| 摘要 |
The invention relates to a method of MR imaging of an object positioned in an examination volume of a MR device (1). It is an object of the invention to enable ‘silent’ ZTE imaging with sampling of k-space center. According to the invention, the object (10) is subjected to an imaging sequence of RF pulses (20) and switched magnetic field gradients (G), wherein an initial RF pulse (20) is radiated before setting a readout magnetic field gradient (G). An initial MR signal is acquired with the readout magnetic field gradient(G) ramping up after a delay after the initial RF pulse (20). Thereafter, the magnetic field gradient (G) remains switched on and the readout direction is gradually varied. Further RF pulses(22) are radiated in the presence of the readout magnetic field gradient(G) and further MR signal are acquired like in conventional ZTE imaging. Finally, a MR image is reconstructed from the acquired MR signals. Moreover, the invention relates to a MR device and to a computer program for a MR device. |
