Radiological Anatomy Of The Abdomen Wk8

Question 1

Pros of X-ray (AXR)?

Answer 1

• quick
• low radiation dose
• no prep needed

Question 2

Cons of X-ray (AXR)?

Answer 2

• limited interpretation

- CT better?

Question 3

Positives of CT

Answer 3

• All around patients - get a spherical image that computer puts together to be understood
• gold standard of acute abdominal imaging
• quick, readily available
• radiation dose higher, can be hindered by artefact

Question 4

Ultrasound physics explanation

Answer 4

• Uses high frequency sound waves to obtain images from inside the body
• Unlike CT and Plain Radiography no ionizing radiation
• Frequency higher than the human auditory limit of
20KHz
• US transducer converts electric signals into mechanical vibrations and vibrations back into electrical signals which form the picture depending on density of tissues
• If material is solid, particles are denser and so ultrasounds are reflected back, so show up as white
• If material is fluid,it transmits the sound waves so fluid comes across black (full bladder)
• Air is even stronger reflector and so you cant see anything behind it (ultrasound gel)

Question 5

What is cholecytitis?

Answer 5

Inflammation of gall bladder

Question 6

Why does pancreatic cancer tend to lead to death?

Answer 6

• Pancreas links to everything
• Normally caught late
• Enzymes can leak out of bowel e.g. into abdomen - digestive enzymes will break areas down

Question 7

What does FAST scan stand for?

Answer 7

Focussed
Assessment
Sonography
Trauma