hepatobiliary imaging in dogs and cats Flashcards
1
Q
what is the dual blood supply to the liver
A
- hepatic artery (20%)
- portal vein (80%)
2
Q
venous drainage is via the
A
caudal vena cava
3
Q
In cats the common opening of CBD and pancreatic duct is at the:
A
major duodenal papilla in the hepatopancreatic ampulla
4
Q
what percent of cats don’t have a minor duodenal papilla
A
80%
5
Q
cranial abdomen
A
caudal to and conforms to the diaphragm
6
Q
caudoventral margin
A
- right lateral view: right medial lobe
- left lateral view: left lateral lobe
7
Q
what is a normal liver size
A
should be cranial to the costal arch
8
Q
gallbladder - xray
A
- right craniovental abdomen
- usually not seen
9
Q
gallbladder - xray in cats
A
- when distended, may produce a buldge along the ventral hepatic silhouette
- differential diagnosis: hepatic nodule or mass
10
Q
what can you assess with radiographs of theliver
A
- size
- shape
- margination
- radiopacity
- location
11
Q
what information does the ultrasound of theliver give
A
- size - sibjective assessment
- shape
- echogenicity
- structure
- vasculature
- biliary tree
- lymph nodes
12
Q
normal liver echogenicity
A
- < than spleen
- < than falciform fat
- > /= renal cortex
- structure: coarser than spleen
13
Q
ultrasound: biliary tree
dogs
A
- only GB visible in dogs; rounded or pear-shaped, anechoic content
- echogenic sludge is incidental
14
Q
ultrasound: biliary tree
cats
A
- cystic duct and common bile duct can be seen in normal patients
- CBD should be less than 4 mm
15
Q
what are the advantages of ultrasound of the liver
A
- very sensitive
- differentiate between parenchymal, biliary or vascular disorders
- diffuse vs. focal parenchymal liver disease
- changes in other abdominal organs
