HESI Safety V1 Questions and Answers
A+ Graded (2025)
Which .term .describes .the .process .by .which .most .xray .induced .cellular .damage
.occurs? .
A. .Indirect .effect
B. .Oxygen .enhancement
C. .Direct .effect
D. .Target .Theory .- .CORRECT .ANSWER-A
In .a .typical .xray .examination .room, .what .is .considered .a .secondary .protective
.barrier? .
A. .Wall .behind .the .chest .board
B. .Floor
C. .Wall .below .the .chest .board
D. .Ceiling .- .CORRECT .ANSWER-D
Which .term .describes .stray .radiation .that .is .emitted .through .the .xray .tube
.housing? .
A. .Scatter
B. .Exit
C. .Off .focus
D. .Leakage .- .CORRECT .ANSWER-D
For .which .long .term .effect .is .a .28 .year .old .radiographer .with .a .cumulative
.effective .dpse .of .100 .mSv .at .an .increased .risk? .
A. .Cataracts
B. .Cancer
C. .Sterility
D. .Fibrosis .- .CORRECT .ANSWER-A
, If .a .radiographer .receives .an .exposure .of .0.05 .mSv .at .a .distance .of .1.5 .feet .from
.the .tube .of .a .portable .xray .unit, .what .will .the .exposure .be .at .a .distance .6 .feet
.from .the .tube? .
A. .0.0125 .mSv
B. .9 .msv
C. .16 .msv
D. .0.003 .msv .- .CORRECT .ANSWER-D
If .an .xray .tube .which .is .the .source .of .electrons .used .to .make .xrays? .
A. .Filament
B. .Anode
C. .Focusing .cup
D. .Target .- .CORRECT .ANSWER-A
What .is .the .impact .of .using .2.5 .mm .of .aluminum .equivalent .filtration .on .teh
.primary .xray .beam? .
A. .Increase .in .the .number .fo .xrays .reaching .the .patient
B. .Noticeable .reduction .in .density
C. .Noticeable .increase .in .contrast
D. .Reduction .of .the .patients .skin .dose .- .CORRECT .ANSWER-D
What .is .the .most .likely .consequence .for .a .cell .when .an .xray .photon .interacts
.with .and .inactivates .the .cells .master .molecule?
A. .Disruption .of .cell .chemistry .only
B. .Lose .of .all .intracellular .fluid
C. .Cell .membrane .rupture
D. .Cell .death .- .CORRECT .ANSWER-D
Which .aspect .of .electrical .power .is .responsible .for .accelerating .electrons .in .an
.xray .tube? .
A. .Current .flow
B. .Resistive .heat
C. .Total .wattage
D. .Potential .difference .- .CORRECT .ANSWER-D
Which .accurately .describes .the .radiation .dose .absorbed .by .bone .marrow? .
A. .The .dose .can .be .accurately .measured .by .using .an .OSL .dosimeter
B. .The .dose .will .be .greater .than .the .entrance .skin .exposure
C. .The .dose .will .be .less .than .the .entrance .skin .exposure
D. .The .dose .can .be .accurately .measured .by .a .direct .method .- .CORRECT
.ANSWER-C
A .Bremsstrahlung .interaction .is .best .by .which .statement? .
A+ Graded (2025)
Which .term .describes .the .process .by .which .most .xray .induced .cellular .damage
.occurs? .
A. .Indirect .effect
B. .Oxygen .enhancement
C. .Direct .effect
D. .Target .Theory .- .CORRECT .ANSWER-A
In .a .typical .xray .examination .room, .what .is .considered .a .secondary .protective
.barrier? .
A. .Wall .behind .the .chest .board
B. .Floor
C. .Wall .below .the .chest .board
D. .Ceiling .- .CORRECT .ANSWER-D
Which .term .describes .stray .radiation .that .is .emitted .through .the .xray .tube
.housing? .
A. .Scatter
B. .Exit
C. .Off .focus
D. .Leakage .- .CORRECT .ANSWER-D
For .which .long .term .effect .is .a .28 .year .old .radiographer .with .a .cumulative
.effective .dpse .of .100 .mSv .at .an .increased .risk? .
A. .Cataracts
B. .Cancer
C. .Sterility
D. .Fibrosis .- .CORRECT .ANSWER-A
, If .a .radiographer .receives .an .exposure .of .0.05 .mSv .at .a .distance .of .1.5 .feet .from
.the .tube .of .a .portable .xray .unit, .what .will .the .exposure .be .at .a .distance .6 .feet
.from .the .tube? .
A. .0.0125 .mSv
B. .9 .msv
C. .16 .msv
D. .0.003 .msv .- .CORRECT .ANSWER-D
If .an .xray .tube .which .is .the .source .of .electrons .used .to .make .xrays? .
A. .Filament
B. .Anode
C. .Focusing .cup
D. .Target .- .CORRECT .ANSWER-A
What .is .the .impact .of .using .2.5 .mm .of .aluminum .equivalent .filtration .on .teh
.primary .xray .beam? .
A. .Increase .in .the .number .fo .xrays .reaching .the .patient
B. .Noticeable .reduction .in .density
C. .Noticeable .increase .in .contrast
D. .Reduction .of .the .patients .skin .dose .- .CORRECT .ANSWER-D
What .is .the .most .likely .consequence .for .a .cell .when .an .xray .photon .interacts
.with .and .inactivates .the .cells .master .molecule?
A. .Disruption .of .cell .chemistry .only
B. .Lose .of .all .intracellular .fluid
C. .Cell .membrane .rupture
D. .Cell .death .- .CORRECT .ANSWER-D
Which .aspect .of .electrical .power .is .responsible .for .accelerating .electrons .in .an
.xray .tube? .
A. .Current .flow
B. .Resistive .heat
C. .Total .wattage
D. .Potential .difference .- .CORRECT .ANSWER-D
Which .accurately .describes .the .radiation .dose .absorbed .by .bone .marrow? .
A. .The .dose .can .be .accurately .measured .by .using .an .OSL .dosimeter
B. .The .dose .will .be .greater .than .the .entrance .skin .exposure
C. .The .dose .will .be .less .than .the .entrance .skin .exposure
D. .The .dose .can .be .accurately .measured .by .a .direct .method .- .CORRECT
.ANSWER-C
A .Bremsstrahlung .interaction .is .best .by .which .statement? .
