Lecture 11: GI investigation

Question 1

What imaging techniques is used to image the Gi tract

Answer 1

• Endoscopy
• Plain X-ray

Question 2

What imaging techniques is used to image the accessory organs of the GI tract

Answer 2

CT

Ultrasound

MRI

Question 3

What are the 3 types of endoscopy used for GI

Answer 3

Upper Endoscope - Upper GI

ERCP - Pancreatic and bile ducts

Colonoscopy- Lower GI

Question 4

Why must a laxative be given before a colonoscopy

Answer 4

To removal the faecal matter

Question 5

Which drug is commonly used as a sedative for the endoscopy

Answer 5

Midazolam

Question 6

In an X-ray, the dense white parts are high in which molecule

Answer 6

Calcium hence why bones are very white

Question 7

Barium swallow is part of which family of imaging

Answer 7

Fluoroscopy: X-ray with a contrast e.g. barium

Question 8

Which imaging technique is the first line investigation in abdominal pain

Answer 8

Ultrasound

Question 9

Which imaging technique is the most sensitive for the gallbladder

Answer 9

Ultrasound

Question 10

What is CT not good at

Answer 10

Not so good tissue differentiation

Question 11

When can MRI’s not be used

Answer 11

In patients with pacemakers