Limited USMLE Radiology Exam with complete accurate answers.
0 view 0 purchase
Course
USMLE
Institution
USMLE
What do collimators do? And what is the federally mandated limited diameter of the intraoral dental x-ray beam? - Answer Collimators control the size and shape of the useful beam. It reduces the beam to reduce scatter radiation. It is a lead diaphragm placed in the path of the primary beam as it ex...
Limited USMLE Radiology Exam with complete accurate
answers.
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 absorption 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
The K shell is ____________ the nucleus - Answer nearest
Most important electron shell in radiography - Answer K shell
Electrons are held in place by a ____________ _______. - Answer
binding energy
Calcium = - Answer Ca
Lead = - Answer Pb
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller CynnExams. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
