CPC A61B 6/582 (2013.01) [A61B 6/032 (2013.01); H05G 1/265 (2013.01); H05G 1/34 (2013.01)] | 19 Claims |
1. A method for preheating a filament of an X-ray tube, comprising:
determining a value of tube voltage, a value of tube current, a start time for emission, and a start time for preheating;
determining, based on the start time for emission and the start time for preheating, a time length of preheating of the filament;
establishing a heating model, wherein the heating model includes a corresponding relationship of the value of the tube current, the time length of preheating of the filament, and a filament preheating current at a given tube voltage, and the heating model includes a time length of a first standard preheating and a time length of a second standard preheating;
determining a filament preheating plan according to the value of the tube voltage, the value of the tube current, the time length of preheating of the filament, and the heating model, wherein the determining the filament preheating plan according to the value of the tube voltage, the value of the tube current, the time length of preheating of the filament, and the heating model includes:
determining a filament preheating current of the filament preheating plan by comparing the time length of the preheating of the filament with the time length of the first standard preheating and the time length of the second standard preheating; and
performing, based on the filament preheating plan, a filament-preheating operation.
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