G - Physics – 03 – B
Patent
G - Physics
03
B
G03B 42/00 (2006.01) G01T 1/164 (2006.01) G01T 1/17 (2006.01)
Patent
CA 2042698
P473 Abstract of the Disclosure An energy spectrum is constructed per location from detected counts that are stored according to their measured energy as well as their location. Then the counts per location produced by unscattered photons is determined by convolution of the energy distribution of the Compton scattered photons with the energy spread function of the system to provide system dependent Compton energy distribution/location. A trial function of the system energy spread function multiplied by unknown coefficients of the unscattered photons plus unknown coefficients of the scattered photons multiplied by the system dependent Compton energy distribution is constructed. The trial function is locally fitted to the measured energy spectrum to solve the unknown coefficients of the unscattered photons. The now known the coefficients are used to obtain the count of unscattered photons. The count of unscattered photons is used to produce Compton free images.
Berlad Gideon
Maor Dov
Shrem Yigal
Soil Adrian
Ge Medical Systems Israel Ltd.
Smart & Biggar
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