Intracerebral current simulation method and device thereof, and transcranial magnetic stimulation system including intracerebral current simulation device

An intracerebral current simulation device comprising:

• a first means configured to provide head image data including at least a portion of a brain out of tomographic image data of a patient;
• a second means configured to form a three-dimensional brain model composed of respective minute polyhedral units acquired by dividing at least one region making up the brain of the head image data provided by the first means into minute elements;
• a third means configured to provide first information including, out of conditions when a coil is placed on the head of the patient to apply a current to the coil to provide a magnetic stimulation to the brain of the patient and a patient's reaction to the magnetic stimulation is observed, at least conditions of a position and a direction of the coil, a condition of the current applied to the coil, and a condition of structure related to a formed magnetic field of the coil;
• and a fourth means configured to calculate eddy currents or electric fields induced in the respective minute polyhedral units of the three-dimensional brain model based on the first information provided by the third means and second information including an electric conductivity assigned to each of the minute polyhedral units,
• wherein the three-dimensional brain model is a model comprising data of at least one of cerebrospinal fluid, grey matter, and white matter, except for skins and muscles.

An intracerebral current simulation device comprising:

• a first means for providing head image data including at least a portion of a brain out of tomographic image data of a patient;
• a second means for forming a three-dimensional brain model composed of respective minute polyhedral units acquired by dividing at least one region making up the brain of the head image data provided by the first means into minute elements;
• a third means for providing first information including, out of conditions when a coil is placed on the head of the patient to apply a current to the coil to provide a magnetic stimulation to the brain of the patient, at least conditions of a position and a direction of the coil, a condition of the current applied to the coil, and a condition of structure related to a formed magnetic field of the coil;
• and
• a fourth means for calculating eddy currents or electric fields induced in the respective minute polyhedral units of the three-dimensional brain model based on the first information provided by the third means and second information including an electric conductivity assigned to each of the minute polyhedral units,
• wherein the three-dimensional brain model is a model comprising data of at least one of cerebrospinal fluid, grey matter, and white matter, except for skins and muscles.