Title :
Magneto-optical detection of weak magnetic fields
Author :
Talmadge, J.M. ; Gao, J. ; Eden, J.G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
Imaging modalities currently available for inexpensive imaging of biomagnetic fields are limited. Magneto-optical films have been used in magnetic field imaging systems with detection floors of 0.1-1 mT. A technique for magneto-optical detection of weak magnetic fields using bismuth-doped yttrium iron garnet (Bi:YIG) thin films is described. Results showing typical detected fields of 10 nT are presented. Such a device has potential clinical applications in MCG imaging and the tracking of magnetic particles.
Keywords :
biomedical imaging; bismuth; magnetic field effects; magneto-optical effects; magnetocardiography; medical signal detection; thin film devices; yttrium compounds; 0.1 to 1 mT; 10 nT; MCG imaging; YFe5O12:Bi; YIG:Bi; biomagnetic fields; bismuth-doped yttrium iron garnet thin films; imaging modality; magnetic particle tracking; magneto-optical detection; magneto-optical films; weak magnetic fields; Garnet films; High-resolution imaging; Magnetic fields; Magnetic films; Magnetic materials; Magnetooptic devices; Magnetooptic effects; Optical films; Optical imaging; Ultrasonic imaging;
Conference_Titel :
Biomedical Imaging: Nano to Macro, 2004. IEEE International Symposium on
Print_ISBN :
0-7803-8388-5
DOI :
10.1109/ISBI.2004.1398838
