| Zugriffsnummer | 23572 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Non-contact detection of myocardium’s mechanical activity by ultra-wideband rf-radar and Interpretation applying electrocardiography |
| Autor(in); Institution |
Thiel, Florian; 8.1, Medizinische Messtechnik, PTB-Berlin
Kreiseler, Dieter; 8.4, Mathematische Modellierung und Datenanalyse, PTB-Berlin
Seifert, Frank; 8.1, Medizinische Messtechnik, PTB-Berlin
|
| Quelle/Jahr | Review of Scientific Instruments: 80 (2009), 11, 114302-1 - 114302-12 |
| ISSN | 0034-6748 (PRINT) ; 1089-7623 (ONLINE) |
| DOI | |
| URL | |
| Verlag | Melville, NY: AIP |
| Klassifikationscode | PACS: 87.19.Hh ; PACS: 87.19.rj ; PACS: 87.61.-c ; PACS: 87.50.-a |
| Freie Schlagworte | Ultra-wideband (UWB) radar ; cardiac contractility variability ; myocardial surface ; high and ultra-high field magnetic resonance imaging (MRI) ; multimodal sensing ; noise radar ; electrocardiograhy (ECG) |
| Zusammenfassung | Electromagnetic waves can propagate through the body and are reflected at interfaces between materials with different dielectric properties. Therefore the reason for using ultra-wideband (UWB) radar for probing the human body in the frequency range from 100 MHz up to 10 GHz is obvious and suggests an ability to monitor the motion of organs within the human body as well as obtaining images of internal structures. The specific advantages of UWB sensors are high temporal and spatial resolution, penetration into object, low integral power, and compatibility with established narrowband systems. The sensitivity to ultra-low power signals makes them suitable for human medical applications including mobile and continuous non-contact supervision of vital functions. Since no ionizing radiation is used, and due to the ultra-low specific absorption rate (SAR) applied, UWB techniques permit non-invasive sensing with no potential risks. This research aims at the synergetic use of UWB sounding combined with magnetic resonance imaging (MRI), to gain complementary information for improved functional diagnosis and imaging, especially to accelerate and enhance cardiac MR imaging by applying UWB radar as a non-contact navigator of myocardial contraction. To this end a sound understanding of how myocardial’s mechanic is rendered by reflected and post-processed ultra-wideband radar signals must be achieved. Therefore, we have executed the simultaneous acquisition and evaluation of radar signals with signals from a high-resolution electrocardiogram. The non-contact ultra-wideband illumination was done from several radiographic standard positions to monitor selected superficial myocardial areas during the cyclic physiological myocardial deformation in three different respiratory states. From our findings we could conclude, that UWB Radar can serve as a navigator technique for high and ultra-high field magnetic resonance imaging and can be beneficial preserving the high resolution capability of this imaging modality. Furthermore it can potentially be used to support standard ECG analysis by complementary information where sole ECG analysis fails, e.g. Electromechanical Dissociation. |
Zitierung
Thiel, F., Kreiseler, D., & Seifert, F. (2009). Non-contact detection of myocardium’s mechanical activity by ultra-wideband rf-radar and Interpretation applying electrocardiography. Review of Scientific Instruments, 80(11), 114302-1–114302-12. https://doi.org/10.1063/1.3238506