FIELD: medicine.
SUBSTANCE: group of inventions refers to medicine, namely to a device and a method for magnetic particle exposure and/or detection in a field of vision. For zooming-out and still accessing a patient while forming an image, the device comprises two or more transmission coil sets with neighbouring coil sets overlapped partially. The transmission coil set comprises: a pair of concentric selection field coils for generating a magnetic selection field having such space distribution of its magnetic intensity that the first subzone having low magnetic intensity and the second subzone having higher magnetic intensity are generated in the field of vision; and at least one pair of travelling field coils for repositioning spatially the two subzones in the field of vision by the travelling magnetic field in such a way as to change magnetic particle excitation locally. The above at least one pair of travelling field coils is parallel to the above pair of selection field coils and is formed by the two neighbouring turns.
EFFECT: zooming-out and still accessing the patient.
13 cl, 11 dwg
