Radiation tomography system and tomography method
AssigneeGE Medical Systems Global Technology Company, LLC
InventorMasaru Seto
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Abstract
A radiation tomography system includes a radiation source and a radiation detector opposed to the radiation source with a subject between them. The radiation tomography system further includes a scanner that scans a subject by moving the radiation source and radiation detector while rotating them about the subject; a calculator that calculates a control value with which an exposure of a radiation emanating from the radiation source is controlled; and a display on which at least one of calculated control values associated with positions in the direction of rotation of the scanner and control values associated with positions in the direction of a body axis linking the subject's head and the subject's tiptoe is displayed in relation to the respective pieces of positional information on the subject.
Claims17
A radiation tomography system including a radiation source and a radiation detector opposed to said radiation source with a subject between them, comprising:
- a scanning device for scanning said subject by moving at least one of said radiation source and radiation detector while rotating it about said subject;
- a control value calculating device for calculating a control value with which an exposure of a radiation emanating from said radiation source is controlled;
- a display device for displaying at least one of control values, which are calculated in association with positions in the direction of rotation in which said scanning device is rotated, and control values, which are calculated in association with positions in the direction of a body axis linking said subject's head and said subject's tiptoe, in relation to the respective pieces of positional information on said subject;
- an adjusting device for adjusting said control values displayed on said display device;
- and
- a reduction ratio calculating device for comparing said control values displayed on said display device with succeedingly adjusted control values so as to calculate reduction ratios.
A tomography method for a radiation tomography system including a radiation source and a radiation detector opposed to said radiation source with a subject between them, said tomography method comprising the steps of:
- calculating a control value with which an exposure of a radiation emanating from said radiation source is controlled;
- displaying a change of calculated control values in association with pieces of positional information on said subject in at least one of the direction of rotation in which said radiation source and radiation detector are rotated or the direction of a body axis linking said subject's head and said subject's tiptoe;
- adjusting the calculated control values;
- comparing the calculated control values with succeedingly adjusted control values so as to calculate reduction ratios;
- and
- scanning said subject by moving at least one of said radiation source and radiation detector while rotating it about said subject.
Dependencies are inferred from the claim text.