| 摘要 |
The invention relates to a device for MR imaging of a moving structure of a body (7) of a patient placed in an examination volume. The device (1) comprises means (2) for establishing a substantially homogeneous main magnetic field in the examination volume, means (3, 4, 5) for generating switched magnetic field gradients superimposed upon the main magnetic field, means (6) for radiating RF pulses towards the body (7), control means (12) for controlling the generation of the magnetic field gradients and the RF pulses, means (10) for receiving and sampling MR signals, and reconstruction means (14) for forming MR images from the signal samples. In accordance with the invention, the device (1) is arranged to a) acquire and sample MR signals from multiple image slices during a succession of motion cycles of the moving structure by subjecting at least a portion of the body (7) to at least one RF pulse and switched magnetic field gradients, b) reconstruct multiple MR slice images (a-p) from the signal samples, c) transform the set of MR slice images (a-p) into a three-dimensional image as a function of motion phase (Φ) of the moving structure by using image registration.
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