Acute Abdomen Radiology Flashcards Preview

CLASP Applied Anatomy & Radiology (Y3) > Acute Abdomen Radiology > Flashcards

Flashcards in Acute Abdomen Radiology Deck (66)
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1

What are the primary imaging tools in acute abdomen?

X-ray CT USS

2

What is the secondary imaging tool in acute abdomen?

MRI

3

What are the drawbacks of using CT?

 Increases cancer risk  Contrast – renal impairment

4

USS allows for clear visualisation of...

solid organs, free fluid, aorta, pelvis

5

MRI is good for...

soft tissue imaging, especially in pelvis

6

MRI is used as a second-line test for...

hepato-biliary (MRCP), small bowel, pelvis

7

Which imaging should be used in acute appendicitis?

USS then CT if inconclusive

8

Diverticulitis may be misdiagnosed as...

appendicitis, colorectal Ca

9

What do you need to be able to do when doing imaging for suspected diverticulitis?

o Make diagnosis o Look for complications – abscess, obstruction, perforation, fistulae

10

Give complications of diverticulitis.

abscess, obstruction, perforation, fistulae

11

Which imaging modalities may be used in diverticulitis?

X-ray CT

12

How is acute cholecystitis diagnosed?

RUQ pain + fever/raised CRP/WCC + confirmatory imaging

13

Which imaging modalities are used in Acute cholecystitis?

USS MRCP

14

What would usually be seen on USS of acute cholecystitis?

 Gallstones  GB wall thickening

15

What is emphysematous cholecystitis?

Air in gallbladder wall

16

Who gets emphysematous cholecystitis?

Diabetics

17

Give common causes of small bowel obstruction.

adhesions, cancer, herniae & gallstone ileus

18

What are the main symptoms of small bowel obstruction?

vomiting, pain & distension

19

What are the main signs of small bowel obstruction?

increased bowel sound, tenderness, palpable loops

20

Which imaging modalities can be used for small bowel obstruction?

X-ray CT

21

What is the drawback of x-ray in small bowel obstruction?

may not detect fluid-filled loops

22

What is gallstone ileus?

Obstruction of the small intestine due to gallstone impaction, usually at the iliocaecal valve

23

What are the main causes of large bowel obstruction?

colorectal cancer, volvulus, diverticulitis

24

How can you identify large bowel on x-ray?

Haustra go all the way across

25

Which imaging modality is best for large bowel obstruction?

CT - can identify cause too

26

What should you look for in bowel obstruction to assess risk of perforation?

dilation of the caecum suggests high risk of perforation.

27

What are the common causes of perforation in the GI tract?

Perforated ulcer Diverticulum

28

Which imaging modalities are useful in perforation?

X-ray CT

29

What % of CO does the GI tract usually receive?

20%

30

What % of CO does the GI tract receive in ischaemia?

< 10%