Diagnostics - Imaging and testing

Question 1

What is the correct order of radiographic density of the following tissues, from least to most radiographically dense?

Urine-filled bladder
Humerus
Trans-articular pin
Inflated lung
Abdominal fat

Answer 1

Inflated lung
abdominal fat
urine-filled bladder
humerus
trans-articular pin

Question 2

You examine a 4-yr old standard mare in the fall with a 5 day history of depression, left head tilt, facial paralysis and worsening gait. The horse is ataxic and knuckles on both forelegs, worse on right. There is muscle atrophy of left shoulder and right hindquarters and strips of localized spontaneous sweating over left trunk. Which diagnostic test would best support the presumptive diagnosis.

A - Serum IgM capture ELISA for West Nile Virus
B - Plasma antibody test for St. Louis encephalitis
C - MRI to rule out nigropallidal encephalomalacia
D - Serum antibody titer for Eastern Equine Encephalomyelitis
E - Western Blot test of CSF for Sarcocystis neurona

Answer 2

E - Western blot test of CSF for Sarcocystis neurona

Question 3

How long after a booster rabies vaccination is a dog, cat, or ferret considered to be currently vaccinated and protected against rabies.
A -Immediately
B- After 48 hours
C- After 7 days
D- After 14 days
E- After 24 hours

Answer 3

A - Immediately

Question 4

A 6-year old quarterhorse gelding is presented in September in North America with a three-day history of depression, poor appetite, fever and worsening gait. The owner says the horse seems weak on his hind legs, stumbles and sometimes presses his head against the wall of his stall. The horse is ataxic and hypermetric in all four legs. Serum antibody titers to EEE, WEE, and VEE are low. A Western Blot test of CSF for antibodies to Sarcocystis neurona is negative. Which of the following diagnostic tests should be performed next?

A - MRI to rule out nigropallidal encephalomalacia
B - Serum AGID for equine infectious anemia
C - CSF tap and test for Japanese encephalitis
D - Plasma antibody test for St. Louis encephalitis
E - Serum IgM capture ELISA for West Nile Virus

Answer 4

E - Serum IgM capture ELISA for West Nile Virus