| 摘要 |
PROBLEM TO BE SOLVED: To enable to measure a difference of magnetic field changes in the depth direction so as to verify to what extent accurately to measure the generation source of a magnetic field and to enable to verify the special resolution ability. SOLUTION: This movable magnetic field type phantom head is equipped with a vessel 3 which can be filled with physiological saline and corresponding to a brain shape of a subject, a support tube 2 to support the vessel, a first glass tube 8 to which a first electrode 30 is mounted on one end and which is movably set in the vertical direction toward the center of the vessel, a first guiding and fixing means 10 to liquid-tightly guide the tube 8 and fixed it at a prescribed position, and a first scale tube 26 to measure a moved position of the first glass tube 8. Further, a second glass tube 15 to which a second electrode is mounted on one end and which is movable in the vertical direction apart a prescribed distance from the first glass tube 8 and is roatatably set, a second guiding and fixing means 20 to liquid-tightly guide the glass tube 15 and to fix it at a prescribed position, and a second scale tube 28 to measure the displacement and the rotation angle of the second glass tube 15 are also equipped. |
