Apparatus for generating radiation application synchronizing signal
AssigneeAnzai Medical Kabushiki Kaisha
InventorsTakeshi Sasaki, Hidenori Tashiro, Yosuke Tamuro
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Abstract
The level of a respiration signal obtained from a laser sensor or the like is indicated on a respiration monitor according to an output condition set by synchronizing signal output control device. While the level of the respiration signal is indicated on the respiration monitor, a synchronizing signal output device outputs a synchronizing signal according to the output condition and the respiration signal to an X-ray control device, which controls a high-voltage generating device to energize an X-ray source to apply X-rays to an examinee.
Claims14
An apparatus for generating a synchronizing signal for applying radiation to a respiratory moving object, comprising:
- a moving state detector for detecting a respiration-induced moving state of the respiratory moving object and outputting a moving state signal representing the detected respiration-induced moving state;
- an output condition setting unit for setting an output condition for the synchronizing signal with respect to said moving state signal outputted from said moving state detector;
- a moving state signal determining unit for determining whether said moving state signal outputted from said moving state detector is in a predetermined relationship to said output condition or not;
- and
- a synchronizing signal generator for generating said synchronizing signal based on a result from said moving state signal determining unit,
- wherein said output condition setting unit enables said output condition for said synchronizing signal to be selectively set at one of a plurality of predefined output conditions, all of said predefined output conditions being made available for selection by said output condition setting unit,
- wherein, in at least one of said plurality of predefined output conditions, said synchronizing signal is generated and radiation is applied during continuous respiration and movement of said respiratory moving object, and
- wherein said plurality of output conditions include all of:
- an output condition for outputting said synchronizing signal for a predetermined number of seconds (ts), after a predetermined number of seconds (tc) has elapsed from a peak amplitude (max) of the respiration signal;
- an output condition for outputting said synchronizing signal for a predetermined number of seconds (ts), after a predetermined number of seconds (tc) has elapsed from an arbitrary amplitude (a) in the respiratory cycle;
- an output condition for outputting said synchronizing signal between two arbitrary amplitudes (a1, b1) in the respiratory cycle;
- an output condition for outputting said synchronizing signal for a predetermined number of seconds (ts) after a forced stop in respiration at an arbitrary amplitude (a2);
- and
- an output condition for outputting said synchronizing signal for a predetermined number of seconds (ts) after each of a plurality of arbitrary amplitudes (a3, a4, a5) in the respiratory cycle.
An apparatus for generating a synchronizing signal for applying radiation to a respiratory moving object, comprising:
- a moving state detector for detecting a respiration-induced moving state of the respiratory moving object and outputting a moving state signal representing the detected respiration-induced moving state;
- an output condition setting unit for setting an output condition for the synchronizing signal with respect to said moving state signal outputted from said moving state detector;
- a moving state signal determining unit for determining whether said moving state signal outputted from said moving state detector is in a predetermined relationship to said output condition or not;
- and
- a synchronizing signal generator for generating said synchronizing signal based on a result from said moving state signal determining unit,
- wherein a plurality of said moving state detectors are connectably provided, said plurality of said moving state detectors including all of a laser sensor for detecting a distance up to said respiratory moving object, a load cell for detecting a pressure on a predetermined region of said respiratory moving object, and a flow rate sensor for detecting an air flow rate depending on the respiration of said respiratory moving object, said apparatus further comprising:
- a detector selector for selecting one of said plurality of moving state detectors according to a preset priority order.
Dependencies are inferred from the claim text.