CT integrated respiratory monitor
First Claim
1. An apparatus comprising:
- a respiratory sensor adapted to generate a respiratory signal representative of breath hold levels of a patient during a breath hold;
an imaging device operatively connected with said respiratory sensor and configured to scan the patient during said breath hold and generate a volumetric image data set of the patient, the imaging device being programmed to record said volumetric image volume data set of the patient and said respiratory signal representative of the breath hold levels of the patent taken at a plurality of points in time during said breath hold; and
,a breath hold determining circuit receiving said respiratory signal and generating a breath hold sustained signal indicating that said respiratory signal remained within a predetermined range during a predetermined time period, the breath hold sustained signal being associated in said apparatus with said volumetric image data set of the patient.
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Accused Products
Abstract
An integrated respiratory monitor and imaging device apparatus (10) is provided. The apparatus is useful for establishing pre-operative and intra-operative breath hold congruency in patients and for other interventional work. The apparatus (10) includes a respiratory monitor system (12) and an imaging device (14). The respiratory monitor system is adapted to engage a patient and generate a respiratory signal representative of a breath hold level of the patient during a breath hold. The imaging device (14) is adapted to scan the patient during the breath hold and generate a volumetric image data set of the patient. The respiratory sensor and imaging device are operatively connected to associate the respiratory signal representative of the breath hold level of the patient together with the volumetric image data set of the patient. A data storage device (64) is provided for storing a set of respiratory signals in association with a corresponding set of volumetric image data sets in the subject apparatus (10). A scanner gating function is provided to center the image acquisition time at selected points in the respiratory cycle such as at a minimum to minimize motion artifacts in the resultant image.
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Citations
51 Claims
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1. An apparatus comprising:
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a respiratory sensor adapted to generate a respiratory signal representative of breath hold levels of a patient during a breath hold; an imaging device operatively connected with said respiratory sensor and configured to scan the patient during said breath hold and generate a volumetric image data set of the patient, the imaging device being programmed to record said volumetric image volume data set of the patient and said respiratory signal representative of the breath hold levels of the patent taken at a plurality of points in time during said breath hold; and
,a breath hold determining circuit receiving said respiratory signal and generating a breath hold sustained signal indicating that said respiratory signal remained within a predetermined range during a predetermined time period, the breath hold sustained signal being associated in said apparatus with said volumetric image data set of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for establishing pre-operative and intra-operative breath hold congruency in patients, the apparatus comprising:
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a respiratory sensor generating a first respiratory signal representative of pre-operative breath hold levels of a patient during a pre-operative breath hold and a second respiratory signal representative of intra-operative breath hold levels of the patient during an intra-operative breath hold; an imaging device operatively connected with said respiratory sensor and configured to scan the patient during said pre-operative breath hold and generate a pro-operative volumetric image data set of the patient, the imaging device being programmed to associate said first respiratory signal representative of the pre-operative breath hold levels of the patient obtained a plurality of times during said breath hold together with said pre-operative volumetric image data set of the patient; a data storage device for storing first data representative of the first respiratory signal obtained said plurality of times during said breath hold in association with the pre-operative volumetric image data set; a breath hold determining circuit receiving said first respiratory signal and generating a breath hold interlock signal when a level of said first respiratory signal is within a predetermined range for a predetermined time period, the breath hold determining circuit being adapted to generate a breath hold sustained signal after said predetermined time period indicating that said respiratory signal remained within said predetermined range during said predetermined time period, the breath hold sustained signal being associated in said apparatus with said pre-operative volumetric image data set of the patient; and
,a human readable display device observable by the patient for displaying first visual indicia of said pre-operative breath hold levels based on said first data from said data storage device, together with second visual indicia of said intra-operative breath hold levels generated by said respiratory sensor. - View Dependent Claims (24, 25, 26)
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27. An apparatus comprising:
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a respiratory sensor configured to generate a respiratory signal representative of a plurality of points of a respiratory cycle of a patient during normal breathing; an imaging device configured to scan the patient during said normal breathing and generate a volumetric image data set of the patient, the imaging device having a characteristic projection acquisition time interval T and being responsive to a trigger signal to initiate said scan of said patient during said normal breathing; and
,a processor programmed to calculate an average minimum of said respiratory signal and estimate a time MIN of a next occurrence of said calculated average minimum, the processor generating said trigger signal at a time in said respiratory cycle MIN−
T/2 to substantially center said projection acquisition time interval about said average minimum of said respiratory cycle to minimize motion artifacts in said volumetric image data set.
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28. An apparatus comprising:
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a respiratory sensor configured to generate a respiratory signal representative of breath hold levels of a patient during a breath hold; an imaging device configured to scan the patient during said breath hold and generate a volumetric image data set of the patient, the imaging device being programmed to store data of said respiratory signal representative of the breath hold levels of the patent taken a plurality of times during said breath hold with said volumetric image data set of the patient ; and
,a breath hold determining circuit receiving said respiratory signal and generating a breath hold sustained signal indicating that said respiratory signal remained within a predetermined range during a predetermined time period, the breath hold sustained signal being associated in said apparatus with said volumetric image data set of the patient. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. An apparatus comprising:
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a respiratory sensor configured to generate respiratory signals representative of breath hold levels of a patient at a plurality of times during a breath hold; an imaging device programmed to scan the patient during said breath hold generate a volumetric image data set of the patient, and store;
i) said volumetric image data set of the patient and ii) said respiratory signals representative of said breath hold levels of the patient at said plurality of times during said breath; and
,a breath hold determining circuit receiving said respiratory signals and generating a breath hold sustained signal indicating that said respiratory signals remained within a predetermined range during a predetermined time period, the breath hold sustained signal being associated in said apparatus with said volumetric image data set of the patient. - View Dependent Claims (48, 49, 50, 51)
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Specification