| 摘要 |
PCT No. PCT/DE90/00457 Sec. 371 Date Dec. 26, 1991 Sec. 102(e) Date Dec. 26, 1991 PCT Filed Jun. 15, 1990 PCT Pub. No. WO91/00530 PCT Pub. Date Jan. 10, 1991.In order to simplify the process of plotting a pulse sequence controlling the course of an MR experiment, for example an NMR tomographic investigation, by which the excitation of an RF pulse bringing about transverse magnetization, the switching on and off of field gradients acting in different directions, superposed on a constant magnetic field, as well as the acquisition times, it is proposed to generate this pulse sequence by modification of standard pulse sequences and/or by composition from standard pulses. These pulses are offered on a picture screen (22) as simple symbols (42-49), icons, or brief designations for standard pulse sequences (36-41). By clicking-on of the offering fields, for example by means of a mouse (51), these elements can be copied on time axes (58) allocated to them and attached at the suitable release time point onto these axes. The pulse sequence thus determined is stored on-line. The input of parameters can occur by clicking-on of windows (57 and/or 61), into which the parameter values can be input. In an arrangement (10) suited for the execution of the process the icons (42-49) representing the standard pulses are arranged along an icon column (54) on the left image border of the picture screen (22), while standard pulse sequences (35-41) are recallable on a menu strip (56) along a "horizontal" border of the picture screen (22), represented by brief designations. |
