Burn depth imaging

Question 1

Two methods to evaluate burn depth?

Answer 1

LASER Doppler imaging

LASER speckle contrast imaging

Question 2

Clinical need for burn depth imaging?

Answer 2

Tissue that will not heal may be removed to prevent infection

Question 3

Equation for speckle contrast?

Answer 3

K=sigma/<i></i>

sigma: standev of I
<i>: mean intensity</i>

Question 4

Four pros of laser speckle contrast imaging?

Answer 4

non contact
functional imaging
real-time imaging
low power - no physical effects

Question 5

Four cons of laser speckle contrast imaging?

Answer 5

Expensive

Sem-quantitative: no flow measurement

Low penetration

Sensitive to motion - can use spatial averaging instead of temporal at expense of resolution

Question 6

How is perfusion evaluated in laser doppler imaging?

Answer 6

Flow prop to [integral of wP(w) over w]

(complex derivation)