735 resultados para Clavel, Martial
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1964/01 (A54,N215)-1964/03.
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1977/07 (T59,N269)-1977/09.
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1972/04 (T58,N248)-1972/06.
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1982/10 (T60,N290)-1982/12.
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1981/07 (T60,N285)-1981/09.
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1976/01 (N263)-1976/03.
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1986/07 (T61,N305)-1986/12 (T61,N306).
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1929 (A19,N73 = SER2,N33)- (A19,N76 = SER2,N36).
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1960/01 (A50,SER3,N199)-1960/03.
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1911/05 (A7,N25)-1912/02 (A7,N28).
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1978/10 (T59,N274)-1978/12.
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1983/01 (T60,N291)-1983/06 (T60,N292).
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NlmCategory="UNASSIGNED">As opposed to the standard detective quantum efficiency (DQE), effective DQE (eDQE) is a figure of merit that allows comparing the performances of imaging systems in the presence of scatter rejection devices. The geometry of the EOS™ slot-scanning system is such that the detector is self-collimated and rejects scattered radiation. In this study, the EOS system was characterised using the eDQE in imaging conditions similar to those used in clinical practice: with phantoms of different widths placed in the X-ray beam, for various incident air kerma and tube voltages corresponding to the phantom thickness. Scatter fractions in EOS images were extremely low, around 2 % for all configurations. Maximum eDQE values spanned 9-14.8 % for a large range of air kerma at the detector plane from 0.01 to 1.34 µGy. These figures were obtained with non-optimised EOS setting but still over-performed most of the maximum eDQEs recently assessed for various computed radiology and digital radiology systems with antiscatter grids.
