RADT 142 unit 1 Exam Questions and Answers
Filtration - Answer-Metal filters absorb low-energy x-rays before they reach the patient. These x-rays have little diagnostic value.
Collimation - Answer-Restricts the useful x-ray beam to the part of the body to be imaged.
Intensifying screens - An...
Filtration - Answer-Metal filters absorb low-energy x-rays before they reach the patient.
These x-rays have little diagnostic value.
Collimation - Answer-Restricts the useful x-ray beam to the part of the body to be
imaged.
Intensifying screens - Answer-Changes x-ray energy to light energy so that x-ray
images can be better visualized.
Protective apparel - Answer-Lead-impregnated material is used to make gloves and
aprons worn by radiologists and radiologic technologists.
Angiography - Answer-Radiographic study of blood vessels using contrast media.
Computed tomography (CT, CAT) - Answer-Uses ionized radiation to get cross-
sectional images. Can do 3D reconstruction.
Magnetic resonance imaging (MRI) - Answer-Uses magnetic and radio waves to
produce images without using ionizing radiation. Images can be taken cross-sectional or
whole body.
Nuclear medicine - Answer-Uses sensitive scanner to detect the radioactive isotopes
being emitted from the body.
Mammography - Answer-Uses low radiation to image breast tissue and detect cancers
in the breast.
Radiation therapy - Answer-uses radiation to treat and destroy cancer cells. Uses high
levels of radiation.
Fluoroscopy - Answer-Type of x-ray radiation that uses a continuous x-ray beam to take
real time images. It was discovered in 1898 by Thomas Edison.
gonadal shielding - Answer-Uses lead-impregnated material to protect the gonads of
patients within child-bearing age.
Protective barriers - Answer-The radiographic console is always located behind a lead-
lined barrier with leaded glass windows.
, Erythema, Alopecia, Anemia, and Cataracts - Answer-Radiation injuries
Matter - Answer-Anything that occupies space and has mass. It can exist in any one of
four states: liquid, solid, gas, and plasma.
Energy - Answer-The ability to do work
Potential energy - Answer-Ability to do work by virtue of position.
Kinetic energy - Answer-The energy of motion.
Chemical energy - Answer-Energy released by a chemical reaction.
Electrical energy - Answer-The work that can be done when an electron moves.
Radiation - Answer-Transfer of energy, through space or a material, away from the
source.
Non-ionizing radiation - Answer-Type of radiation that is weak and non-harmful such as
radio or microwave radiation.
Ionizing radiation - Answer-Type of radiation that is harmful such as x-rays and gamma
rays.
Electromagnetic radiation with extremely short wavelengths. They can pass through
many materials. - Answer-What are x-rays?
November 8, 1895 - Answer-Date of the discovery of x-rays.
Crookes tube - Answer-Large partially vacuumed glass tube, through which cathode
rays were conducted. Roentgen used a type of this tube, which he enclosed with black
photographic paper, to discover x-rays.
Barium Platinocyanide - Answer-A fluorescent material that happened to be on a plate
lying several meters away from where Roentgen was experimenting with his Crookes
tube. The material began to glow when cathode rays where conducted through the tube.
First radiograph - Answer-Anna Bertha Roentgen's hand that was exposed for 30
minutes.
Poly energetic - Answer-Properties of x-rays: 1
Highly penetrating - Answer-Properties of x-rays: 2
Invisible - Answer-Properties of x-rays: 3
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 Scholarsstudyguide. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
