Principles of Imaging

Question 1

bright/dark wrt x-rays

Answer 1

opacities/densities, lucencies

Question 2

x-ray modality that offers continuous imaging of the motion of internal strucutres

Answer 2

fluoroscopy

Question 3

brightness/darkness associated with the CT scan

Answer 3

bright: hyperdense/high attenuation
dark: hypodense/low attenuation

Question 4

brightness/darkness associated with ultrasound

Answer 4

bright: hyperechoic
dark: hypoechoic

Question 5

ultrasound technology used to measure and analyze blood flow

Answer 5

doppler ultrasound

Question 6

noninvasive study that uses magnets and radio waves to produce images of internal structures

Answer 6

magnetic resonance imaging (MRI)

Question 7

patient is exposed to x-rays circumferentially from a rotating x-ray tube

Answer 7

computerized tomography scan (CT scan)

Question 8

brightness/darkness in MRI

Answer 8

hyperintense: bright
hypointense: dark

Question 9

noninvasive diagnostic test for measuring biochemical changes in the structure studied

Answer 9

spectroscopy

Question 10

T/F: CT scan visualizes soft tissue better than bone.

Answer 10

False: MRI – soft tissue

CT scan – bone

Question 11

electromagnetic waves hitting a radiographic plate

Answer 11

x-ray

Question 12

high frequency sound waves bouncing off tissues

Answer 12

ultrasound