Apparatus for generating radiation application synchronizing signal
First Claim
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1. 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, andwherein 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.
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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.
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Citations
14 Claims
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1. An apparatus for generating a synchronizing signal for applying radiation to a respiratory moving object, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for generating a synchronizing signal for applying radiation to a respiratory moving object, comprising:
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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. - View Dependent Claims (14)
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Specification
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Current AssigneeAnzai Medical Kabushiki Kaisha
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Original AssigneeAnzai Medical Kabushiki Kaisha
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InventorsSasaki, Takeshi, Tamuro, Yosuke, Tashiro, Hidenori
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Primary Examiner(s)Casler; Brian L.
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Assistant Examiner(s)JASANI, ASHISH S
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Application NumberUS10/454,609Publication NumberTime in Patent Office1,531 DaysField of Search600407-428, 128/204.23US Class Current600/428CPC Class CodesA61B 5/113 occurring during breathingA61B 6/541 involving acquisition trigg...A61N 5/1049 for verifying the position ...A61N 5/1064 for adjusting radiation tre...A61N 5/1067 in real time, i.e. during t...
