1、 2015 62220-1-3 2013II1 - ( ) , 42 TK 411 , 3 - 7 2013 . 75-4 62220 1 3:2008 - . . 1 - 3. . , - (IEC 62220 -1 - 3:2008 Medical electrical equipment Characteristics of digital X-ray imaging devices Part 1 - 3: Determination of the detective quantum ef ciency Detectors used in dynamic imaging). - , 5
2、1.0 2012 ( 8). - ( 1 ) , - . ( ) - . , (gost.ru) , 2015 , - - 62220-1-3 20132/P 60788:2004 . (IEC/TR 60788:2004 Medical electrical equipment - Glossary of de ned terms) 61267:1994 . (IEC 61267:1994 Medical diagnostic X-ray equipment - Radiation conditions for use in the determination of characterist
3、ics) 12232:1998 . . , , (ISO 12232:1998 Photography - Electronic still-picture cameras - Determination of ISO speed)3 / 60788, :3.1 (CENTRAL AXIS): , - . 62220 - 1:2003, 3.13.2 (CONVERSION FUNCTION): - ( (DN) ), -, Q -. 62220 - 1:2003, 3.2 1 Q ( - ) SNRin2, 3. 2 , , , .3.3 ; DQE(u,v) DETECTIVE QUANT
4、UM EFFI-CIENCY, DQE(u,v): , - (NPS); ( ), , - , , - . - , . 62220 - 1:2003, 3.33.4 (DETECTOR SURFACE): , . (, , ). -. 62220 - 1:2003, 3.43.5 (DIGITAL X-RAY IMAGING DE-VICE): , , , - , , - . 62220 - 1:2003, 3.53.6 (IMAGE MATRIX): , - () . 62220 - 1:2003, 3.63.7 (LAG EFFECT): . 62220-1-3 20133 62220 -
5、 1:2003, 3.73.8 (LINEARIZED DATA): , - . 62220 - 1:2003, 3.8 .3.9 ; MTF(u,v) MODULATION TRANSFER FUNCTION, MT-F(u,v): ( ) , u v. 62220 - 1:2003, 3.93.10 (NOISE): . 62220 - 1:2003, 3.103.11 (NPS), W(u,v) NOISE POWER SPECTRUM, (NPS), W(u,v) : - . , , . 62220 - 1:2003, 3.11 - . 3.12 ; DN (ORIGINAL DATE, DN): , . 62220 - 1:2003, 3.123.13 Q (PHOTON FLUENCE Q) . 62220 - 1:2003, 3.133.14 (RAW DATE): (), - , , - . 62220 - 1:2003, 3.143.15 u v (SPATIAL GFREQUENCY u or v): , - . , . 62220 - 1:2003, 3.154 4.1 - -. -. - , ( ) , . , - , . 4.2 , , - (. 60601-2-7). - , , 4. (. 60336) 1,2 . . - ( 2) 5 %.
