| Zugriffsnummer | 23724 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Sprache | Englisch |
| Titel | SQUID system for MEG and low field MRI |
| Autor(in); Institution |
Burghoff, Martin; 8.2, Biosignale, PTB-Berlin
Hartwig, Stefan; 8.2, Biosignale, PTB-Berlin
Albrecht, Hans-Helge; 8.2, Biosignale, PTB-Berlin
Voigt, Jens; 8.2, Biosignale, PTB-Berlin
Hilschenz, Ingo; 8.2, Biosignale, PTB-Berlin
Scheer, Hans-Jürgen; 8.2, Biosignale, PTB-Berlin
Sander-Thömmes, Tilmann; 8.2, Biosignale, PTB-Berlin
Trahms, Lutz; 8.2, Biosignale, PTB-Berlin
|
| Quelle/Jahr | The Journal of Japan Biomagnetism and Bioelectromagnetics Society: 22 (2009), 1, 42 - 43 |
| ISSN | 0915-0374 |
| Konferenzangaben | 24th Annual Meeting of Japan Biomagnetism and Bioelectromagnetics Society (JBiomag 2009), Kanazawa City, 28-29, May, 2009, Japan |
| Freie Schlagworte | Magnetic resonance ; Low-field ; SQUID |
| Zusammenfassung | A SQUID magnetometer was used for measuring DC-magnetoencephalography (DC-MEG) followed by the recording of the free precession decay of protons (FPD) of the human brain. The SQUID system has a white noise level of about 4 fT/fiHz. The MR system has two magnetic fields: a static polarization field of some mT an a static detection field of 1µT. We measured the FPD of protons in distilled water with a spectral line width of about 156 mHz and in human brain with a line width of approximately 1.5 Hz. After a motor stimulation paradigm we could record a DC-MEG signal with an amplitude near 1 pT. The next step of the project is the simultaneous recording of both signals and the detection of changes in the FPD due to brain activity. |
