1. A method of resolving individual signals in a radiation detector output data, the method comprising:
obtaining a signal form characterizing the detector;
obtaining digitized detector output data in a form of a digital time series;
making parameter estimates of one or more parameters of at least one signal present in the detector output data, wherein the one or more parameters comprise at least a signal temporal position of the at least one signal;
forming a mathematical model based on the digital time series and as a function of at least the signal form, the temporal position of the at least one signal, and an amplitude of the at least one signal; and
determining the amplitude of the at least one signal based on said mathematical model, the amplitude being indicative of a radiation event.
2. The method as recited in claim 1, wherein obtaining the signal form comprises receiving data about the signal form from a memory.
3. The method as recited in claim 1, wherein obtaining the signal form comprises deriving the signal form based on at least one signal present in the detector output data.
4. The method as claimed in claim 1, further comprising determining energy of the at least one signal based on at least the signal form and the parameter estimates.
5. The method as recited in claim 1, further comprising determining accuracy of the parameter estimates based on a comparison between the detector output data and the mathematical model.
6. The method as recited in claim 1, wherein obtaining the signal form comprises determining the signal form by measuring a response of the detector to one or more detections.
7. The method as recited in claim 6, further comprising interpolating the detector output data with a function to generate an expected signal form, wherein the function comprises a polynomial, exponential or spline function.
8. An apparatus for resolving individual signals in a radiation detector output data, the apparatus comprising a processor configured to:
obtain a signal form characterizing the detector;
obtain digitized detector output data in a form of a digital time series;
make parameter estimates of one or more parameters of at least one signal present in the detector output data, wherein the one or more parameters comprise at least a signal temporal position of the at least one signal;
form a mathematical model based on the digital time series and as a function of at least the signal form, the temporal position of the at least one signal, and an amplitude of the at least one signal; and
determine the amplitude of the at least one signal based on the mathematical model, the amplitude being indicative of a radiation event.
9. The apparatus as recited in claim 8, wherein the processor is configured to obtain the signal form from a memory.
10. The apparatus as recited in claim 8, wherein the processor is configured to obtain the signal form by deriving the signal form based on at least one signal present in the detector output data.
11. The apparatus as recited in claim 8, wherein the processor is further configured to determine energy of the at least one signal based on at least the signal form and the parameter estimates.
12. The apparatus as recited in claim 8, wherein the processor is further configured to determine accuracy of the parameter estimates based on a comparison between the detector output data and the mathematical model.
13. The apparatus as recited in claim 8, wherein the processor is further configured to determine the signal form by measuring a response of the detector to one or more detections.
14. The apparatus as recited in claim 13, wherein the processor is further configured to interpolate the detector output data with a function to generate an expected signal form, wherein the function comprises a polynomial, exponential or spline function.
15. A data storage medium storing instructions, when executed by a processor, causing the processor to perform a method of resolving individual signals in a radiation detector output data, the method comprising:
obtaining a signal form characterizing the detector;
obtaining digitized detector output data in a form of a digital time series;
making parameter estimates of one or more parameters of at least one signal present in the detector output data, wherein the one or more parameters comprise at least a signal temporal position of the at least one signal;
forming a mathematical model based on the digital time series and as a function of at least the signal form, the temporal position of the at least one signal, and an amplitude of the at least one signal; and
determining the amplitude of the at least one signal based on said mathematical model, the amplitude being indicative of a radiation event.
16. The data storage medium as recited in claim 15, wherein obtaining the signal form comprises receiving data about the signal form from a memory.
17. The data storage medium as recited in claim 15, wherein obtaining the signal form comprises deriving the signal form based on at least one signal present in the detector output data.
18. The data storage medium as recited in claim 15, further comprising instructions that cause the processor to determine energy of the at least one signal based on at least the signal form and the parameter estimates.
19. The data storage medium as recited in claim 15, further comprising instructions that cause the processor to determine accuracy of the parameter estimates based on a comparison between the detector output data and the mathematical model.
20. The data storage medium as recited in claim 15, further comprising instructions that cause the processor to determine the signal form by measuring a response of the detector to one or more detections.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1.-20. (canceled)
21. A patient support surface comprising
a cover having a head end, a foot end, a left side, and a right side, and
a cushion encased in the cover and including a first foam pad and a second foam pad arranged below the first foam pad, the second foam pad formed to include a plurality of perforations extending through the second foam pad.
22. The patient support apparatus of claim 21, wherein the cushion includes a third foam pad extending from the foot end of the cover toward the head end of the cover, wherein the second foam pad is arranged between the third foam pad and the head end of the cover.
23. The patient support surface of claim 22, wherein the third foam pad is formed to include a plurality of perforations.
24. The patient support surface of claim 21, wherein the cushion includes a first bolster arranged to extend along a first side of the second foam pad and a second bolster arranged along a second side of the second foam pad.
25. The patient support surface of claim 24, wherein the first and the second bolsters are each formed to include slits extending upwardly from a bottom side of the left and the right bolsters toward a top side of the left and the right bolsters.
26. The patient support surface of claim 25, wherein the first and the second bolsters are each formed to include slits extending downwardly from the top side of the left and the right bolsters toward the bottom side of the left and the right bolsters.
27. The patient support surface of claim 21, wherein the cover includes a head section, a foot section, and an expandable section coupled between the head section and the foot section.
28. The patient support surface of claim 27, wherein the expandable section includes an elastic material arranged to extend from the left side to the right side of the cover over a portion of a bottom surface of the cover.
29. The patient support surface of claim 27, wherein the expandable section includes a plurality of expandable folds arranged to extend from the left side to the right side of the cover over a portion of a bottom surface of the cover.
30. The patient support surface of claim 21, further comprising a plurality of lugs extending downwardly from the cover, each lug including a stem extending from the cover and a ball spaced apart from the cover.
31. The patient support surface of claim 21, further comprising an overlay arranged to extend over a top side of the cover, wherein the overlay includes a head portion arranged to extend from the head end of the cover toward the foot end of the cover, a foot portion arranged to extend from the foot end of the cover toward the head end of the cover, and an expandable portion coupled between the head portion and the foot portion.
32. The patient support surface of claim 31, wherein the expandable portion includes a plurality of expandable folds arranged to extend from a left side to a right side of the overlay over a portion of a bottom surface of the overlay.
33. A patient support system comprising
a patient support apparatus movable from a first configuration to a second configuration,
a patient support surface mounted on the patient support apparatus, the patient support surface including a cover and a plurality of inflatable bladders encased in the cover, and
a controller configured to adjust the pressure in at least one of the inflatable bladders during movement of the patient support apparatus from the first configuration to the second configuration, to monitor the pressure in the at least one of the inflatable bladders during movement of the patient support apparatus from the first position to the second position, and to adjust the speed of movement from the first configuration to the second configuration of the patient support apparatus based on the monitored pressure.
34. The patient support system of claim 33, wherein the controller is configured to stop movement from the first configuration to the second configuration of the patient support apparatus based on the monitored pressure if the rate of change of the monitored pressure is below a threshold.
35. The patient support system of claim 33, wherein the controller is configured to trigger an alarm if the rate of change of the monitored pressure is below a threshold.
36. The patient support system of claim 33, wherein the first position is a lie-flat configuration.
37. The patient support system of claim 33, wherein the second position is a chair-egress position.
38. The patient support system of claim 33, further comprising a plurality of sensors configured to detect pressure in the plurality of bladders and the position of the patient support apparatus, the sensors coupled to the controller.