WO2007041876A3 - Method for shielding at least one device working with a magnetic and/or electrical field and shielding for carrying out said method - Google Patents

Method for shielding at least one device working with a magnetic and/or electrical field and shielding for carrying out said method Download PDF

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Publication number
WO2007041876A3
WO2007041876A3 PCT/CH2006/000512 CH2006000512W WO2007041876A3 WO 2007041876 A3 WO2007041876 A3 WO 2007041876A3 CH 2006000512 W CH2006000512 W CH 2006000512W WO 2007041876 A3 WO2007041876 A3 WO 2007041876A3
Authority
WO
WIPO (PCT)
Prior art keywords
shielding
magnetic
carrying
improved
electrical field
Prior art date
Application number
PCT/CH2006/000512
Other languages
German (de)
French (fr)
Other versions
WO2007041876A2 (en
Inventor
Christian Fischbacher
Original Assignee
Cfw Emv Consulting Ag
Christian Fischbacher
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 Cfw Emv Consulting Ag, Christian Fischbacher filed Critical Cfw Emv Consulting Ag
Publication of WO2007041876A2 publication Critical patent/WO2007041876A2/en
Publication of WO2007041876A3 publication Critical patent/WO2007041876A3/en

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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
    • G01R33/42—Screening
    • G01R33/422—Screening of the radio frequency field
    • 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
    • G01R33/42—Screening
    • G01R33/421—Screening of main or gradient magnetic field

Abstract

The shielding (3) comprises at least two envelopes (4, 5). An inner envelope (4) arranged closer to the device (2) for shielding to shield the emission (A) from f = 0 Hz of the device (2) and a second outer envelope (5), for shielding the device (2) from the irradiation (B) from f = < 10 kHz from outside. Said envelopes (4, 5) are preferably arranged at a separation from each other such as to form a cavity (10), in which at least one coil (15 - 20) is arranged generating an electric and/or magnetic field for additional compensation for the incident radiation (B). A sensor (21) for determining the incident radiation (B) is arranged outside the shielding (3). The compensating field generated by the coil or coils can be controlled by means of the above. The function of the device (2) can be improved as a result of said shielding (3). If said device (2) is a magnetic resonance tomograph an improved image quality is achieved and hence an improved diagnosis reliability and the location thereof can be freely selected.
PCT/CH2006/000512 2005-10-12 2006-09-21 Method for shielding at least one device working with a magnetic and/or electrical field and shielding for carrying out said method WO2007041876A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH16532005 2005-10-12
CH1653/05 2005-10-12

Publications (2)

Publication Number Publication Date
WO2007041876A2 WO2007041876A2 (en) 2007-04-19
WO2007041876A3 true WO2007041876A3 (en) 2007-07-12

Family

ID=37943155

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2006/000512 WO2007041876A2 (en) 2005-10-12 2006-09-21 Method for shielding at least one device working with a magnetic and/or electrical field and shielding for carrying out said method

Country Status (1)

Country Link
WO (1) WO2007041876A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467179A2 (en) * 1990-07-13 1992-01-22 Biomagnetic Technologies, Inc. Construction of shielded rooms using sealant that prevent electromagnetic and magnetic field leakage
DE4217302A1 (en) * 1991-06-05 1992-12-10 Siemens Ag Screened chamber with active screening for medical measuring appts. - measures magnetic field using induction coil around room and applies appropriate compensation current to coils to cancel LF interference field
WO2001045481A1 (en) * 1999-12-13 2001-06-21 Valtion Teknillinen Tutkimuskeskus Method for attenuating interference in a magnetically shielded room

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467179A2 (en) * 1990-07-13 1992-01-22 Biomagnetic Technologies, Inc. Construction of shielded rooms using sealant that prevent electromagnetic and magnetic field leakage
DE4217302A1 (en) * 1991-06-05 1992-12-10 Siemens Ag Screened chamber with active screening for medical measuring appts. - measures magnetic field using induction coil around room and applies appropriate compensation current to coils to cancel LF interference field
WO2001045481A1 (en) * 1999-12-13 2001-06-21 Valtion Teknillinen Tutkimuskeskus Method for attenuating interference in a magnetically shielded room

Also Published As

Publication number Publication date
WO2007041876A2 (en) 2007-04-19

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