993866B2 (ja) * | 2010-12-10 | 2016-09-14 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 磁性粒子に影響を及ぼす及び/又は磁性粒子を検出するための装置及び方法 |
CN102068256B (zh) * | 2011-01-31 | 2012-10-24 | 汕头市超声仪器研究所有限公司 | 一种基于squid的手持式超低场mri系统 |
CN102073024B (zh) * | 2011-01-31 | 2013-03-06 | 汕头市超声仪器研究所有限公司 | 一种手持式超低场mri的成像装置 |
DE212012000043U1 (de) * | 2011-02-01 | 2013-09-06 | Aspect Magnet Technologies Ltd. | Niedrigfeld-Magnetresonanzsystem (LF-MRS) zum Erzeugen eines Magnetresonanzbildes |
US9585594B2 (en) * | 2011-05-16 | 2017-03-07 | Koninklijke Philips N.V. | Method of producing personalized RF coil array for MR imaging guided interventions |
US9885766B2 (en) * | 2012-04-17 | 2018-02-06 | Transarray LLC | Magnetic-resonance transceiver-phased array that compensates for reactive and resistive components of mutual impedance between array elements and circuit and method thereof |
KR101435943B1 (ko) * | 2012-12-11 | 2014-09-01 | 삼성전자 주식회사 | 위상 배열 코일 모듈 및 상기 위상 배열 코일 모듈을 이용한 자기 공명 영상 장치 |
US9404983B2 (en) * | 2013-03-12 | 2016-08-02 | Viewray, Incorporated | Radio frequency transmit coil for magnetic resonance imaging system |
US9720059B2 (en) * | 2013-04-03 | 2017-08-01 | National Taiwan University | Multi-channel coil array for parallel magnetic resonance imaging |
CN203432927U (zh) * | 2013-07-08 | 2014-02-12 | 东南大学 | 基于印刷电路板平面线圈的低场核磁共振探头 |
-
2015
- 2015-03-13 KR KR1020167028257A patent/KR102346071B1/ko active IP Right Grant
- 2015-03-13 US US15/125,514 patent/US10830848B2/en active Active
- 2015-03-13 CA CA2942390A patent/CA2942390A1/en not_active Abandoned
- 2015-03-13 AU AU2015229122A patent/AU2015229122A1/en not_active Abandoned
- 2015-03-13 EP EP15761770.5A patent/EP3117231A4/en active Pending
- 2015-03-13 BR BR112016020838-2A patent/BR112016020838A2/pt active Search and Examination
- 2015-03-13 CN CN201580014414.2A patent/CN107076813B/zh active Active
- 2015-03-13 MX MX2016011673A patent/MX363069B/es unknown
- 2015-03-13 JP JP2016556954A patent/JP6791760B2/ja active Active
- 2015-03-13 WO PCT/US2015/020509 patent/WO2015138939A1/en active Application Filing
-
2019
- 2019-06-20 JP JP2019114788A patent/JP2019177189A/ja active Pending
- 2019-11-08 AU AU2019261796A patent/AU2019261796B2/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS638544A (ja) * | 1986-06-30 | 1988-01-14 | Mitsubishi Electric Corp | 磁気共鳴実験用受信プロ−ブ |
JPH01238849A (ja) * | 1988-03-18 | 1989-09-25 | Yokogawa Medical Syst Ltd | Nmr用rfコイル |
JPH0318348A (ja) * | 1989-06-16 | 1991-01-25 | Hitachi Ltd | 核磁気共鳴を用いた検査装置 |
JPH03268744A (ja) * | 1990-03-20 | 1991-11-29 | Hitachi Medical Corp | 磁気共鳴イメージング装置の高周波コイル |
JP2001149332A (ja) * | 1999-11-19 | 2001-06-05 | Ge Medical Systems Global Technology Co Llc | Rfコイル、磁気共鳴信号測定装置および磁気共鳴撮影装置 |
JP2006510585A (ja) * | 2002-08-29 | 2006-03-30 | アマシャム ヘルス アール アンド ディー アーベー | 磁気共鳴撮影用造影剤の製造方法並びに構成 |
JP2005324028A (ja) * | 2004-05-14 | 2005-11-24 | General Electric Co <Ge> | 多重チャネルmri用の多巻き素子rfコイル・アレイ |
US20080007250A1 (en) * | 2005-05-03 | 2008-01-10 | Wiggins Graham C | Shaped MRI Coil Array |
JP2010256318A (ja) * | 2009-04-21 | 2010-11-11 | Shieh-Yueh Yang | 極微弱磁場におけるsquid検出核磁気共鳴およびイメージング |
JP2013128857A (ja) * | 2011-04-20 | 2013-07-04 | Imris Inc | 遠隔に配された受信コイルを用いる磁気共鳴信号検出 |
Non-Patent Citations (1)
Title |
---|
LAPIERRE CD, ET AL.: "Parallel Imaging and Acceleration in the Johnson Noise Dominated Regime", PROC. INTL. SOC. MAG. RESON. MED., vol. 21, JPN7018003727, 2013, pages 2772, ISSN: 0004124864 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11883115B2 (en) | 2020-06-11 | 2024-01-30 | Northern Digital, Inc. | Electromagnetic position measurement system with sensor parasitic loop compensation |
Also Published As
Publication number | Publication date |
---|---|
CA2942390A1 (en) | 2015-09-17 |
CN107076813A (zh) | 2017-08-18 |
KR102346071B1 (ko) | 2021-12-31 |
AU2019261796A1 (en) | 2019-11-28 |
WO2015138939A1 (en) | 2015-09-17 |
EP3117231A1 (en) | 2017-01-18 |
JP2019177189A (ja) | 2019-10-17 |
JP6791760B2 (ja) | 2020-11-25 |
US10830848B2 (en) | 2020-11-10 |
MX2016011673A (es) | 2016-12-14 |
US20170074956A1 (en) | 2017-03-16 |
BR112016020838A2 (pt) | 2021-06-08 |
AU2015229122A1 (en) | 2016-09-22 |
MX363069B (es) | 2019-03-07 |
AU2019261796B2 (en) | 2021-10-28 |
KR20160133506A (ko) | 2016-11-22 |
CN107076813B (zh) | 2021-11-09 |
EP3117231A4 (en) | 2017-12-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2019177189A (ja) | 低磁場マルチチャネル撮像のためのシステムおよび方法 | |
KR102357840B1 (ko) | 나선형 볼륨 이미징을 위한 시스템 및 방법 | |
US10261145B2 (en) | System and method for improved radio-frequency detection or B0 field shimming in magnetic resonance imaging | |
US9671481B2 (en) | Method for reducing power deposition in magnetic resonance imaging using multiband pulses and multichannel transmission | |
EP2424430B1 (en) | Interventional mr imaging with motion compensation | |
CN104330756B (zh) | 磁共振断层成像系统和方法 | |
US6377836B1 (en) | RF coil array for vertical field MRI | |
EP1118008A1 (en) | Determination of the 3d position and orientation of an internal mri receiving coil | |
JP2012130701A (ja) | データを伝送するためのシステム及び方法 | |
KR102082855B1 (ko) | 유전체 패드 및 그를 포함하는 자기공명영상장치 | |
US20170003359A1 (en) | Mri imaging using variable density spiral planar coil | |
JP6901483B2 (ja) | 磁気共鳴検査システム用の無線周波数コイルアレイ | |
US9081055B2 (en) | Method for reducing local specific absorption rate in magnetic resonance imaging using radio frequency coil array dark modes | |
KR20150030801A (ko) | Rf 수신 코일 유닛, 이를 포함하는 위상 배열 코일 장치 및 이를 포함하는 자기공명영상장치 | |
CN217332812U (zh) | 局部线圈装置及磁共振成像设备 | |
US20230358836A1 (en) | Lipid suppression in magnetic resonance imaging using multi-coil local b0 field control |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20180206 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180306 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20180822 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20181031 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20181106 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190123 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20190409 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190620 |
|
C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20190620 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20190621 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20190710 |
|
C21 | Notice of transfer of a case for reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C21 Effective date: 20190716 |
|
A912 | Re-examination (zenchi) completed and case transferred to appeal board |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20191004 |
|
C211 | Notice of termination of reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C211 Effective date: 20191008 |
|
C22 | Notice of designation (change) of administrative judge |
Free format text: JAPANESE INTERMEDIATE CODE: C22 Effective date: 20191105 |
|
C22 | Notice of designation (change) of administrative judge |
Free format text: JAPANESE INTERMEDIATE CODE: C22 Effective date: 20200407 |
|
C13 | Notice of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: C13 Effective date: 20200422 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200715 |
|
C23 | Notice of termination of proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C23 Effective date: 20200908 |
|
C03 | Trial/appeal decision taken |
Free format text: JAPANESE INTERMEDIATE CODE: C03 Effective date: 20201013 |
|
C30A | Notification sent |
Free format text: JAPANESE INTERMEDIATE CODE: C3012 Effective date: 20201013 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20201105 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6791760 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |