MRI

Question 1

Stong magnetic field in MRI makes

Answer 1

spatial map of hydrogen atoms in water and fat

Question 2

pros of MRI

Answer 2

safe
images in 2D and 3D
good contrast in soft tissue
good spatial resolution

Question 3

cons of MRI

Answer 3

slower than Ultrasound./ CT
expensive
patients have to be in small tube

Question 4

MRI

Answer 4

good for high res of soft tissue on any plane or angle

Question 5

x-ray

Answer 5

good for bone fractures and fluid in the lungs

Question 6

CT

Answer 6

good for brain tumors requires reconstruction

Question 7

ultrasound

Answer 7

good for fast imaging
lower image quality

Question 8

cool magnet because

Answer 8

prevents heating up so wires can remain conductive

Question 9

3 main components of an MRI scanner

Answer 9

main superconducting magnet ( aligns protons )
gradient magnet ( localizes the signal )
RF coil( transmits and receives waves)

Question 10

T1 image fluid appears

Answer 10

dark

Question 11

T2 image fluid appears

Answer 11

white

Question 12

T2 beneficial becuase

Answer 12

easier to see fluid barriers/ leaks
easier to see tumors