TCDHA Rad Theory - Week 1&2 Exam Questions With Correct Answers.

TCDHA /




Rad
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Theory -
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Week
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1&2 Exam Questions With Correct Answers
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thyroid //collar //- //correct //answer(s) //✔✔ //flexible //lead //shield

-protect //the //thyroid //gland //from //scatter //radiation.



lead //apron //- //correct //answer(s) //✔✔ //a //flexible //lead //shield //

-to //protect //the //patients //reproductive //and //blood //forming //tissues //from //scatter //radiation



inherent /
/filtration //- /


/correct /


/answer(s) //✔✔ //primary //beam //passes //through //glass //window, //oil //bars //and //tube //head //



- //0.5 //to //1.0mm //aluminum



added /
/filtration //- /


/correct /


/answer(s) /


/✔✔ //FILTERS //OUT //LONG //WAVELENGTHS //W //LOW //ENERGY //AND //SOFT //RADIATION //




aluminum //discs //in //the //path //of //X-ray //beam //

, total //filtration= //-1.5mm //below //70kVp

-2.5mm //above //70 //kVp



collimator //- //correct //answer(s) //✔✔ //restricts //size //and //shape //of //X-ray //beam //



circular- //beam= //2.75in //d

rectangular- //exposes //60% //less //tissue



primary //radiation //- //correct //answer(s) //✔✔ //-useful //beam



penetrating //xray //beam //that //exits //tube //head



secondary /
/radiation //- /


/correct //answer(s) //✔✔ //created //when //the //primary //beam //interacts //with //matter




Scatter //radiation //- //correct //answer(s) //✔✔ //A //form //of //secondary //radiation

// -when //an //x-ray //beam //has //been //deflected //from //its //path //by //interaction //with //matter



insight //film //(F-speed) //- //correct //answer(s) //✔✔ //-fastest //intraoral //film

-20% //reduction //on //exposure //over //E-speed

-film //holding //devices //are //used

-limits //x //radiation //received



radiographer //protection //- //correct //answer(s) //✔✔ //-stand //6ft //away //at //90-
135 //degree //angle //to //X-ray //beam