CT Quiz 2/5/15 Flashcards Preview

spring 2015 > CT Quiz 2/5/15 > Flashcards

Flashcards in CT Quiz 2/5/15 Deck (10)
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The opening of gantry

Aperture

1

◾️where pt lies and is moved within the gantry
◾️aka couch
◾️must be accurate and reliable
◾️determines the extent a patient can be scanned without positioning
◾️Moves within gantry by incrementation, feed, step, or index

Table

2

Ring shaped structure containing many components

Gantry

3

◾️used to restrict the beam to a specific area of interest only
◾️effects both pt dose and image quality

Collimator Assembly

4

Responsible for computing at least thousands of equations so an image can be created

Computer

5

◾️measures the photons that pass through the patient and strike the detectors
◾️converts analog signal from the detector into a digital signal

Data Acquisition System

6

Where the technologist programs the whole exam

Operators (system) Console

7

Collects information regarding the degree to which each anatomical structure attenuated the beam

Detector

8

◾️reduce radiation dose to Pt and help minimize image artifacts
◾️improves image quality
◾️Reduces range of X-ray that reach the patient by removing the long wave length X-rays

Filters

9

Attaches to the table for cranium exams

Cradle