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Flashcards in Imaging Deck (56)
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1

Types of GI/Abdominal Imaging

X-rays
CT
Ultrasound
Direct visualization
ERCP
HIDA Scan

2

What can Abdominal X-rays show?

Gas in abnormal places or amounts
Stones
Metallic FB

3

Indications for an Abdominal X-Ray

Suspected bowel obstruction/perforation
Suspected intussusception
FB
Suspected abdominal mass
Blunt abdominal trauma (seatbelt from MVA)

4

When are Abdominal X-rays not Indicated

Vague central abdominal pain
Gastroenteritis
Haematemesis

5

Gas within the Small Bowel on Abdominal Xray

Intraluminal gas minimal
Centrally located
Tight loops of sm. diameter
Valvulae conniventes

6

Gas within the Large Bowel on Abdominal X-ray

Mixture of gas & feces
Loops larger in diameter
Haustra

7

Abnormal Findings on an Abdominal X-ray

Dilated loops
Air-fluid levels on erect film
Intramural gas
Intraperitoneal gas
Extraperitoneal gas

8

Liver on Abdominal X-ray

Large are in RUQ

9

Spleen on Abdominal X-ray

Soft tissue LUQ
Size of a fist
Can be seen, obscured, or not at all

10

Kidneys on Abdominal X-ray

Bean shaped
Left higher than right
About 3 vertebrae in size

11

Psoas Muscles on Abdominal X-ray

Straight lines extending inferolaterally from lumbar spine to lesser trochanter of femur

12

Bladder on Abdominal X-ray

Only if full
Soft tissue density in pelvis

13

Define Ileus

Hypo mobility of the GI system in the absence of mechanical bowel obstruction

14

What is another name for an upper GI series?

Barium swallow

15

What does an Upper GI Series use for diagnostics?

Plain film x-ray
Fluoroscopy

16

What are the two types of upper GI series?

Standard barium upper GI series
Double-contrast upper GI series

17

What does an upper GI series look at?

Esophagus
Stomach
Duodenum

18

Indications for an Upper GI Series

Dysphagia
GERD
Assessment of hiatal hernia
Strictures
Tumors
Ulcers
Fistulas
varices
Diverticulum

19

Contraindications for an Upper GI Series

Intestinal obstruction
Esophageal perforation or rupture is suspected
Pregnant women
Individuals with poor swallowing reflex

20

Risk of an Upper GI Series

Constipation

21

Indications for a Small Bowel Follow Through

Crohn's
Tumors
Unexplained abdominal pain
Malabsorption symptoms
Small bowel fistulas

22

What is another name for a lower GI study

Barium Enema

23

What does a lower GI study evaluate?

The colon

24

Indications for a Lower GI Study

Colon cancer
Diagnose/monitor UC or Crohn's disease
Diverticultitis
Fistulas
Megacolon

25

Risk of a Lower GI Study

Pregnant women
Colon perforation

26

What is a sensitive method to diagnose abdominal diseases?

Abdominal CT

27

What are Abdominal CT Frequently Used for?

Stage
Follow CA

28

Indications for an Abdominal CT

Patients with jaundice
Pancreatic disease
Hepatic matastases

29

Contraindications for an Abdominal CT

Expensive
High doses of radiation

30

Hepatobiliary Scintigraphy (HIDA Scan)

Used in Diagnosis of problems with the liver, gallbladder, or bile ducts
Nuclear-medicine scan