Method and apparatus for information acquistion, processing, and display within a medical camera system
First Claim
1. An apparatus for displaying information used in diagnosing heart disease, said apparatus comprising:
- a processor controlled first display means for displaying a graphical representation of myocardial perfusion for a selected section of myocardium, said representation of said myocardial perfusion displayed in a first area;
a processor controlled second display means for displaying a graphical representation of myocardial wall movement for said selected myocardium section, said representation of said myocardial wall movement displayed in said first area;
a processor coupled to control said first and second display means for receiving information detected from said selected section of myocardium, said processor also for computing myocardial perfusion ratios and myocardial wall movement for said selected section of myocardium; and
said first and said second display means simultaneously displaying said respective myocardial perfusion and said myocardial wall movement graphical representations on a display screen.
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Accused Products
Abstract
A system for acquisition, processing and display of gated SPECT imaging data for use in diagnosing Coronary Artery Disease (CAD) in nuclear medicine. The present invention provides a physician with two parameters for evaluating CAD: information relating to the distribution of blood flow within the myocardium (perfusion) and information relating to myocardium wall motion (function). One aspect of the present invention provides the physician with a display of functional images representing quantitative information relating to both perfusion and function with respect to selected regions of interest of the subject heart at end-diastole and end-systole segments of the cardiac cycle. The functional display consists of arcs of varied width depending on wall motion and color coded to illustrate degrees of myocardial perfusion for different pie shaped sections of a selected region of interest within a given short axis slice of reconstructed volume data. The present invention also provides a series of display images allowing facilitated access, display, and comparison of the numerous image frames of the heart that may be collected during gated SPECT sessions. The present invention also offers the ability to define and recall parameter files representative of data acquisition and processing parameters and protocol for use in gated SPECT studies. The invention also includes a semi-list processing mode to increase efficiency of data acquisition within a camera computer system.
221 Citations
62 Claims
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1. An apparatus for displaying information used in diagnosing heart disease, said apparatus comprising:
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a processor controlled first display means for displaying a graphical representation of myocardial perfusion for a selected section of myocardium, said representation of said myocardial perfusion displayed in a first area; a processor controlled second display means for displaying a graphical representation of myocardial wall movement for said selected myocardium section, said representation of said myocardial wall movement displayed in said first area; a processor coupled to control said first and second display means for receiving information detected from said selected section of myocardium, said processor also for computing myocardial perfusion ratios and myocardial wall movement for said selected section of myocardium; and said first and said second display means simultaneously displaying said respective myocardial perfusion and said myocardial wall movement graphical representations on a display screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for displaying quantitative information used in diagnosing heart disease, said information based on images of a tomographically reconstructed volume of the heart, said apparatus comprising:
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a selector responsive to a user input for selecting a selected section of myocardium; a processor for computing a myocardial perfusion ratio for said selected section of myocardium; said processor also for computing a wall movement factor for said section of myocardium; a display device coupled to said processor for displaying both a quantitative graphical representation of said myocardial perfusion ratio and a quantitative graphical representation of said myocardial wall movement factor in a first area of said display device wherein said first area is associated with said selected section of myocardium. - View Dependent Claims (10, 11, 12, 13)
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14. An apparatus for presenting quantitative image information used for diagnosing heart disease, said quantitative image information based on data obtained using gated SPECT techniques, said apparatus comprising:
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a display system displaying a first image of a myocardial structure during diastolic phase of a cardiac cycle; said display system also displaying a second image of said myocardial structure during systolic phase of said cardiac cycle; a selection device for selecting a region of interest of said first image and also for selecting a region of interest of said second image; a processor coupled to communicate to said display system and to said selection device, said processor for computing perfusion ratios and wall movement factors for individual sections of said myocardial structure defined by said regions of interest; and
whereinsaid display system also displaying a functional ring representative of said myocardial structure, said functional ring comprising graphical representations of both said perfusion ratios and said wall movement factors for said individual sections of said myocardial structure. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An apparatus for presenting quantitative image information used for diagnosing heart disease, said quantitative image information based on data obtained using gated SPECT techniques, said apparatus comprising:
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means for displaying a first image of a myocardial structure during diastolic phase of a cardiac cycle; means for displaying a second image of said myocardial structure during systolic phase of said cardiac cycle; means for selecting a region of interest of said first image and also for selecting a region of interest of said second image, said region of interest of said first image and said region of interest of said second image each divided into a plurality of individual sections and wherein a section pair comprises sections of each region of interest that correspond to a same portion of said myocardial structure; means for computing perfusion ratios and wall movement factors for individual sections of said myocardial structure defined by said regions of interest; and means for displaying a functional ring representative of said myocardial structure, said functional ring comprising a plurality of arc sections color coded for representing perfusion ratios and of variable radial width for representing wall movement factors. - View Dependent Claims (28, 29, 30, 31)
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32. A system for processing and displaying image information acquired by a nuclear camera system using gated SPECT imaging techniques, said system comprising:
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(a) bus means for providing communication, a central processor means coupled to said bus means for processing instructions and commands, a display means coupled to said bus means for displaying information, a memory means coupled to said bus means for storing information, an input means coupled to said bus means for user interface; (b) means for tomographically reconstructing image data acquired from said gated SPECT nuclear camera system; and (c) means for displaying information based on said reconstructed image data, said means for displaying comprising; means for displaying a first image of a myocardial structure during diastolic phase of a cardiac cycle; means for displaying a second image of said myocardial structure during systolic phase of said cardiac cycle; means for selecting a region of interest of said first image and also for selecting a region of interest of said second image; means for computing perfusion ratios and wall movement factors for individual sections of said myocardial structure defined by said regions of interest; and means for displaying a functional ring representative of said myocardial structure, said functional ring comprising representations of both said perfusion ratios and said wall movement factors of said individual sections of said myocardial structure. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A computer implemented method for rendering information used in diagnosing heart disease on a display screen, said method comprising the computer implemented steps of:
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selecting a myocardium section from a tomographically reconstructed volume; determining myocardial perfusion and myocardial wall movement of said selected myocardium section; displaying in a first area on said display screen a representation of said myocardial perfusion for said selected section of myocardium; and displaying simultaneously in said first area a representation of said myocardial wall movement for said selected myocardium section. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. A computer implemented method for displaying information used in diagnosing heart disease on a display device, said method comprising the computer implemented steps of:
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acquiring a raw gSPECT image dataset, said raw gSPECT image dataset comprising data configured by projection angle and gated in segments across a cardiac cycle; processing said raw gSPECT image dataset to produce a tomographically reconstructed volume for each gated segment; and displaying on said display device a plurality of section arcs coupled together to form a functional display ring based on a particular slice of said reconstructed volume, said step of displaying a plurality of section arcs comprising the steps of; filling each arc section with a color depending on a perfusion ratio for said each arc section; and adjusting a width of said each arc section based on a wall motion factor for said each arc section. - View Dependent Claims (47)
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48. A computer implemented method for displaying information used in diagnosing heart disease on a display screen, said information obtained using gated SPECT imaging techniques and tomographic reconstruction procedures, said method comprising the computer implemented steps of:
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receiving a computed ratio for myocardial perfusion for a selected section of myocardium; receiving a computed wall movement factor for myocardial wall movement for said selected section of myocardium; displaying in a first area on said display screen a color representation of said myocardial perfusion ratio for said selected section of myocardium; and displaying a width of said first area of a particular dimension based on said myocardial wall movement factor for said selected myocardium section. - View Dependent Claims (49, 50)
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51. A computer implemented method for displaying information on a display screen used in diagnosing heart disease, said information obtained using gated SPECT imaging techniques and tomographic reconstruction procedures, said method comprising the computer implemented steps of:
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receiving a plurality of computed ratios representing myocardial perfusion for a selected region of myocardium; receiving a plurality of computed wall movement factors representing myocardial wall movement for said selected region of myocardium; rendering a functional ring on said display screen, said functional ring comprising a plurality of arc sections, said plurality of arc sections presenting representations of both said computed perfusion ratios and said computed wall movement factors of said selected region of said myocardium. - View Dependent Claims (52, 53, 54)
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55. In a computer system including bus means for providing communication, a central processor means coupled to said bus means for processing instructions and commands, a display means coupled to said bus means for displaying information, a memory means coupled to said bus means for storing information, and an input means coupled to said bus means for user interface, a method for presenting information used for diagnosing heart disease, said method comprising the computer implemented steps of:
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displaying a first image of a myocardial structure during diastolic phase of a cardiac cycle; displaying a second image of said myocardial structure during systolic phase of said cardiac cycle; selecting a region of interest of said first image and selecting a region of interest of said second image; computing perfusion ratios and wall movement factors for individual sections of said myocardial structure defined by said regions of interest; and displaying a functional ring representative of said myocardial structure, said functional ring comprising representations of both said perfusion ratios and said wall movement factors of said individual sections of said myocardial structure. - View Dependent Claims (56, 57, 58, 59, 60, 61)
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62. In a computer system including bus means for providing communication, a central processor means coupled to said bus means for processing instructions and commands, a display means coupled to said bus means for displaying information, a memory means coupled to said bus means for storing information, and an input means coupled to said bus means for user interface, a method for presenting information used for diagnosing heart disease, said method comprising the computer implemented steps of:
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configuring and storing a first set of reconstruction parameters used in tomographical reconstruction processing of raw image information, said first set of reconstruction Parameters defining;
(a) slice thickness; and
(b) reconstruction limits;configuring and storing a second set of reconstruction Parameters used in tomographical reconstruction processing of raw image information, said second set of reconstruction parameters defining;
(a) slice thickness; and
(b) reconstruction limits, wherein said first and second set of reconstruction parameters are different;acquiring said raw image information from a camera system using gated SPECT imaging techniques; recalling said stored first set of reconstruction parameters; reconstructing a first image volume based on said first set of reconstruction parameters and said raw image information; displaying slices of said first image volume on said computer display means for different imaged segments of a cardiac cycle; recalling said stored second set of reconstruction parameters; reconstructing a second image volume based on said second set of reconstruction parameters and said raw image information; and displaying slices of said second image volume on said computer display means for different imaged segments of a cardiac cycle.
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Specification