Imaging

Question 1

How do you obtain PVR using a translabial ultrasound?

what is the error rate compared to true volume by straight cath

Answer 1

(LxW cm) x 5.6

20%

Question 2

On endoanal ultrasound, which muscle is dark and which muscle is light?

Answer 2

internal anal sphincter is dark
external anal sphincter is light

Question 3

you remove mesh for exposure. She is otherwise continent

what is is risk of SUI after slign removal?

Answer 3

59%

Question 4

Your patient has hydronephrosis on CT.

How would you differentiate between obstructive vs non-obstructive hydronephrosis?

Answer 4

Mag 3 renal scan. mag 3 is excreted into bladder

Question 5

What is a DMSA renal scan?

Answer 5

static renal scan that shows whether or not a kidney lesion has normal functioning nephrons or not.

also shows differential function between two kidneys

DMSA is minimally excreted into the kidneys