System and method to unpile overlapping pulses
AssigneeSiemens Medical Solutions USA, Inc.
InventorRonald E. Malmin
Life of this patent
Estimating the term…
Abstract
A system includes reception of an a electrical signal from a light sensor, determination of a first integral over a first number of samples of the electrical signal, determination of an estimated energy of a first pulse based on the first integral, where the electrical signal includes the first pulse and a second pulse, where a portion of the second pulse overlaps a portion of the first pulse, determination of a second integral over a second number of samples of the electrical signal, determination of a second estimated energy of the first pulse over the second number of samples, determination of a residual short integral based on the second integral and the second estimated energy, and determination of an estimated energy of the second pulse based on the residual short integral.
Claims18
A system comprising:
- a scintillator to receive radiation and to generate a plurality of light photons in response to reception of the radiation;
- a light sensor to receive light photons and to generate an electrical signal in response to reception of the light photon;
- and
- a processing unit to:
- receive the electrical signal from the light sensor, the received electrical signal comprising a first pulse, a second pulse overlapping the first pulse at a first time and a third pulse overlapping, the first pulse and the second pulse at a second time;
- determine a first integral over a first number of samples of the electrical signal to the first time;
- determine an estimated energy of the first pulse based on the first integral;
- determine a second estimated energy of the first pulse from the first time to the second time based on the estimated energy of the first pulse;
- determine a residual short integral of the second pulse by subtracting the second estimated energy of the first pulse from the second integral;
- determine an estimated energy of the second pulse based on the residual short integral of the second pulse;
- determine a third integral over a third number of samples of the electrical signal from the second time to a third time;
- determine a third estimated energy of the first pulse from the second time to the third time based on the estimated energy of the first pulse;
- determine a second estimated energy of the second pulse from the second time to the third time based on the estimated energy of the second pulse;
- determine a residual short integral of the third pulse by subtracting the third estimated energy of the first pulse and the second estimated energy of the second pulse from the third integral;
- and
- determine an estimated energy of the third pulse based on the residual short integral of the third pulse.
A method comprising:
- receiving an electrical signal comprising a first pulse, a second pulse overlapping the first pulse at a first time, and a third pulse overlapping the first pulse and the second pulse at a second time;
- determining a first integral over a first number of samples of the electrical signal to the first time;
- determining an estimated energy of the first pulse based on the first integral;
- determining a second integral over a second number of samples of the electrical signal from the first time to the second time;
- determining a second estimated energy of the first pulse from the first time to the second time based on the estimated energy of the first pulse;
- determining a residual short integral of the second pulse by subtracting the second estimated energy of the first pulse from the second integral;
- and
- determining an estimated energy of the second pulse based on the residual short integral of the second pulse;
- determining a third integral over a third number of samples of the electrical signal from the second time to a third time;
- determining a third estimated energy of the first pulse from the second time to the third time based on the estimated energy of the first pulse;
- determining a second estimated energy of the second pulse from the second time to the third time based on the estimated energy of the second pulse;
- determining a residual short integral of the third pulse by subtracting the third estimated energy of the first pulse and the second estimated energy of the second pulse from the third integral;
- and
- determining an estimated energy of the third pulse based on the residual short integral of the third pulse.
Dependencies are inferred from the claim text.