Limited Radiology Exam Study Guide.
Nov. 8, 1895 by Wilhelm Roentgen at University of Wurzburg, Germany - AnswerWhen, who,
and where xrays were discovered
American Society of Radiologic Technologists (ASRT) - AnswerFounded in Chicago in 1920
continuing education, professional journal, guidance ...
Nov. 8, 1895 by Wilhelm Roentgen at University of Wurzburg, Germany - Answer✔When, who,
and where xrays were discovered
American Society of Radiologic Technologists (ASRT) - Answer✔Founded in Chicago in 1920
continuing education, professional journal, guidance for radiographic educators, and publishes a
CODE OF ETHICS
American Registry of Radiologic Technologists (ARRT) - Answer✔establish standards and
examinations to certify RTs
published Rules of Ethics
Joint Review Committee on Education in Radiologic Technology (JRCERT) - Answer✔National
organization that formally accredits schools of rad tech. Formed in 1969. Also accredits limited
radiographer programs
Reciprocity - Answer✔The credential that is issued in one state is upheld in another
Practicing outside your credentials may result in - Answer✔fines, imprisonment, or both
The # of states that utilize ARRT limited scope exam for state licensing - Answer✔35
xray tube - Answer✔source of xrays
tube housing - Answer✔lead-lined casing that envelops the xray tube
tube port - Answer✔the hole where the xrays exit from the xray tube
primary radiation - Answer✔the xrays that leave the tube
radiation field - Answer✔the squared area of the xray beam that strikes the patient and x ray
table
central ray - Answer✔imaginary line that is in the center of the xray beam
image receptor - Answer✔the device that catches the xrays after they have passed through the pt
tissue density - Answer✔bone will absorb more radiation than less dense tissue, like muscle
remnant radiation - Answer✔the radiation that passes thru the pt and hits the IR creating a latent
image on the IR before it is processed
visible image - Answer✔what you get when you process a latent image on an IR
attenuation - Answer✔absorbtion of the xray beam into matter
scatter - Answer✔the patient is the primary source of scatter
scatter radiation - Answer✔has less energy than the primary x ray beam but is not as easily
controlled
scatter radiation fog - Answer✔unwanted image exposure caused by scatter radiation
Most frequent adverse event during an xray - Answer✔patient falling
How body parts are measured to determine correct exposure factors - Answer✔with a caliper, in
cm
below 85 kvp, an adjustment of 2 kvp/cm will compensate for small changes in what/ -
Answer✔Size of the body part
Above 85 kvp, a change of 3 kvp/cm is necessary depending on.... - Answer✔size of the body
part
Best factor to change when compensating for part size - Answer✔mAs
How much to increase mAs for a 2 cm increase in part size - Answer✔30%
how much to decrease mAs for a 2 cm decrease in part size - Answer✔20%
Alteration of Contrast with kilovoltage - Answer✔the 15% rule
When the kvp is increased - Answer✔lengthens the scale of contrast, "less contrast"
when the kvp is decreased - Answer✔shortens the scale of contrast, "more contrast"
Using the 15% rule to increase contrast - Answer✔Decrease kvp by 15% and multiply mAs by
2(double it)
Using the 15% rule to decrease contrast - Answer✔Increase the kvp by 15% and divide the mAs
by 2 (half it)
What composes an atom - Answer✔Proton, neutron, and electron
Nucleus is made up of... - Answer✔protons and neutrons
The electrons circle the nucleus in... - Answer✔shells
Protons have what kind of charge - Answer✔Positive
Electrons have what kind of charge - Answer✔negative
Neutrons have what kind of charge - Answer✔none
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