Hardware Performance And Inverse Algorithm For Living Tissue Conductivity Tomography System Using Focused Magnetic Fields

Each existing medical imaging instrument has its disadvantages. For example, there are organic limitations of ultrasonography when scanning patient,and its scanning result is dependant on the physician. The resolution of nuclear imaging is lower than other imaging instruments and it must inject radiotoxic drugs into the body when examining. Magnetic resonance imaging can get functional image, but it is costly for working and examining.Electrical impedance tomography and magnetic induction tomography is now under investigating. They are all faced with the difficulty of extracting signal from strong noises. Both resolution of image and speed of imaging are very low in the two imaging technologies. Thus, both of them are not used for clinical diagnosis indeed.Biological tissue conductivity tomography using focused magnetic fields is a new technology of medical imaging proposed in this dissertation. It reconstructs the image of conductivity within biological tissue. This technology can get not only the anatomical image of biological tissue after a symptom formed, but also the functional image of biological tissue before a symptom formed. Because functional changes have occurred in the process of physiological and pathological changes...