초록 ▼

The invention relates to an MR method and an MR device for determining the position of at least one microcoil (11, 12) which is provided in or on an object (1) to be examined which is situated in an examination zone. During the acquisition of microcoil MR signals (S), at least one variable magnetic

The invention relates to an MR method and an MR device for determining the position of at least one microcoil (11, 12) which is provided in or on an object (1) to be examined which is situated in an examination zone. During the acquisition of microcoil MR signals (S), at least one variable magnetic gradient field acts on the examination zone, so that the k space is scanned at scanning points (k.sub.x (t.sub.i), k.sub.y (t.sub.i)). The position (x, y) of the microcoil (11, 12) is determined from at least three scanning values (S(t.sub.i)) of a microcoil MR signal and the associated scanning points (k.sub.x (T.sub.i), k.sub.y (t.sub.i)) for example by solving a system of equations formed from these values. The MR method can be used for various scanning modes of the k space, and the acquisition of the microcoil MR signals (S) does not require any MR sequences other than the MR sequences required for determining the nuclear magnetization distribution in the examination zone.

대표청구항 ▼

[ What is claimed is:] [1.] A magnetic resonance (MR) method for determining the position of at least one microcoil which is provided in or on an object to be examined which is situated in an examination zone, the method comprising:scanning k-space at known scanning points in k-space by generating a

[ What is claimed is:] [1.] A magnetic resonance (MR) method for determining the position of at least one microcoil which is provided in or on an object to be examined which is situated in an examination zone, the method comprising:scanning k-space at known scanning points in k-space by generating at least one variable magnetic gradient field acting on the examination zone,measuring values of microcoil MR signals at at least three of the known scanning points in k-space, anddetermining position values of the microcoil directly and without Fourier transformation from at least three measured values of the microcoil MR signal and from the k-values of the associated known scanning points in k-space.