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Qaagi - Book of Why

Causes

Effects

the part to X - rays ... in turncontributesX - ray scatter

spurious X - rays(passive) is caused byX - ray scatter

orderto preventscatter of x - rays

The beam selectorpreventsscatter x - rays

the air gapcreatesx - ray scatter

the light receptorresultingfrom X - ray scatter

the incident X - rays interact with the electron cloud of the molecules that make up the crystalresultingin X - ray scatter

air ... not any other materialwould preventX - ray scatter

An anti - scatter grid ( ASGpreventsx - ray scatter

fuzzinessresultingfrom X - ray scatter

An interference(passive) caused byAn interference

along a ray from an X - ray source to the pixel.2009 - 08 - 13 20090202128Methods and systems for detecting presence of materials - Methods and systems for detecting the presence of concealed objects.2009 - 08 - 13 20090202129X - RAY IMAGE PROCESSING APPARATUSoriginatingalong a ray from an X - ray source to the pixel.2009 - 08 - 13 20090202128Methods and systems for detecting presence of materials - Methods and systems for detecting the presence of concealed objects.2009 - 08 - 13 20090202129X - RAY IMAGE PROCESSING APPARATUS

after the X - ray beam 122 penetrated the object 102causedafter the X - ray beam 122 penetrated the object 102

white noise(passive) caused bywhite noise

from underneath the tableoriginatingfrom underneath the table

from the interaction of the primary x - ray beam P1 ( as shown in FIGresultingfrom the interaction of the primary x - ray beam P1 ( as shown in FIG

to erroneous calculations of the DEDM imageleadsto erroneous calculations of the DEDM image

to both extremity and whole - body doses that , over a period of time , can be significantis contributingto both extremity and whole - body doses that , over a period of time , can be significant

errors(passive) caused byerrors

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