Ultrasound Flashcards
Size of adrenals where Addison’s is suspicious?
0.3cm
From dorsal to ventral, the level of VC, aorta, bile duct and portal vein?
Aorta, CVC, Portal vein, bile duct
Gallbladder volume is calculated by?
Length x width x height x 0.52
Gall bladder edema is caused by?

Toxin
cholecystitis
analphylaxis
hypoalbumen (all causes)
transfusions
hypertension
Normal gallbladder wall thickness in a dog? Cat?
Dog: 1-3mm
Cat: 1mm or less
Normal bile duct diameter in dog? Cat?
Dog - >3mm
Cat - 4mm
Unilateral adrenal mass is concerning for neoplasm when it is what size?
>2cm
What is the most reliable sign of neoplasia in the adrenal glands?
Invasion of surrounding tissues (kidney, muscular, CVC, vertebral bodies)
Differentials for unilateral nodule in the adrenal gland?
Neoplasia, hyperplasia, adenoma (function and non)
DDx for hyperechoic foci in the parenchyma of the kidney?
Infarct
Neoplasia
Hemorrhage
Granuloma
Ddx for medullary rim sign?
Normal variant
FIP
Neoplasia
Nephrocalcinosis
Ethylene glycol
Hypercalcemia nephropathy
Lepto
PSS
Acute tubular necrosis
Where do splenic infarcts usually occur?

Tail of the spleen
Portal hypertension is concerning when portal vein velocity is what?
<10cm/s
Types of Hepatocellular carcinoma
Massive
Diffuse
Nodular
Focal, circumferential thickening of gastric wall with loss of layering ddx?
Ulcer
Inflammatory
Neoplasia
Infectious
Most gastric tumors affect what area of the stomach?
Distal 2/3
Gastric tumors?
Adenocarcinomas
leimyosarcoma
Lymphoma
Polyps
Stromal tumor
Mast cell
Fibrosarcoma
Corrugated small intestines Ddx
Periontitis
Infarct
Pancreatitis
Enteritis
PLE, Lymphangiectasia
Linear body
Entrapment
Psoas major originates from?
Inserts
origin L3 (why L3/L4 hard to see on rads)
insertion: Lesser trochanter
Lesser trochanter is on what side of the femur?
Medial
Normal contraction rate of a dog is?
4-5 contractions/min
Intramural uterine mucus is seen as what echogenicity?
Hyperechoic - line
Scant amount of hypoechoic/anechoic fluid in uterus is normal when?
Proestrus, estrus and after mating
When can heartbeat be seen on US for pregnancies?
24 days
What has been used to predict age of fetus?
Chorionic vesicle diameter
Inner chorionic cavity
Crown rump length
head diameter (biparietal diameter)
Body diameter measurements
From conception when does the first mineralized structures occur in dogs and cats?
Cats: 38 days
Dogs: 43 days
First bones: Spine, skull and ribs
Brucella can cause enlarged?
Prostate
Medullary rim sign can be caused by?
Nothing
FIP
Tubular necrosis
Vasculitis
Ethelyn Glycol
Endocrinopathies can cause the pancreas to look like what?
Hypoechoic and big
What is the look of adrenal glands with trilostane?
Hypoechoic and large
DDx for swiss cheese?
EMH
Rickettsial disease
Histoplasmosis
Neoplasia (lymphoma, histiocytic sarcoma)
Thickened spleen for cat? Measurement?
~1cm
Heterobilharzia looks like what?
Granulomatosis disease in the pancreas, liver and intestines.
What signs should you look for in PSS?
Abnormal vessel
Ammonium urate stones
Big kidneys
Small liver
Cryptorchidism (50% in male does with PSS)
Portal/Aorta ratio
Azygous vein
Different size of portal vein and cava
Male dogs with PSS have cryptorchidism in what percentage of cases?
50%
Bile acids in PSS will be how many times higher than normal?
10-20x
Normal post is 10-25 so 100-500 is suspicious.
Portal vein hypoplasia is mostly confined to the intrahepatic vascultature. T/F
True
Portal hypertension can occur with?
Cirrhosis
Non-cirrotic liver disease
Clots
Tumors
portal vein hypoplasia
NOT microvascular dysplasia
Size of suprascapular insertion is normal for a dog?
Small size dog (border collie) (0.4-0.5 cm2)
Medium size dog (labrador type) (<0.6cm2)
Giant size dog (0.7 - 0.8cm2)
How to look for turbulence in the caudal vena cava when on a shunt hunt?
- Turn on doppler
- Crank the range to 25cm/s so you limit aliasing
- Start looking for turbulence
Portal vein to Aorta ratio likely represents PSS when it is?
~1/2
Should be 1:1 in normal dog
Things to look for in a shunt hunt?
- Abdnormal vessel
- Look at aorta for an extra vessel - AZYGOUS
- Cava turbulence
- Cava size
- Liver size
- Kidney size
- Bladder stones
- Portal vein size —–Portal vein:Aorta ratio
- Lastly follow splenic vein and look.
Acquired shunts live?
Caudal to the kidneys - majority
The liver of a cat is what echogenicity to the faliform fat?
Isoechoic
Cat adrenals are located where compared to the dog?
Cranial - right next the entrance of the aorta to the liver
What is this in a cat?
Fibrosis caused by chronic inflammation
THE SONOGRAPHIC APPEARANCE OF INTESTINAL MUCOSAL FIBROSIS IN CATS
DOMINIQUE G. PENNINCK
CYNTHIA R. L. WEBSTER
JOHN H. KEATING
Thrombus (spleen, cava, PV) what should you test for?
Cushing’s
IMHA
PLN
PLE
Tick bourne diseases
Inflammatory disease (ITP, Panc)
Neoplastic disease
What is this in the spleen?
Hemosiderosis
Think - Cushings, diabetes,
What diseases or medication administration that can cause increased risk of gallbladder mucocele?
Dyslipidemia
Cushings
Hypothyroid
Steroids leading to GB dysmotility and stasis