Motion monitor system for use with imaging systems
First Claim
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1. A motion detection system for monitoring a range of motion of a subject during a medical procedure, the combination comprising:
- a motion detector positioned to measure subject motion and produce an input signal;
a control unit connected to receive the input signal from the motion detector and being operable in response thereto to produce displacement data indicative of subject motion from a reference position;
a display having multiple indicators, each of which represents a unit of displacement from the reference position, wherein a total of the units of displacement defines an operational range of the display, and wherein the operational range of the display is less than the range of motion of the subject;
a wireless communication link between the control unit and the display for conveying the displacement data from the control unit to the display such that the display indicators provide feedback to the subject; and
a reference switch configured to allow manual selection of a portion of at least one of a dynamic range of the motion detector and the range of motion of the subject over which the operational range of the display operates.
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Abstract
A bellows-based patient breath-hold monitoring and feedback system for use in intermittent mode CT fluoroscopy-guided biopsies of the lung or upper abdomen where respiratory motion is a problem. Breath-hold monitoring and feedback with the bellows system allows a patient to perform consistent breath-holds at a preselected level, which in turn, optimizes intermittent mode CT fluoroscopy-guided biopsies of the lung or upper abdomen by allowing target lesions to be reliably visualized.
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Citations
14 Claims
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1. A motion detection system for monitoring a range of motion of a subject during a medical procedure, the combination comprising:
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a motion detector positioned to measure subject motion and produce an input signal; a control unit connected to receive the input signal from the motion detector and being operable in response thereto to produce displacement data indicative of subject motion from a reference position; a display having multiple indicators, each of which represents a unit of displacement from the reference position, wherein a total of the units of displacement defines an operational range of the display, and wherein the operational range of the display is less than the range of motion of the subject; a wireless communication link between the control unit and the display for conveying the displacement data from the control unit to the display such that the display indicators provide feedback to the subject; and a reference switch configured to allow manual selection of a portion of at least one of a dynamic range of the motion detector and the range of motion of the subject over which the operational range of the display operates. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A motion detection system for monitoring the respiratory motion of a subject during a medical procedure, the combination comprising:
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a motion detector for sensing the respiratory motion of the subject and producing an input signal, the sensitivity of the motion detector being set such that the dynamic range of the motion detector input signal is substantially less than the dynamic range of subject motion during a complete respiratory cycle; a control unit connected to receive the input signal from the motion detector and being operable in response thereto to produce displacement data indicative of subject motion from a reference position; a display coupled to the control unit for indicating the displacement of the subject from the reference position; and a reference switch which is coupled to the motion detector and is manually operable to establish a reference position in the subject'"'"'s respiratory cycle from which displacement is measured. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification