System and method for verifying the amount of radiation delivered to an object
AssigneeSiemens Medical Systems, Inc.
InventorJohn H. Hughes
Life of this patent
Estimating the term…
Abstract
Radiation delivered to an object (13) is gathered by a detector unit (91). A central processing unit (18) reverse calculates the radiation delivered by using attenuation factors of the object (13) and exit radiation signals (92) generated by the detector unit (91). The delivered radiation is displayed on the screen of a monitor (70). Simultaneously, a radiation map from a planning system can be displayed. Thus, the amount of radiation delivered to object (13) is measured and can then be verified and displayed. A portal imaging system (90) can contain detector unit (91).
Claims15
A system for verifying radiation delivered to an object, the system comprising:
- a radiation source with an output beam directed to the object;
- detector means for sensing radiation output from the output beam and for generating exit radiation signals, the detector means sensing the output radiation beneath the object;
- and
- processing means for calculating the radiation delivered to the object, the processing means using the exit radiation signals from the detector means for the calculation.
A method for verifying radiation delivered to an object, the object containing a field to be irradiated, the method comprising the steps of:
- generating an initial output beam of radiation from a radiation source, the initial output beam being directed toward the field on the object;
- sensing exit radiation from the initial output beam directed towards the field, the sensing occurring after the radiation passes through the object;
- and
- calculating the derived output beam, the derived output beam being at least in part based on the sensed exit radiation.
Dependencies are inferred from the claim text.