Flashcards in Radiology Deck (25):
What does gas look like on an ultrasound?
Pros/cons of a CT scan
-Creates a 3D image of an organ
-high contrast imaging
- for cancer (tumors), injuries, or abnormalities inside the body
-higher risks for cancer, especially lung and colon cancer, and leukemia
-Uses radiation, which increases our chances of malignancy
Pros/uses vs cons of an ultrasound
-Your doctor may order an ultrasound if you’re having pain, swelling, or other symptoms that require an internal view of your organs.
-obstruction of other organs, gas, stools etc
Via CT the colon looks?
Via CT the SI looks?
Rectum (upper 1/3)
Small intestines (jejunum, ileum, caecum)
P: pancreas (except tail)
C: colon (ascending and descending)
Cirrhosis is a complication of liver disease which involves loss of liver cells and irreversible scarring of the live
What can go wrong in the liver and gallbladder?
Liver: (abnormal function)
cirrhosis (nasty, white, shrunken)
Gall bladder (pain)
-gall stones/ cholecystitis
Symptoms of issues with the gall bladder/ liver
-Pain (more due to GB, although liver can have pain)
a tangle of blood vessels in the liver
How do ultrasounds pick us masses?
Sound waves. Blood flow reflects differently to fat/liver tissue and tumors can be identified.
Specific symptoms of gallstones, and how do you identify these?
- RUQ pain
- nausea, fever
- intermittent (especially after eating fatty food).
-bile in ultrasound = black
- so only gallstones are reflected and visible.
- thickened GB wall due to irritation/ inflammation
Gall stones are barely visible on CT!!
Potential issues with the spleen. How is this identified?
- trauma (ruptured sleen)
- cancer (spleen lymphoma)
- portal hypertension
- congenital eg) cysts
Viewed via CT scan:
- blood around the liver
- decreased haemoglobin
What are the two ways for free air to get into the gut? How is this viewed?
2) gut perforation
Straight to CT. Previously they would've have to had been on their side to see free air.
Issues of the stomach or Small bowel have symptoms of? Ways of investigating are?
- abdo xray
- CT (if not sure about SI) (1st scan in eldery)
- barium study
cysts on kidneys
What does the small bowel look like? where is it on a scan
Looks feathery, whitesits in the middle of a picture
Symptoms of a small intestine obstruction
distention, vomiting, nausea, pain
Haustra coli and rugae as identifying things?
Haustra coli don't go all the way across. (Colon)
Rugae do (SI)
Symptoms of a colon/LI issue. FIrst thing to do is?
-altered bowel habits
- PR blood
1st CT or CT colonoscopy
shows extremely distended bowels
What can go wrong in the pancreas? what 'effect' can this cause?
Cancer-primary (islet cell tumors or metastisis)
'nutcracker effect' (duodenum compressed by SMA and aorta)
Two main reasons for pancreatic issues?
2) gallstones in common bile duct