Magnetic structure for generating magnetic fields to be used in nuclear magnetic resonance image detection, and machine for detecting said images
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0062777
(1998-04-20)
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| 우선권정보 |
IT-0000024 (1997-04-29) |
|
발명자
/ 주소 |
- Carrozzi Alessandro,ITX
- Trequattrini Alessandro,ITX
- Coscia Gianluca,ITX
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
Burns, Doane, Swecker & Mathis LLP
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| 인용정보 |
피인용 횟수 :
10 인용 특허 :
3 |
초록
▼
A magnetic structure for generating magnetic fields to be used in nuclear magnetic resonance image detection, having means (1, 101, 201, 301, 101', 201', 101", 201", 3, 3') for generating a magnetic field with the characteristics required to obtain valid images inside a predetermined tridimensional
A magnetic structure for generating magnetic fields to be used in nuclear magnetic resonance image detection, having means (1, 101, 201, 301, 101', 201', 101", 201", 3, 3') for generating a magnetic field with the characteristics required to obtain valid images inside a predetermined tridimensional area (102), being at least a part of a cavity (2), which is at least partially contained in the magnetic structure. According to the invention, the means for generating the magnetic field consist of at least one coil (3, 3'), of the resistive or superconductive type. The coil (3, 3') is associated to an element (1) made of a highly permeable material, the so-called yoke, which defines a cavity (2), having at least one open side, whereas one or more inner pole pieces (101, 201, 301; 101', 202'; 101", 201") branch out of the inner side facing the cavity (2) of the yoke (1), at least in the area (102) which is meant to receive the body or the part thereof to be scanned, and terminate with a free end inside the cavity (2), around which pole piece or pole pieces, the coil or coils (3, 3') for generating the magnetic flow are arranged.
대표청구항
▼
[ What is claimed is:] [1.] A magnetic structure for generating magnetic fields to be used in nuclear magnetic resonance image detection, comprising:a yoke made of a material provided with a high permeability to magnetic flow and which yoke includes a cavity;means for generating a magnetic field wit
[ What is claimed is:] [1.] A magnetic structure for generating magnetic fields to be used in nuclear magnetic resonance image detection, comprising:a yoke made of a material provided with a high permeability to magnetic flow and which yoke includes a cavity;means for generating a magnetic field with characteristics required to obtain valid images inside a predetermined tridimensional area, being in at least a part of the cavity;the means for generating the magnetic field includes at least one coil of the resistive or superconductive type;the cavity having at least one open sides;at least two pairs of opposite inner pole pieces branch out of an inner side facing the cavity of said yoke at least in an area corresponding to a volume which is meant to receive a body or a part thereof to be scanned, and terminate with a free end inside the cavity;a coil for generating the magnetic field is arranged around each of the opposite inner pole pieces of said two pairs.
이 특허에 인용된 특허 (3)
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Pulyer Yuly M. (350 Revere Beach Blvd. Revere MA 02151), MRI system having high field strength open access magnet.
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Edwards Donald (Wilmington DE) Tietz Raymond (Wilmington DE) Kountz Dennis J. (Wilmington DE) Cohen Jeffrey D. (Wilmington DE) Hsu Che-Hsiung (Wilmington DE) Armstrong Alan G. A. M. (Oxon GB2) McDoug, Magnetic field generating assembly and method.
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Chari Madabushi V. (Burnt Hills NY) Laskaris Evangelos T. (Schenectady NY) Bedrosian Gary (Slingerlands NY) Ogle Michele D. (Burnt Hills NY), Open (non-enclosed) magnets for magnetic resonance imaging.
이 특허를 인용한 특허 (10)
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Pulyer, Yuly M., Ferrorefraction MRI system having two orthogonal remote field polarization axes.
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Besio, Stefano; Badino, Felice; Carlini, Davide; Pittaluga, Stefano; Punzo, Vincenzo; Trequattrini, Alessandro, Magnetic resonance imaging apparatus with means for correcting magnetic field homogeneity.
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Takekoshi Isamu,JPX ; Saegusa Masahito,JPX ; Ohnuma Mitsuru,JPX ; Ninomiya Atsushi,JPX ; Katayama Atsushi,JPX ; Sato Shigeru,JPX ; Maeda Tsuneo,JPX, Magnetic resonance imaging system.
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Laskaris,Evangelos Trifon; Li,Liang; Amm,Kathleen Melanie; Shei,Juliana Chiang; Aksel,Bulent; Benz,Mark Gilbert; Kliman,Gerald Burt; Thompson,Paul Shadworth; Jacobs,Israel Samson; Patchen,Harold Jay, Method and apparatus for magnetizing a permanent magnet.
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Tran, Lung T., Method and system for performing equipotential sensing across a memory array to eliminate leakage currents.
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Amm,Kathleen Melanie; Laskaris,Evangelos Trifon; Thompson,Paul Shadforth; Aksel,Bulent; Amm,Bruce Campbell; Palmo, Jr,Michael Anthony; Van Oort,Johannes Martinus; Huang,Xianrui, Multiple ring polefaceless permanent magnet and method of making.
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Huang, Xianrui; Palmo, Jr., Michael Anthony; Laskaris, Evangelos Trifon; Amm, Bruce Campbell, Open magnet with recessed field shaping coils.
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Laskaris,Evangelos Trifon; Palmo,Michael Anthony; Amm,Kathleen Melanie; Thompson,Paul Shadforth, Permanent magnet assembly and method of making thereof.
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Laskaris,Evangelos Trifon; Palmo,Michael Anthony; Amm,Kathleen Melanie; Thompson,Paul Shadforth, Permanent magnet assembly and method of making thereof.
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Huang,Xianrui; Laskaris,Evangelos Trifon; Amm,Kathleen Melanie; Amm,Bruce Campbell; Palmo, Jr.,Michael Anthony, Permanent magnet assembly with movable permanent body for main magnetic field adjustable.
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