Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Reexamination Certificate
2006-09-11
2008-12-02
Porta, David P. (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
Reexamination Certificate
active
07459688
ABSTRACT:
An apparatus for radiographic examination includes a detection unit including a detector configured to detect a gamma ray emitted from a radioactive isotope in an object and to output a detected signal, a first measurement unit configured to determine a first crossing time at which a pulse height of the detected signal becomes substantially equal to a first threshold value, a second measurement unit configured to determine a second crossing time at which the pulse height of the detected signal becomes substantially equal to a second threshold value, and an incidence time calculation unit configured to calculate a starting time of the detected signal based on the first crossing time and the second crossing time and to output detection data; and an information processing unit configured to determine distribution of radioactive isotopes in the object based on multiple sets of said detection data.
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Alan Wintenberg, “Integrated Circuit Front-Ends for Nuclear Pulse Processing: Front-end Circuits for Timing Applications”, 2003 IEEE-Nuclear Science Symposium, a total of 10 sheets.
Kim Kiho
Porta David P.
Squire Sanders & Dempsey L.L.P.
Sumitomo Heavy Industrie's, Ltd.
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