Data management system for use in angiographic X-ray imaging
A data management system automatically manages image buffers to produce images for angiography using a first memory portion, a second memory portion and an image data processor. The first memory portion stores first image frame data representing minimum luminance values of individual pixels of a sequence of medical images. The second memory portion stores second image frame data comprising a difference between the minimum luminance values and corresponding maximum luminance values. The image data processor processes data representing an acquired X-ray image frame of a catheterized vessel using a stored frame of maximum or minimum pixel luminance values and the second image frame data to provide an image with enhanced visualization of a catheter in a vessel.
1. A data management system for use in Angiographic X-ray imaging, comprising:
a first memory portion for storing first image frame data representing minimum luminance values of individual pixels of a sequence of medical images acquired during introduction of a contrast agent into patient vasculature, an individual pixel minimum luminance value is substantially the lowest pixel value of the plurality of pixel values for a particular pixel position occurring in said sequence of medical images;
a second memory portion for storing second image frame data comprising a difference between said minimum luminance values and corresponding maximum luminance values, said maximum luminance values comprising maximum luminance values of individual pixels of said sequence of medical images, an individual pixel maximum luminance value is substantially the highest pixel value of the plurality of pixel values for a particular pixel position occurring in said sequence of medical images; and
an image data processor for processing data representing an acquired X-ray image frame of a catheterized vessel using said second image frame data to provide an image with enhanced visualization of a catheter in a vessel.
2. A system according to claim 1 , wherein
said image data processor processes data representing said acquired X-ray image frame of the catheterized vessel by subtracting data representing a frame of said maximum luminance values and said second image frame from said data representing said acquired X-ray image frame, to provide said image with enhanced visualization of said catheter in said vessel.
3. A system according to claim 1 , wherein
said image data processor processes data representing said acquired X-ray image frame of the catheterized vessel by subtracting data representing a frame of said minimum luminance values and said second image frame from said data representing said acquired X-ray image frame, to provide said image with enhanced visualization of said catheter in said vessel.
4. A system according to claim 1 , wherein
said image data processor stores said second image frame data in said first memory portion, in response to generation of said second image frame data.
5. A system according to claim 4 , wherein
said image data processor overwrites said first image frame data with said second image frame data, between acquisition of X-ray images of a patient during live fluoroscopy.
6. A system according to claim 1 , wherein
said image data processor, for each acquired X-ray image frame of a sequence of image frames of Hall the catheterized vessel, stores first image frame data and second image frame data and processes data representing an acquired X-ray image frame of the catheterized vessel to provide an image with enhanced visualization data of said catheter in said vessel.
7. A system according to claim 1 , wherein
said image data processor stores said second image frame data in said first memory portion, in response to generation of said second image frame data and
filters said second image frame data acquired from said first memory portion for use in providing said image with enhanced visualization of said catheter in said vessel.
8. A method for managing data for use in Angiographic X-ray imaging, comprising the activities:
storing in a first memory portion, first image frame data representing minimum luminance values of individual pixels of a sequence of medical images acquired during introduction of a contrast agent into patient vasculature, an individual pixel minimum luminance value is substantially the lowest pixel value of the plurality of pixel values for a particular pixel position occurring in said sequence of medical images;
storing in a second memory portion, second image frame data comprising a difference between said minimum luminance values and corresponding maximum luminance values, said maximum luminance values comprising maximum luminance values of individual pixels of said sequence of medical images, an individual pixel maximum luminance value is substantially the highest pixel value of the plurality of pixel values for a particular pixel position occurring in said sequence of medical images; and
processing data representing an acquired X-ray image frame of a catheterized vessel using said second image frame data to provide an image with enhanced visualization of a catheter in a vessel.
9. A method according to claim 8 , including the activity of
overwriting said first image frame data with said second image frame data, between acquisition of X-ray images of a patient during live fluoroscopy.
10. A method according to claim 8 , including the activity of
subtracting data representing a frame of said maximum luminance values and said second image frame from said data representing said acquired X-ray image frame, to provide said image with enhanced visualization of said catheter in said vessel.
11. A method according to claim 8 , including the activity of
subtracting data representing a frame of said minimum luminance values and said second image frame from said data representing said acquired X-ray image frame, to provide said image with enhanced visualization of said catheter in said vessel.
12. A method according to claim 8 , including the activity of
storing said second image frame data in said first memory portion, in response to generation of said second image frame data.
13. A method according to claim 8 , including the activity of
for each acquired X-ray image frame of a sequence of image frames of Rail the catheterized vessel, stores first image frame data and second image frame data and processes data representing an acquired X-ray image frame of the catheterized vessel to provide an image with enhanced visualization data of said catheter in said vessel.
14. A method according to claim 8 , including the activities of
storing said second image frame data in said first memory portion, in response to generation of said second image frame data and
filtering said second image frame data acquired from said first memory portion for use in providing said image with enhanced visualization of said catheter in said vessel.
15. A method for managing data for use in Angiographic X-ray imaging, comprising the activities:
storing in a first memory portion, first image frame data representing minimum luminance values of individual pixels of a sequence of medical images acquired during introduction of a contrast agent into patient vasculature, an individual pixel minimum luminance value is substantially the lowest pixel value of the plurality of pixel values for a particular pixel position occurring in said sequence of medical images;
storing in a second memory portion, second image frame data comprising a difference between said minimum luminance values and corresponding maximum luminance values, said maximum luminance values comprising maximum luminance values of individual pixels of said sequence of medical images, an individual pixel maximum luminance value is substantially the highest pixel value of the plurality of pixel values for a particular pixel position occurring in said sequence of medical images;
overwriting said first image frame data with said second image frame data, between acquisition of X-ray images of a patient during live fluoroscopy; and
processing data representing an acquired X-ray image frame of a catheterized vessel using said second image frame data to provide an image with enhanced visualization of a catheter in a vessel.