Exam (elaborations)
RTE 1000 Final Exam (3)
- Course
- Institution
RTE 1000 Final Exam (3)
[Show more]
Seller
Follow
denicetho
Content preview
RTE 1000 Final ExamAttentuation - ANS-The process by which a beam of x-ray photons is altered as it
passes through matter
Remnant Radiation - ANS-All radiation exiting the patient during exposure and
ultimately striking the receptor
List 4 Requirements that are needed for an X-ray production - ANS-1. Vacuum 2.
Source of Electrons 3. Target for electrons 4. High Voltage
The component of x ray tube that controls the size and shape of the x ray exposure field
is the is the - ANS-Collimator
ALARA - ANS-As Low As Reasonably Achievable
How does the use of grids affect the contrast in radiograph? - ANS-The use of grids
increase contrast
Grids - ANS-lead strips that absorb 90% scatter radiation (you would need to increase
technique because part of the useful beams get absorbed)
Radiolucent - ANS-materials allow x-ray photons to pass through easily (low radiation)
Radiopaque - ANS-materials that do not permit the passage of x-rays (high radiation)
Kilovoltage peak (kVp) - ANS-Highest voltage of x-ray tube used during an exposure
*CONTROLS QUALITY*
*CONTROLS ENERGY OF THE BEAM*
*CONTROLS CONTRAST*
What happens when kVp is high? - ANS-Scatter=increases
Contrast-decreases
Source-to-image receptor distance (SID) - ANS-x-rays diverge or spread as they exit
the tube
-closer or farther from a source you either
decrease or increase
, the interaction of x-rays with matter than constitutes the greatest hazard to patients in
diagnostic radiography is - ANS-Photoelectric Effect
the unit used to measure the amount of energy absorbed in any medium is -
ANS-Radiation Absorbed Dose (RAD)
-SI unit= gray
The characteristics that determine the sensitivity of a cell to radiation are: - ANS--Age
(younger cells)
-Differentiation (less)
-High Metabolic Rate (more energy)
-High Mitotic Rate (rapidly dividing)
Fluoroscopy - ANS-Real time images
upper/lower GI
kilovoltage determines the __________ of radiation exposure where milliampere
controls its _____________ - ANS-quality; quantity
kilovoltage determines _______________ of radiographic image where milliampere
controls its ________________ - ANS-contrast; density
what are the cardinal principles of radiation protection - ANS-Time, distance and
shielding
As the kVp increases the scatter ________________ - ANS-increases
As the kVp decreases, the contrast ______________ - ANS-increases
C-Arm - ANS-a portable radiography and fluoroscopy
-images patients outside of the department
-operates on battery or plug
T/F Ionization can have biologic effects - ANS-TRUE
ionizing radiation comes from two major sources. What are they? - ANS-1. Natural
background radiation
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 denicetho. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.90. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76658 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now