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JPS6425510A - Magnet device for mri - Google Patents

Magnet device for mri

Info

Publication number
JPS6425510A
JPS6425510A JP62183025A JP18302587A JPS6425510A JP S6425510 A JPS6425510 A JP S6425510A JP 62183025 A JP62183025 A JP 62183025A JP 18302587 A JP18302587 A JP 18302587A JP S6425510 A JPS6425510 A JP S6425510A
Authority
JP
Japan
Prior art keywords
magnetic field
line parts
coils
straight line
parts
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
Application number
JP62183025A
Other languages
Japanese (ja)
Other versions
JPH0519965B2 (en
Inventor
Tomohisa Maeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62183025A priority Critical patent/JPS6425510A/en
Priority to US07/184,506 priority patent/US4862086A/en
Priority to DE3814260A priority patent/DE3814260C2/en
Publication of JPS6425510A publication Critical patent/JPS6425510A/en
Publication of JPH0519965B2 publication Critical patent/JPH0519965B2/ja
Granted legal-status Critical Current

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  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

PURPOSE:To obtain an image characterized by excellent linearily and no distortion, by dividing a coil material into a plurality of planer parts on the facing surfaces of magnetic poles, forming coils in this way, setting the ampere turns of the divided coils at mutually related values, thereby making the gradient of the slanted magnetic field in each direction to approach a constant value. CONSTITUTION:In a slanted magnetic field in the direction Y, a slanted magnetic field generating part 40 is composed of coils 11a, 12a, 11b and 12b, which are divided into two parts in a concentric pattern. Ampere turns IN1 and IN2 of these coils 11a, 12a, 11b and 12b are set at the specified related values. In slanted magnetic fields in the direction X and in the direction Z, a slanted magnetic field generating part 40 is composed of first straight line parts 17 and 18, second straight line parts 19 and 20 and returning line parts 21 and 22, which are obtained by dividing parallel 4-line parts. Ampere turns IN1 and IN2 of these first straight line parts 17 and 18 and the second straight line parts 19 and 20 are set at specified related values. Thus the space uniformity of the gradient in each magnetic field can be enhanced. Therefore, the gradient becomes a very small value. The values become approximately equal for the directions. An image characterized by excellent linearily and less distortion is obtained.
JP62183025A 1987-04-28 1987-07-22 Magnet device for mri Granted JPS6425510A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP62183025A JPS6425510A (en) 1987-07-22 1987-07-22 Magnet device for mri
US07/184,506 US4862086A (en) 1987-04-28 1988-04-21 System for generating magnetic fields utilized for magnetic resonance imaging apparatus
DE3814260A DE3814260C2 (en) 1987-04-28 1988-04-27 Device for generating magnetic fields for a magnetic resonance imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62183025A JPS6425510A (en) 1987-07-22 1987-07-22 Magnet device for mri

Publications (2)

Publication Number Publication Date
JPS6425510A true JPS6425510A (en) 1989-01-27
JPH0519965B2 JPH0519965B2 (en) 1993-03-18

Family

ID=16128423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62183025A Granted JPS6425510A (en) 1987-04-28 1987-07-22 Magnet device for mri

Country Status (1)

Country Link
JP (1) JPS6425510A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6529003B2 (en) 1999-06-21 2003-03-04 Ge Yokogawa Medical Systems, Limited Gradient coil system for use in MRI apparatus with unique wiring arrangement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604204A (en) * 1983-06-22 1985-01-10 Mitsubishi Electric Corp Inclined magnetic field coil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604204A (en) * 1983-06-22 1985-01-10 Mitsubishi Electric Corp Inclined magnetic field coil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6529003B2 (en) 1999-06-21 2003-03-04 Ge Yokogawa Medical Systems, Limited Gradient coil system for use in MRI apparatus with unique wiring arrangement

Also Published As

Publication number Publication date
JPH0519965B2 (en) 1993-03-18

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