Dynamic adjustment of X-ray acquisition parameters
View Patent ↗Among other things, one or more techniques and/or systems are described for dynamically adjusting one or more X-ray acquisition parameters of an X-ray imaging modality. During a first portion of an examination of an object, the object is examined using a first set of X-ray acquisition parameters and a first image is generated. A region-of-interest is identified in the first image and one or more X-ray acquisition parameters are adjusted as a function of the identified region-of-interest to establish a second set of X-ray acquisition parameters. During a second portion of the examination of the object, the object is examined using the second set of X-ray acquisition parameters to generate a second image. In this way, X-ray acquisition parameters can be adjusted in real-time or ‘on the fly’ to obtain a (more) desired image.
1. A method, comprising:
receiving historical image data representative of an object examined at a first X-ray dosage during a prior examination of the object;
examining the object at a second X-ray dosage to generate first image data representative of the object at a present orientation, wherein the second X-ray dosage is less than the first X-ray dosage;
co-registering the historical image data with the first image data to generate second image data representative of the object at the present orientation;
identifying a region-of-interest of the object in the second image data;
setting an X-ray acquisition parameter based upon the region-of-interest to yield a set X-ray acquisition parameter; and
reexamining the object according to the set X-ray acquisition parameter.
2. The method of claim 1 , wherein the examining the object at a second X-ray dosage comprises performing a computed tomography (CT) examination on the object.
3. The method of claim 1 , comprising:
analyzing the region-of-interest to identify an anatomical feature of the region-of-interest.
4. The method of claim 1 , wherein the setting comprises setting at least one of:
X-ray tube current,
X-ray tube voltage,
X-ray beam shape,
X-ray beam filtration,
detector spatial resolution,
temporal resolution,
digital acquisition system filter parameters, or
image generation filter parameters.
5. The method of claim 1 , wherein the historical image data is representative of the object at a historical orientation that is different than the present orientation.
6. The method of claim 3 , wherein the setting comprises setting the X-ray acquisition parameter based upon the anatomical feature.
7. The method of claim 1 , wherein the X-ray acquisition parameter comprises detector spatial resolution.
8. The method of claim 1 , comprising displaying a region-of-interest window configured to overlay at least some of the second image data and to be moved about the second image data, wherein the region-of-interest window defines the region-of-interest.
9. The method of claim 8 , comprising increasing or decreasing a size of the region-of-interest window based upon user input.
10. The method of claim 1 , wherein the setting comprises:
analyzing the region-of-interest to identify a feature of the region-of-interest; and
automatically setting the X-ray acquisition parameter based upon the feature.
11. The method of claim 1 , comprising:
presenting a menu displaying menu options for setting the X-ray acquisition parameter; and
receiving an indication of a selection from the menu options,
wherein the setting comprises setting the X-ray acquisition parameter according to the selection.
12. The method of claim 11 , wherein the presenting comprises presenting the menu in response to the identifying.
13. A system comprising:
an examination unit configured to examine an object at a first X-ray dosage to generate first image data representative of the object at a present orientation;
a co-registration component configured to:
receive historical image data representative of the object examined at a second X-ray dosage during a prior examination of the object, wherein the first X-ray dosage is less than the second X-ray dosage, and
co-register the historical image data with the first image data to generate second image data representative of the object at the present orientation;
a region-of-interest processing component configured to identify a region-of-interest of the object in the second image data; and
an X-ray parameters component configured to set an X-ray acquisition parameter based upon the region-of-interest to yield a set X-ray acquisition parameter,
wherein the examination unit is configured to reexamine the object according to the set X-ray acquisition parameter.
14. The system of claim 13 , wherein the historical image data is representative of the object at a historical orientation that is different than the present orientation.
15. The system of claim 13 , wherein the region-of-interest processing component is configured to analyze the region-of-interest to identify an anatomical feature of the region-of-interest, and wherein the X-ray parameters component is configured to set the X-ray acquisition parameter based upon the anatomical feature.
16. The system of claim 13 , wherein the X-ray acquisition parameter comprises at least one of a detector spatial resolution or a temporal resolution.
17. The system of claim 13 , wherein the examination unit comprises a computed tomography (CT) system.
18. The system of claim 13 , comprising a presentation component configured to provide for presentation a region-of-interest window configured to overlay at least some of the second image data and to be moved about the second image data, wherein the region-of-interest window defines the region-of-interest.
19. The system of claim 13 , comprising a presentation component configured to provide for presentation of a menu displaying menu options for setting the X-ray acquisition parameter.
20. A computer readable medium comprising computer executable instructions that when executed perform a method, comprising:
receiving historical image data representative of an object examined at a first X-ray dosage during a prior examination of the object;
examining the object at a second X-ray dosage to generate first image data representative of the object at a present orientation, wherein the second X-ray dosage is less than the first X-ray dosage;
co-registering the historical image data with the first image data to generate second image data representative of the object at the present orientation;
identifying a region-of-interest of the object in the second image data;
setting an X-ray acquisition parameter based upon the region-of-interest to yield a set X-ray acquisition parameter; and
reexamining the object according to the set X-ray acquisition parameter.