Medical Imaging Techniques Flashcards
1
Q
dense materials absorb ___ xradiation and are more opague
A
MORE x-radiation
MORE opaque
2
Q
tissue with more water is _____ radiopaque
A
LESS
3
Q
metal implants are _____ radiopaque
A
MORE
4
Q
what do MRI scans locate?
A
water and fat in the body
5
Q
T1
A
fat is brighter
6
Q
T2
A
water is brighter
7
Q
best imaging for cancers or dementia
A
PET scan
8
Q
PET shows
A
metabolic activity
9
Q
first medical imaging technique
A
X-rays
10
Q
what is a CT
A
2D slice or 3D reconstruction from multiple 2D xrays
11
Q
ultrasound
A
echos from extremely high frequency sound waves to generate image
12
Q
MRI
A
magnetic fields, radio waves, and electric field gradients produce images of fat and water
13
Q
PET scan
A
short half-life radioisotopes show increased uptake in more active tissues
14
Q
which is good for bones?
A
xrays
15
Q
which is not good for ligaments?
A
xrays
