| Zugriffsnummer | 39472 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Ultra-sensitive SQUID instrumentation for MEG and NCI by ULF MRI |
| Autor(in); Institution |
Körber, Rainer; 8.2, Biosignale, PTB-Berlin
|
| Quelle/Jahr | EMBEC & NBC 2017:(2017), 795 - 798 |
| Schriftenreihe | IFMBE Proceedings: 65 |
| Herausgeber(in) |
Eskola, H.
|
| ISSN | 1680-0737 ; 1727-1983 |
| ISBN | 978-981-10-5121-0 (print) ; 978-981-10-5122-7 (online) |
| DOI | |
| Verlag | Singapore: Springer |
| Konferenzangaben | EMBEC & NBC 2017, Joint Conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering and Medical Physics (NBC), Tampere, 11-15, June, 2017, Finland |
| Freie Schlagworte | SQUID ; ULF MR ; neuronal current imaging (NCI) ; ultra-low noise dewar |
| Zusammenfassung | The requirements for the construction of ultrasensitive SQUID instrumentation as used in biomagnetism are presented. Typically, SQUIDs are inductively coupled to Pick-up coils and for this arrangement one can improve the noise Performance by increasing the sensing coil area. To achieve Optimum sensitivity one has to consider the signal-to-noise ratio (SNR), which is an intricate interplay between source characteristics and noise origin. It turns out that separate pick-up coil designs are needed for various noise characteristics even for an identical source. Hence, a hybrid system with differently sized Pick-up coils presents the best option for multipurpose applications. A single channel system with close to SQUID intrinsic noise Level is also described. This is possible by utilizing a special dewar design and thereby enabling a further increase in SNR. Such a system might be used for current density imaging and neuronal current imaging by ultra-low-field magnetic resonance where it also must be able to be field-tolerant to up to 100-200 mT. |
Zitierung
Körber, R. (2017). Ultra-sensitive SQUID instrumentation for MEG and NCI by ULF MRI. EMBEC & NBC 2017, Joint Conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering and Medical Physics (NBC), Tampere, 11-15, June, 2017, Finland. https://doi.org/10.1007/978-981-10-5122-7_199