100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
CT Registry Review - ARRT questions and answers $12.99   Add to cart

Exam (elaborations)

CT Registry Review - ARRT questions and answers

 6 views  0 purchase
  • Course
  • ARRT
  • Institution
  • ARRT

Absorbed dose the amount of energy absorbed per unit mass (grays or rads) back projection - 3rd step in IR loop of iterative reconstruction algorithm - ray sum data are projected back onto a matrix. blood urea nitrogen (BUN) renal function (nitrogen in blood) (7-25mg/dl) ...

[Show more]

Preview 3 out of 18  pages

  • May 7, 2024
  • 18
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
  • ARRT
  • ARRT
avatar-seller
BRAINBOOSTERS
CT Registry Review - ARRT questions and answers Absorbed dose - answer the amount of energy absorbed per unit mass (grays or rads) back projection - answer - 3rd step in IR loop of iterative reconstruction algorithm - ray sum data are projected back onto a matrix. blood urea nitrogen (BUN) - answer renal function (nitrogen in blood) (7-25mg/dl) bow-tie filter - answer Filter compensating for a cylindrical shape (body) -filter is thicker at the ends contiguous images - answer images with equal section thicknesses & reconstruction intervals Aliasing - answer streak artifact caused by insufficient views (data samples) obtained during data acquisition Algorithm - answer (AKA kernal) filter applied to raw data during reconstruction to remove blurring artifacts Afterglow - answer detector continues to glow after radiaiton is terminated (scintillation -type scanners) absorption efficiency - answer ability of an individual CT detector to absorb & measure the transmitted x -ray intensity incident upon it ALARA - answer As Low As Reasonably Achievable Analog -to-Digital Converter (ADC) - answer converts electrical signal to digital form (part of the DAS) array processor - answer reviews raw data & performs all major processing of image arterial phase - answer peak arterial enhancement following the bolus IV administration of iodinated contrast material. Artifact - answer noise on an image ataxia - answer lack of muscle coordination Attenuation - answer reduction in intensity of a radiation beam as it passes through a substance attenuation coefficient - answer value given to an object rating its ability to absorb an x -ray beam automatic tube current modulation (ATCM) - answer software used to adjust the mA throughout an acquisition to reduce patient dose Automatic Tube Voltage Selection (ATVS) - answer software used to adjust kVp based on the changing attenuation along the scan range to reduce patient dose beam hardening - answer the increase in average energy of x -ray beam as it penetrates tissue contrast resolution - answer ability to detect an object with a small difference in attenuation from surrounding tissue Contrast Induced Nephropathy (CIN) - answer substantial decline in renal function after a patient receives IV contrast Convolution - answer filter used to remove blurring artifact during back -
projection Creatinine - answer indication of renal function (0.5-1.5mg/dl) CT dose index (CTDI) - answer an approximate measure of the radiation dose received in a single slice cupping artifact - answer Middle of the image appears darker than periphery. data acquisition system (DAS) - answer electronic components of a CT system responsible for measuring the transmitted x -radiation absorbed by the detectors

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 BRAINBOOSTERS. 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.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67866 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.99
  • (0)
  Add to cart