intro

Question 1

Examples of atomic imaging

Answer 1

x-ray, CT scan

Question 2

Examples of functional imaging

Answer 2

MRI , PET scan

Question 3

What type of energy does medical imaging use

Answer 3

electromagnetic

Question 4

what is attenuation

Answer 4

reduction in signal intensity

Question 5

energy path

Answer 5

source- body - detector

Question 6

what type of imaging is xray

Answer 6

projection

Question 7

dense objects are bright or dark in xrays

Answer 7

bright

Question 8

one downside to x-rays imaging

Answer 8

everything overlaps

Question 9

Steps to making a CT scan

Answer 9

A fan/ cone-shaped beam rotates around the body and then collected by detectors

Question 10

tomography

Answer 10

imaging by sections/ slices ( cross-sectional views)

Question 11

what do radioactive tracers emit

Answer 11

gamma rays

Question 12

frequency of an ultrasound transducer

Answer 12

1-5 mega hz and the higher the density the more reflective

Question 13

spatial resolution

Answer 13

ability to differentiate 2 objects close to each other
is measured by the size of the pixels

Question 14

how to reduce noise

Answer 14

increase levels of radiation or imaging time