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DR Factor Chart
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Question | Answer |
---|---|
What effect does OID have on receptor exposure? | INVERSE - more OID decreases receptor exposure |
What effect does SID have on receptor exposure? | INVERSE - more SID decreases receptor exposure |
What factors affect DISTORTION? | SID, OID, CR Angle, Patient Thickness |
What factors affect SPATIAL RESOLUTION? | OID, SID, FSS, Patient Thickness, Motion, CR angle |
What is the controlling factor for CONTRAST? | kVp |
What is the controlling factor for receptor exposure? | mAs |
What factor affects BRIGHTNESS? | NONE - brightness is a quality of the monitor |
What factors affect CONTRAST? | kVp, OID, Grid, Beam Restriction, Field Size, Patient Thickness, Filtration |
What factors affect RECEPTOR EXPOSURE? | mAs, kVp, OID, SID, Grid, Beam restriction, Field Size, Patient Thickness, Filtration, CR angle, |
What does FSS affect? | only SPATIAL RESOLUTION |
How does increasing patient thickness affect DR factors? | DECREASES Receptor exposure, DECREASES contrast, DECREASES spatial resolution, INCREASES distortion |
Which factors does motion affect? | DECREASES spatial resolution |
What factors does increasing filtration affect? | DECREASES Receptor exposure, DECREASES contrast |
What factors does increasing CR angle affect? | DECREASES Receptor exposure, DECREASES spatial resolution, INCREASES distortion |
Which factors can the tech use to decrease distortion? | DECREASE OID, INCREASE SID, DECREASE patient thickness, DECREASE CR angle |
Which factors can the tech use to increase spatial resolution? | DECREASE OID, INCREASE SID, DECREASE FSS, DECREASE patient thickness, DECREASE patient motion, DECREASE CR angle |
Which factors can the tech use to decrease contrast? | INCREASE kVp, DECREASE OID, DECREASE grid ratio, DECREASE beam restriction, INCREASE field size, INCREASE patient thickness, INCREASE filtration |
What factors can the tech use to decrease brightness? | NONE - brightness is a quality of the monitor. |
Which factors affect visibility? | Brightness and spatial resolution |
Which factor is the primary controller of Receptor exposure? | mAs |
Which factor controls contrast? | kVp |
To increase Receptor exposure, the tech can change which factors? Name all and how to apply them. | INCREASE mAS, INCREASE kVp, DECREASE OID, DECREASE SID, DECREASE grid ratio, DECREASE beam restriction, INCREASE field size, DECREASE patient thickness, DECREASE CR angle, DECREASE filtration, |