WO2006116980A2 - Empfangsspulen-halterung für ein mr-bildgebungssystem - Google Patents
Empfangsspulen-halterung für ein mr-bildgebungssystem Download PDFInfo
- Publication number
- WO2006116980A2 WO2006116980A2 PCT/DE2006/000753 DE2006000753W WO2006116980A2 WO 2006116980 A2 WO2006116980 A2 WO 2006116980A2 DE 2006000753 W DE2006000753 W DE 2006000753W WO 2006116980 A2 WO2006116980 A2 WO 2006116980A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holder according
- coil holder
- holders
- receiving coil
- coil
- Prior art date
Links
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
- G01R33/34—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]
- G01R33/48—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
Definitions
- the invention relates to a receiving coil holder for an MR imaging system according to the preamble of patent claim 1.
- receive coils designed as surface coils have much smaller geometry than those which are whole body coils designed as receive coils.
- the invention has for its object to provide a holder for at least two spaced-apart, phased, in the parallel imaging method (parallel imaging) working multi-element surface receiving coils, which allows optimization of the parallel imaging method (parallel imaging).
- the advantages of the invention are in particular that the arranged in two spatially separated, preferably in the same housings, in the parallel imaging method (so-called. "Parallel Imaging") working multi-element surface receiving coils individually, jointly, or synchronously, directly or indirectly
- the two multi-element surface receiving coils can be aligned with one another (moved towards one another) in such a way that the two receiving surfaces (field-of- View) of the two multi-element surface receiving coils mutually with their maximum shadow, for example, as measured by irradiation by means of polarized light overlap Adjustment can, with the appropriate equipment, be maintained even if both multi-element surface receiving coils are moved synchronously in the same direction in space.
- the multi-element surface receiving coils can be advantageously accommodated in plastic housings which are attached to individual plastic supports.
- the overall brackets 6 and the individual brackets 24, 26, 22, 19, 23, 27 and 37, 34, 31, 36, 38, 39 can be designed in a variety of ways. You can e.g. straight or curved leaf springs or e.g. also be flexible flexible arms made of MR-compatible material.
- Such shaped brackets allow the housings with the multi-element surface receiving coils to be attached directly to the body parts to be examined, i. they are supported indirectly on the base plate.
- a fast manual, - e.g. for reproducing a previous position, adjustment of the multi-element surface receiving coils, or their housings, is e.g. achieved by attaching scales to the joint (s) with which the housings are respectively secured to an arm or single bracket 24, 26, 22, 19, 23, 27; 37, 34, 31, 36, 38, 39 are attached.
- the receiving coil total holder 6 By means of the receiving coil total holder 6 according to the invention or individual holders 24, 26, 22, 19, 23 27; 37, 34, 31, 36, 38, 39 and their arrangement on / in a patient support, the number of necessary different configurations of surface coils for various examinations can be significantly reduced. It can be as difficult parts of the body, such as parts of the head, shoulder, neck, prostate, body joints are examined using the receiving coil mounts according to the invention.
- the phased array multi-receive coil can be placed each very close to the body of the examiner, for example, without having to touch the body. Also, the housings with the multi-element surface receiving coils can be easily replaced.
- the receiver coil total holder according to the invention and / or the individual holders can be set up so that they allow only movements which make sense in accordance with the actual magnet main field direction of the gradient coil arrangement, horizontal or vertical main magnetic field MH.
- the receiving coil holders are intended for a horizontally oriented magnetic main field direction MH of an MR tomograph.
- FIG. 1 shows a receiving coil overall holder with two individual holders for an MR imaging system with two housings with multi-element surface receiving coils, which are aligned in the main magnetic field direction MH of the main magnetic field device of an MR tomograph, wherein the receiver coil overall holder rotated by 90 ° about its horizontal longitudinal axis,
- FIG. 2 shows the receiver coil overall holder for an MR imaging system according to FIG. 1, with a base plate which can be introduced into the interior of the MR tomograph along the main magnetic field direction MH and to which the receiver coil holders are fastened.
- All parts of the receiving coil mounts, housing and base are made of MR compatible material.
- a plurality of fastening means 3 for the feet 4 of a receiving coil-total holder 6 is provided on a base plate 1 .
- These fasteners 3 may be e.g. be designed as Gleitfeder- connections.
- a plurality of identical vertical holes 7, each with a vertical spring groove 8 in the base plate 1 are provided.
- the foot 4 has, for example, at its lower part 11, a cylindrical pin 12 whose diameter is matched to the bore 7 on sliding seat.
- the cylinder pin 12 has a matched to the spring groove 8 of the bore 7 flat spring 13.
- the diameter of the foot 4 is greater than the diameter of the holes 7.
- the inserted into holes 7 foot 4 is arranged rotationally.
- the majority of holes 7 in the base plate 1 serves to provide choices through the holes 7, which serve as "support points" 7 as close as possible to examine part of the body to the two multi-element surface receiving coils, left 14 right 16, with their respective To bring housings 17, 18 at an adjustable distance to be examined part of the body.
- the left housing 17 is positively connected by means of a left joint 21.
- the joint 21 may be a joint with two degrees of freedom or three degrees of freedom. So it can be e.g. a lockable universal joint or a lockable ball joint.
- the left hinge 21 serves to fix the left housing 17 and thus the inside thereof, e.g. first phased 4-element coil array approximates an RF 8-channel surface coil as closely as possible to the contour of a first side of the body part to be examined.
- the left arm 19 is e.g. as a one-armed angle lever with a first leg 22 and with one, with him, e.g. cohesively connected second leg 23 executed.
- the angle a which the two legs 22 and 23 can enclose may range from acute to obtuse, e.g. 120 °.
- the end 24 of the left arm 19 coincides with the beginning 26 of the first leg 22.
- the beginning 27 of the left arm 19 coincides with the beginning 28 of the second leg 23.
- the beginning 27 of the left arm 19 has a bearing bore and is on a short horizontal distance, e.g. 25mm, designed as cross-section reduced tongue with a bearing bore.
- a distance a from e.g. 60mm from the center of the bearing bore is with an outer surface 28 of the second leg 23 is a left web 29 having a left hand threaded hole, e.g. cohesively connected.
- the parts 24, 26, 22, 19, 23, 27 form a left individual mount for the left housing 17.
- the joint 32 may be a joint with two degrees of freedom or three degrees of freedom. It may for example be a lockable universal joint or a lockable ball joint.
- the hinge 32 serves as the right housing 18 and thus the disposed within it eg second phased 4-element coil array of RF 8-channel surface coil as well as possible to the contour of the other side of the part to be examined of the body is approximated.
- the right arm 31 is embodied, for example, as a one-armed angle lever with a first right leg 34 and with a second right leg 36 connected to it in a materially bonded manner, for example.
- the angle a, which may include the two legs 34 and 36 are in the range of acute to obtuse, eg 120 °.
- the end 37 of the right arm 31 coincides with the beginning 37 of the first right leg 34.
- the beginning 38 of the right arm 31 coincides with the beginning 39 of the second, right leg 36.
- the beginning 38 of the right arm 31 points on a short horizontal distance, e.g. 25mm, two spaced, horizontal provided with a bearing bore webs.
- a short horizontal distance e.g. 25mm
- an outer surface 41 of the second leg 36 is a right web 40 having a right-hand threaded bore, e.g. cohesively connected.
- the parts 37, 34, 31, 36, 36, 39 form a right-hand individual holder for the right-hand housing 18.
- Cotter pin 42 (pivot center) of a fork joint 43 pivotally mounted with the degree of freedom f 1.
- the beginning 27 of the left arm 19 comes to lie in the form of a tongue between the two spaced, horizontal, each with a bearing hole provided webs of the beginning 38 of the right arm 31. All three bearing bores are threaded together on the cotter pin of the rotary joint 43.
- a manual or motor drive 44 is provided.
- it In its simplest form, it consists of a threaded spindle mounted and hardened in the interior of the joint 43. It has a left threaded piece and a right threaded piece. For example, at the outer end of the left threaded piece drives a drive.
- the outer left thread of the left threaded piece of the threaded spindle is connected to a
- Ball joint is e.g. attached to the end of a left carriage, which is movable in a longitudinally oriented guide in the left web 29. During a rotation of the
- Threaded spindle 29 is generated via the left web 29 a pivoting movement of the left arm.
- the right-hand thread of the right-hand threaded part of the threaded spindle engages with an inside-right thread through a ball of a right-hand ball joint.
- the ball joint is fastened, for example, at the end of a right carriage, which is movable in a longitudinally aligned guide in the right web 29.
- a pivoting movement of the right arm 31 is effected via the right web 40.
- the distance of the first second phased 4-element coil array of an RF 8-channel surface coil to the second phased 4-element coil array of an RF 8-channel Surface coil to be changed accordingly. This happens e.g. by over a rotation of the threaded spindle.
- the two arms 19 and 31 about their common axis of rotation 42 synchronously to each other - or moved away from each other.
- the arms 19, 31 are followed by the housings 17 and 18 fixed to them with their first and second phased 4-element coil arrays of an RF 8-channel surface coil. Roughly a parallel image is preserved.
- the fine adjustment is done via adjustment of the housing 17 and 18th
- the receiving coil mounts for an MR imaging system are configured to operate two multi-element phased array (coil) arrays of an RF multichannel surface receive coil.
- Each of the two multi-element phased array (coil) arrays each has a receiving surface, each with a center, each having a longitudinal axis k1, k2 traversing it.
- Both multi-element (coil) arrays (14; 16) are each arranged on a movable arm 19, 31 or a single holder, for example, about a common pivot axis pivotable arm 19, 31.
- the distance b of the left plane and the distance b of the right plane from the first plane is changeable, but both distances are always equal or approximately equal to each other, if a common, ie a synchronous movement of the left single holder 24, 26, 22, 19, 23 27 and the right single holder 37, 34, 31, 36, 38, 39 with their housings 17,14 and 18,16.
- a first end 52 of a rod 53 is mounted on a bolt 51 and pivotable about its axis of rotation and fixable.
- the axis of rotation of the bolt 51 is always aligned transversely (90 °) to the main magnetic field direction MH.
- a second end 57 of the rod 53 is mounted pivotably and fixably on a bolt 56 and its axis of rotation.
- the axis of rotation of the bolt 56 is always aligned transversely (90 °) to the main magnetic field direction MH.
- the base plate 1 are also other technical means that are bendable in one direction, rotationally fixed and in each bending position detectable, applicable, eg flexible arms.
- a change in location of the receiver coil-total holder 6 or the individual holders, if desired, along the upper surface 2 of the base plate 1 is possible not only by means of fitting holes 7.
- This type of change of location of the receiver coil-total holder 6 and the individual holders 24, 26, 22, 19, 23 27 and 37, 34, 31, 36, 38, 39 is only a simple embodiment with eg a guide.
- a guide for example, in or on the base plate 1 in-parallel or transverse to the main magnetic field direction MH to the upper surface 2 open towards sliding straight-line guides, eg be provided dovetailed guide grooves. In the guide grooves (firmer
- the sliders could e.g. using MR-compatible gearboxes and motors (hydraulic motors),
- Servo cylinder, etc. optionally moved and / or fixed.
- the overall holder 6 can also be attached to other location than on the base plate 1.
- MR device For example, be attached directly or indirectly to the MR device.
- phased array multi-element (coil) arrays each have a receiving surface, each with a center, each having a longitudinal axis k1, k2 traversing it.
- the housings 18, 17 with the multi-element phased array (spool) array may be provided at the ends 24, 37 of the individual holders 24, 26, 22, 19, 23, 27 and 37, 34, respectively, by means of a joint 21, 32, respectively , 31, 36, 38, 39 each one the housing 17 or 18) are attached.
- the beginnings 27 and 39 of the individual holders 24, 26, 22, 19, 23, 27 and 37, 34, 31, 36, 38, 39 may be positively or materially connected.
- the base plate 1 has a number of fastening devices 7 for the individual holders 24, 26, 22, 19, 23, 27 and 37, 34, 31, 36, 38, 39, respectively.
- fastening means 7 a number of straight guides and / or sliding spring connections can be provided.
- the fixed part of the straight guides and / or Gleitfeder- connection is in- and / or transversely or laterally aligned parallel to the intended operating main magnetic field direction (MH) of the main magnetic field of the intended MR tomograph.
- MH main magnetic field direction
- the beginnings 27,39 of the two individual brackets 24, 26, 22, 19, 23 27; 37, 34, 31, 36, 38, 39 can directly or indirectly with one or with a single common, movable part of the straight guide, eg the profile of the fixed guide adapted movable sliders or Gleitfeder- connections are connected. Ie the moving parts of the guide and
- Gleitfeder- connection and the fixed part of the guide are positively connected by means of sliding seat.
- Bearings 43, 46 attached.
- the movable part 43 of the bearing 43, 46 is on a load-bearing
- Part 46 of the bearing 43, 46 rotatably mounted.
- the supporting part 46 is supported directly or indirectly on the base plate 1. Also, its vertical distance from the
- Base plate 1 adjustable.
- the distance between the housings 18, 17 is opposite one another, transversely to the intended operating
- Main magnetic field direction (MH), e.g. by moving the sliders (feet) with the form-fitting or cohesively connected individual holders.
- the location of the housings 18, 17 with their multi-element (coil) array 14; 16 is seen in and opposite to the intended operating main magnetic field direction (MH), adjustable.
- MH main magnetic field direction
- the beginnings 27, 39 of the two single holders 24, 26, 22, 19, 23 27; 37, 34, 31, 36, 38, 39 are connected for example by means of a joint 42,43.
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06722830A EP1883832B1 (de) | 2005-05-05 | 2006-04-28 | Empfangsspulen-halterung für ein mr-bildgebungssystem |
AT06722830T ATE434193T1 (de) | 2005-05-05 | 2006-04-28 | Empfangsspulen-halterung für ein mr- bildgebungssystem |
DE112006001758T DE112006001758A5 (de) | 2005-05-05 | 2006-04-28 | Empfangsspulen-Halterung für ein MR-Bildgebungssystem |
US11/919,545 US7970453B2 (en) | 2005-05-05 | 2006-04-28 | Reception coil maintaining element for an MR-imaging system |
DE502006004007T DE502006004007D1 (de) | 2005-05-05 | 2006-04-28 | Empfangsspulen-halterung für ein mr-bildgebungssystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005021621.8 | 2005-05-05 | ||
DE102005021621A DE102005021621A1 (de) | 2005-05-05 | 2005-05-05 | Empfangsspulen-Halterung für ein MR-Bildgebungssystem |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006116980A2 true WO2006116980A2 (de) | 2006-11-09 |
WO2006116980A3 WO2006116980A3 (de) | 2007-03-22 |
Family
ID=36954704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/000753 WO2006116980A2 (de) | 2005-05-05 | 2006-04-28 | Empfangsspulen-halterung für ein mr-bildgebungssystem |
Country Status (6)
Country | Link |
---|---|
US (1) | US7970453B2 (de) |
EP (1) | EP1883832B1 (de) |
AT (1) | ATE434193T1 (de) |
DE (3) | DE102005021621A1 (de) |
ES (1) | ES2329075T3 (de) |
WO (1) | WO2006116980A2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009027119B4 (de) * | 2009-06-23 | 2013-01-17 | Sirona Dental Systems Gmbh | Magnetfeldeinheit eines MRT-Systems zur bildgebenden Erfassung eines Kopfbereichs |
US9645207B2 (en) * | 2011-09-28 | 2017-05-09 | General Electric Company | Adjustable MRI head coil apparatus and MRI system |
US20130131498A1 (en) * | 2011-09-28 | 2013-05-23 | General Electric Company | Adjustable mri head coil apparatus and mri system |
DE102012201944A1 (de) * | 2012-02-09 | 2013-08-14 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Lokalspulensystem |
CN103876741A (zh) * | 2012-12-19 | 2014-06-25 | 通用电气公司 | 可调mri头部线圈装置以及mri系统 |
KR101600883B1 (ko) * | 2013-12-12 | 2016-03-10 | 삼성전자주식회사 | Rf 코일 및 이를 포함하는 자기공명영상장치 |
CN106019187B (zh) * | 2016-07-25 | 2018-09-14 | 江阴万康医疗科技有限公司 | 磁共振颈动脉斑块射频成像线圈 |
CN114284025B (zh) * | 2021-12-24 | 2024-04-16 | 深圳市联影高端医疗装备创新研究院 | 一种线圈装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0318257A2 (de) * | 1987-11-25 | 1989-05-31 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Spulenanordnungen für einen magnetischen Resonanzapparat |
JPH03272739A (ja) * | 1990-03-20 | 1991-12-04 | Toshiba Corp | 磁気共鳴イメージング装置 |
JP2001095776A (ja) * | 1999-10-01 | 2001-04-10 | Toshiba Medical System Co Ltd | Mrイメージング用rfコイル装置 |
US6650926B1 (en) * | 2001-03-30 | 2003-11-18 | Usa Instruments, Inc. | Flexible multi-section MRI radio frequency array coil |
DE102004052943A1 (de) * | 2003-11-04 | 2005-06-23 | General Electric Co. | Integrierte Zervikal-Thorakal-Lumbar-Wirbelsäulen-MRI-Array-Spule |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63309248A (ja) | 1987-06-11 | 1988-12-16 | Toshiba Corp | Mri用表面コイル装置 |
US5085219A (en) * | 1987-10-30 | 1992-02-04 | The Regents Of The University Of California | Adjustable holders for magnetic reasonance imaging rf surface coil |
-
2005
- 2005-05-05 DE DE102005021621A patent/DE102005021621A1/de not_active Withdrawn
-
2006
- 2006-04-28 DE DE502006004007T patent/DE502006004007D1/de active Active
- 2006-04-28 WO PCT/DE2006/000753 patent/WO2006116980A2/de active Application Filing
- 2006-04-28 AT AT06722830T patent/ATE434193T1/de active
- 2006-04-28 US US11/919,545 patent/US7970453B2/en not_active Expired - Fee Related
- 2006-04-28 ES ES06722830T patent/ES2329075T3/es active Active
- 2006-04-28 DE DE112006001758T patent/DE112006001758A5/de not_active Withdrawn
- 2006-04-28 EP EP06722830A patent/EP1883832B1/de not_active Not-in-force
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0318257A2 (de) * | 1987-11-25 | 1989-05-31 | THE GENERAL ELECTRIC COMPANY, p.l.c. | Spulenanordnungen für einen magnetischen Resonanzapparat |
JPH03272739A (ja) * | 1990-03-20 | 1991-12-04 | Toshiba Corp | 磁気共鳴イメージング装置 |
JP2001095776A (ja) * | 1999-10-01 | 2001-04-10 | Toshiba Medical System Co Ltd | Mrイメージング用rfコイル装置 |
US6650926B1 (en) * | 2001-03-30 | 2003-11-18 | Usa Instruments, Inc. | Flexible multi-section MRI radio frequency array coil |
DE102004052943A1 (de) * | 2003-11-04 | 2005-06-23 | General Electric Co. | Integrierte Zervikal-Thorakal-Lumbar-Wirbelsäulen-MRI-Array-Spule |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN Bd. 016, Nr. 086 (C-0916), 3. März 1992 (1992-03-03) & JP 03 272739 A (TOSHIBA CORP), 4. Dezember 1991 (1991-12-04) * |
PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 21, 3. August 2001 (2001-08-03) & JP 2001 095776 A (TOSHIBA CORP), 10. April 2001 (2001-04-10) * |
Also Published As
Publication number | Publication date |
---|---|
WO2006116980A3 (de) | 2007-03-22 |
ATE434193T1 (de) | 2009-07-15 |
US20090203990A1 (en) | 2009-08-13 |
DE112006001758A5 (de) | 2008-04-10 |
US7970453B2 (en) | 2011-06-28 |
EP1883832A2 (de) | 2008-02-06 |
DE102005021621A1 (de) | 2006-11-16 |
ES2329075T3 (es) | 2009-11-20 |
DE502006004007D1 (de) | 2009-07-30 |
EP1883832B1 (de) | 2009-06-17 |
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