Method and system for radiation application
A method for generating one or more images includes collecting data samples representative of a motion of an object, acquiring image data of at least a part of the object over a time interval, synchronizing the data samples and the image data to a common time base, and generating one or more images based on the synchronized image data. A method for generating one or more images includes acquiring image data of at least a part of an object over a time interval, associating the image data with one or more phases of a motion cycle, and constructing one or more images using the image data that are associated with the respective one or more phases.
1. A method for gating an application of radiation to a patient, comprising:
directing a camera at a patient;
generating image data representative of a position of the patient associated with a physiological movement of the patient;
obtaining an amplitude value and a phase value based at least in part on the image data;
combining the amplitude value and the phase value to form a vector;
performing an analysis using the vector; and
gating an application of radiation to the patient based upon a result from the act of performing the analysis.
2. The method of claim 1 , further comprising locating a marker block on the patient.
3. The method of claim 2 , wherein the marker block comprises two or more markers.
4. The method of claim 1 , wherein the gating comprises predictively actuating a gating component.
5. The method of claim 1 , further comprising determining deviation from periodicity based on the result from the act of performing the analysis.
6. The method of claim 1 , wherein the act of performing the analysis using the vector comprises comparing, using an electronic processing unit, the vector with a cluster of values associated with previous respiration samples.
7. The method of claim 1 , wherein the act of performing the analysis using the vector comprises:
comparing, using an electronic processing unit, the vector with a cluster of values in a histogram, the cluster of values associated with previous respiration samples; and
determining, using the electronic processing unit, whether there is deviation from periodicity based on a result from the act of comparing.
8. The method of claim 1 , wherein the radiation comprises imaging radiation.
9. The method of claim 1 , wherein the act of performing the analysis comprises processing the vector with histogram values.
10. The method of claim 9 , wherein the histogram values comprise a plurality of previous vectors.
11. The method of claim 10 , wherein each of the previous vectors comprises a breathing amplitude value, and a breathing phase value.
12. The method of claim 1 , wherein the phase value is between 0 and 2π.
13. The method of claim 6 , wherein the cluster of values is a part of a histogram.
14. The method of claim 6 , wherein the cluster of values comprises a plurality of previous vectors.
15. The method of claim 14 , wherein each of the previous vectors comprises a breathing amplitude value, and a breathing phase value.
16. The method of claim 7 , wherein the cluster of values comprises a plurality of previous vectors.
17. The method of claim 16 , wherein each of the previous vectors comprises a breathing amplitude value, and a breathing phase value.
18. The method of claim 1 , wherein the phase value is within a range of possible phase values, and wherein the possible phase values represent respectively different extents of a breathing in a respiratory cycle.