JPWO2021249855A5 - - Google Patents

Claims (15)

an input for receiving image data representing a region of interest of a patient's body from a medical X-ray imaging device, the image data comprising: a first dark-field image obtained for a first X-ray spectrum; a second dark-field image obtained for a second X-ray spectrum, the first X-ray spectrum and the second X-ray spectrum being different;
a compositing unit that provides a composite image representing a state map by compositing the first dark-field image and the second dark-field image;
image processing devices, including; The image processing device according to claim 1, wherein the region of interest is a thoracic region and the condition map is a lung condition map. The combining unit configures the combined image as a vector-valued image, and the components of the vector-valued image correspond to the first dark-field image and the second dark-field image, or The image processing device according to claim 1 or 2, wherein the image processing device is calculated based on a visual field image and the second dark field image. 4. An image processing device according to any one of claims 1 to 3, wherein the synthesis unit determines a dark field signal for a pixel location in the composite image as a function of photon energy or as a function of correlation length. 1 . The compositing unit calculates a measure of deviation between the first dark-field image and the second dark-field image, and the pixel values of the synthesized image correspond to the measure of deviation. The image processing device according to any one of 4 to 4. Image processing according to any one of claims 1 to 5 , further comprising a controller that, when connected to the X-ray imaging device, controls the operation of the X-ray imaging device to obtain the image data. device. The controller steps through a plurality of phase steps by controlling a phase stepper mechanism of the x-ray imaging device and acquires image data from an image detector of the x-ray imaging device for each of the plurality of phase steps. , for switching between the first X-ray spectrum for at least one of the plurality of phase steps and the second X-ray spectrum for at least another one of the plurality of phase steps, etc. , controlling an X-ray source of the X-ray imaging apparatus. a segmenter for segmenting the first dark-field image, the second dark-field image, the composite image, and/or another image received via the input to identify structures of interest; An image processing device according to any one of claims 1 to 7 . a classifier for labeling each identified structure of interest with a classifier label, the classifier label being selected by the classifier from among a plurality of classifier labels based on the composite image; 9. The image processing device of claim 8 , wherein the classifier labels correspond to different states. An image processing device according to any one of claims 1 to 9 ,
an X-ray imaging apparatus that acquires a plurality of X-ray dark field images of a region of interest of a patient's body for a plurality of corresponding X-ray spectra and provides the plurality of X-ray dark field images to an input of the image processing device; and,
Imaging systems, including: 11. The imaging system of claim 10 , wherein the x-ray imaging device includes an x-ray source and an x-ray detector. 12. The imaging system of claim 11 , wherein the x-ray detector is an energy resolving photon counting detector. 13. Imaging system according to any one of claims 10 to 12 , wherein the X-ray imaging device includes a grating interferometer arrangement for differential phase contrast and dark field imaging. A method of processing image data, the method comprising:
Obtaining image data representative of a region of interest of a patient's body from a medical X-ray imaging device, the image data comprising: a first dark-field image obtained for a first X-ray spectrum; and a second dark-field image obtained for a first X-ray spectrum. a second dark-field image obtained for an X-ray spectrum, the first X-ray spectrum and the second X-ray spectrum being different;
providing a composite image representing a state map by combining the first darkfield image and the second darkfield image;
including methods. A computer program product for performing the method of claim 14 when running on a processor.