Exam (elaborations)
COMPUTED TOMOGRAPHY TEST PREP QUESTIONS AND ANSWERS
- Course
- Institution
COMPUTED TOMOGRAPHY TEST PREP QUESTIONS AND ANSWERS
[Show more]
Content preview
COMPUTED TOMOGRAPHY TEST PREPQUESTIONS AND ANSWERS
When completing a CT exam for post myelogram of the lumbar spine in an adult patient,
which of the following would be an acceptable range for contrast volume for the
intrathecal injection? - Answer-12 to 14ml
Small children undergoing CT exams are commonly sedated with the medication
________. - Answer-Chloral hydrate
Disassociating into charged particles when placed into a solution is the term given to
______ contrast material. - Answer-Ionic
The use of non-ionic vs. ionic contrast media should be based on? - Answer-1. age and
physical condition of patient
2. allergic history of the patient
Due to the density, barium sulfate suspensions used for CT exams must be a
concentration of? - Answer-1% to 3% barium sulfate
The number of ions formed when a substance dissociates in a solution is referred to as
___________. - Answer-Osmolality
The advantages of a helical Ct when compared to conventional CT scanning is/are? -
Answer-1. reduces misregistation artifacts
2. reduces scan time
The best eval of coronary artery disease which of the following types of ct scanners
should be used? - Answer-Electron Beam Scanner
The advantages of using an automatic power injector versus the manuel bolus method
of IV contrast administration includes? - Answer--uniform contrast admin through entire
length of study
-increased tissue enhancement due to the fast injection rates
The flow rate for a biphasic tech, for a spiral CT study of the liver would include? -
Answer-3ml/s for 50ml followed by 1.5 ml/s for 100ml
Reference detectors of 3rd generation are used to? - Answer-Measure the incident
radiation intensity and are used by the computer during calculation of the linear
attenuation coefficient.
, The recon. by the computer of a CT image received from the transmission signal
produced by the detectors must be converted into numeric information by what? -
Answer-Analog-to-digital convertor
________ can be used to measure slice thickness, noise and contrast resolution. -
Answer-Phantoms
When performing a high-resolution chest CT which of the following protocols should be
used? - Answer-1.0mm sections, bone algorithm
Slice thickness is governed by the ? - Answer-smallest single detector element
Instructions for a pt just completing an intrathecal injection of IV contrast for a post-
myelographic CT study of the lumbar spine includes? - Answer-Rest for 8 to 24 hours
with head elevated
Once the x-ray beam passes through an object the intensity of the beam to a detector is
called ? - Answer-Transmitted intensity
Mild adverse reactions to iodinated IV contrast media are common. Examples include....
- Answer-Nausea, mild urticaria and warm flush sensation
What is the primary reason iodine is the most common material used in radiopaque
contrast media? - Answer-High atomic number
Of the following x-ray interactions between the x-ray beam and the pt which results in
the most patient dose? - Answer-Photoelectric Effect
An infection that occurs from indirect contact with a contaminated object is termed? -
Answer-Fomite
Systemic hypotension causes a condition of cerebral ischmia,the term used to describe
this is? - Answer-Vasovagal Reaction
Retrospective Recons uses scan data (raw data) to reconstruct a secondary image with
an adjustment in a ________ ______. - Answer-Technical factors
Contrast materials that do not dissociate when placed in an aqueous solution due to
their low osmolatic nature are called? - Answer-Non-Ionic
Interpolation is a mathematical tool used to estimate what? - Answer-Function's
behaviors
Place the following radiographic exam in the order in which they should be performed
on a single patient. - Answer-CT abdomen, barium enema, gastrointestinal series
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 biggdreamer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80364 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now