| 摘要 |
<p>Chemotherapy may be selectively localized to a tumor (zone 34, Fig. 4B) located at a point well within the human body (12-1) by physically associating the chemotherapy agent with magnetic material having a Curie point temperature slightly above the normal temperature of the human body. Both materials may be associated with protein microspheres such as human serum albumin. By applying a magnetic field (from magnets 14 and 16) to the tumor location and then applying electromagnetic radiation (from antenna arrays 22 of Fig. 1 or 36 of Fig. 4B) to heat the Curie point magnetic material (so that it loses its magnetic properties), away from the tumor site, but not at the tumor site, the unheated magnetic material and the physically associated chemotherapy agent will be localized at the tumor (34). Radioactive material may also be employed to facilitate imaging of the concentration of the microspheres and for radiation treatment.</p> |
