RAD 255: Final Limits Review

Diagnostic x-rays should scatter a minimum of ____ times before reaching behind the barrier

Cummulative limit for EfD (occupational)

Exposure control must be ____ to the operator console.

Occupational non-emergency lifesaving event

Occupational emergency lifesaving event

Each time anx-ray beam scatters, its intensity is ________ its original intensity

Leakage radiation cannot be more than ____ mGy/hr @ 1 m from the source

What % of the SID must the collimator light and irradiated area be acurate?

The primary barier must be @ least _____ in. lead equivalent.

Actual exposure outside the x-ray room rarely exceedes ____ of accepted dose limit

What minimum total amount of filtration (inherent + added) is required in xray equipment below 50 kVp?

Dose required to produce multi-hit aberrations

The SID indicator should be accurate within

Dose required to produce lymphopenia

Use factor for secondary barriers is ____

Whole-body total Effective Dose Equivalent limit of general public: (infreq. exposure)

Who is in the controlled area?

What minimum total amount of filtration (inherent + added) is required in xray equipment above 70 kVp?

Minimal source-to-end of collimator distance of ____ on mobile fluoro unit

Dose required to produce a decreased number of spermatozoa

The positive beam limitation (PBL) must be accurate within ____%

Education and training skin, hands, feet

The percentage of time which the x-ray beam is on

Dose required to produce erythema

Dose required to produce acute cataracts

Whole-body total Effective Dose Equivalent limit of general public: (freq. exposure)

Total Eq dose embryo-fetus exposure

Limit for annual dose (Occupational): Thyroid,skin,hands & feet

Bucky slot cover should be @ least _____ mm Pb

Dose required to produce latent period of ARS

Fluoro units must have a __________ switch

Fluoro no option high level control should not exceed:

Variance of reproducibility should not exceed:

Dose required to produce CNS ARS

The maximum acceptable variation in linearity is ____% from one mA station to an adjacent mA station

Dose required to produce GI ARS

Dose required to produce hematologic ARS

fluoro curtain should be @ least _____ mm Pb

Who should be monitored for dose?

Controlled areas must have barriers that reduce exposure to techs in area no less than ___ mSv/wk

Critical dose for humans unless there is a medical intervention

Dose required to produce desquamation

On a mobile unit, what is the required cord length

Dose required to produce permanent sterility

Limit for annual dose (Gen public): Lens of Eye

Limit for annual dose (Occupational): Skin in ER lifesaving events

Limit for annual dose (Occupational): Lens of Eye

Whole-body total Effective Dose Equivalent limit of occupationally exposed:

A secondary barrier should overlap the primary barrier by about

Tabletop intensity for fluoro should not exceed:

Dose required to produce permanent epilation

Monthly Eq dose embryo-fetus exposure

Dose required to produce prodromal symptoms of ARS

How tall must an operator control shield be?

Total filtration on a fluoro unit should be no less than:

Imaging intensifier assembly in fluoro should be @ least _____ mm Pb equivalent

Imminent death in humans

Fluoro high level contol should not exceed:

SID on fluoro maching should be no less than ____

Dose required to produce temporary infertility

Education and training lens of eye

Dose required to produce temporary epilation

What should be used when x-ray beam is on?

What minimum total amount of filtration (inherent + added) is required in xray equipment 50-70 kVp?

Limit for annual dose (Gen public): Thyroid,skin,hands & feet