BT: Radiology
xray appearance: air
black
H20 bright/dark in T1 MRI
dark
CT: energy source
ionizing radiation
radiographs/xrays: energy source
ionizing radiation
MRI: T1 imaging (structure, water color)
lumbar spine, dark
densities: CT vs Xray
similar
ultrasound: commonly views
soft tissues (gallbladdder, kidneys, OB/Gyn)
Ultrasound: energy source
sound waves (non-ionizing)
MRI: energy source
strong magnetic fields, H protons, radiofrequency waves
xray appearance: bone
(metal), so appears the brightest
best for soft tissues: rank
MRI>CT>Xray
CT: common view
AP, PA, Saggital/lateral (R → L or L → R)
radiography (X-ray): common view
AP, PA, Saggital/lateral (R → L or L → R), oblique (at angle),
ultrasound: hyper-echoic
Bright
MRI: T2 imaging (structure, color)
CSF and all H20, bright
ultrasound: hypo-echoic
Dark
radiograph: L&R side of patient body
Our left is patients right
CT: L&R side of patient body
Our left is patients right.
CT: commonly views
ST: lungs, abdomen, pelvis, bone fracture, healing
MRI: commonly views
abdominal organs: liver, pancreas kidneys
MRI: black
air, cortical bone
possible variables seen
air, fat, water, bone
MR T1: better for viewing
anatomy (structures)
xray appearance: fat
hard to see
MR T2: better for viewing
pathology
ultrasound: anechoic
represents fluid, dark ex: gallbladder is dark b/c filled with bile SO sound waves cannot bounce back
MRI: common view
transverse, from patients feet
MRI: shades of grey
water and soft tissue
xray appearance: water
wispy (think of lungs)
CSF/water grey/brighter in CT or Xray
xray
