GI Imaging Flashcards Preview

Gastroenterology > GI Imaging > Flashcards

Flashcards in GI Imaging Deck (55)
Loading flashcards...
1

What are the advanatages of abdominal xrays?

5

1. Plain abdominal x-rays are readily available

2. Often used for urgent investigation

3. Does show gas in abnormal places or abnormal amounts

4. Can show stones and metallic foreign bodies well

---Kidney and gall bladder stones

5. Solid organs can be seen but not well

 

2

What kind of xrays may you need for abdominal views?

2

What do you get better imaging with?

2

May need upright and lateral decubitus films as well as flat plates

 

Better imaging with CT or ultrasound

3

Abdominal xray

Indications 5

Not indicated for 3

Indications 

1. Suspected bowel obstruction/Perforation

2. Suspected intussusception

3. Foreign bodies

4. Suspected abdominal mass

5. Blunt abdominal trauma

Not indicated

1. Vague central abdominal pain

2. Gastroenteritis

3. Haematemesis

4

Interpretation

Determine ownership, adequacy, and technical quality of the film

THEN?

3

1. Gases

2. Abdominal findings

3. Solid organs (liver, kidneys, spleen, psoas muscles, bladder)

 

5

What are we looking for with gases in general?

Normal and abnormal gas distribution

6

What are we looking for with gas in the small bowel?

(normal findings 4)

1. Intraluminal gas usually minimal

2. Centrally located

3. Numerous tight loops of small diameter (2.5-3.5cm)

4. Valvulae conniventes (Stack of coins)

7

What are we looking for with gases in the large bowel?

(normal findings 3)

1. Mixture of gas and feces

2. Loops are larger in diameter (3-5cm)

3. Haustra

8

What are abnormal findings in gas patterns?

5

1. Dilated loops

2. Air-fluid levels on erect film

3. Intramural gas

4. Intraperitoneal gas

5. Extraperitoneal gas

9

1. What is the large area in the RUQ of the xray?

2. Its bulk prevents what in this area?

1. liver

2. any bowel occupying this area

10

What is the soft tissue in the LUQ, size of a fist?

spleen

Can be seen, obscured, or not at all

11

Kidney shape?

Which is higher than the other?

What size?

Bean shaped

Left higher than right

About 3 vertebrae in size

12

Explain where you will find the psoas muscles on the xray?

Forms straight lines extending inferolaterally from lumbar spine to lesser trochanter of femur

13

Bladder appears how on the xray?

If full appears as soft tissue density in pelvis

14

Normal Gas Pattern

See picture

15

What is these xrays showing?

What symtpoms does he have from this pathology? 3

SMALL BOWEL OBSTRUCTION

 

TWO PATIENTS WITH

1. ABDOMINAL DISTENSION,  

2. CRAMPY MID-ABDOMINAL PAIN 

3. VOMITING

16

What are these two xrays showing?

What symptoms come with this pathology? 3

LARGE BOWEL OBSTRUCTION

 

TWO PATIENTS WITH

1. ABDOMINAL DISTENSION.

2. LOWER ABDOMINAL PAIN, AND

3. CONSTIPATION

17

What are these two xrays showing?

Often occurs when?

Ileus

After surgery

18

What are these xrays showing?

Constipation (full of stuff/stool)

19

What are these xrays showing

1?

2?

 

1. Calcified gallbladder

2. Kidney stones

20

Abdominal organs

21

Find the Foreign Body!

22

1. Upper GI series aka?

2. Uses what tools?

3. What are the two types?

4. What does it look at? 3

 

1. Also called a barium swallow

2. Uses plain film x-ray and fluoroscopy

3. 2 types

-Standard barium upper GI series

-Double-contrast upper GI series

4. Looks at the

-esophagus,

-stomach, and

-duodenum

23

Indications for an Upper GI series?

4

Indications

1. Dysphagia

2. GERD

3. Assessment of hiatal hernia

4. Strictures

24

Upper GI series contraindications?

4

Risk? 1

 

Contraindications

1. Intestinal obstruction

2. Esophageal perforation or rupture is suspected

3. Pregnant women

4. Individuals with poor swallowing reflex

Risk

1. Constipation

25

Small Bowel Follow Through

Indications

3

1. Chrohn’s

2. Tumors

3. Unexplained abdominal pain

26

1. Lower GI studies aka?

2. What does it evaluate?

3. What kinds? 2

4. Indications? 2

5. Risks? 2

1. Also called Barium Enema

2. Evaluates the colon

3.

-Barium enema

-Air-contrast (double-contrast) enema

4. Indications

-Colon cancer (apple core lesion)

-Diagnose/monitor UC or Crohn’s disease

5. Risk

-Pregnant women

-Colon perforation

27

Lower GI series

28

What is a sensitive method to diagnosis abdominal disease?

CT

29

CT: Frequently used to do what?

(In the picture what does the 3rd pic show?)

stage and follow cancer

(Abdominal aneurysm)

30

Indications for abdominal CT? 3

1. Patients with jaundice

2. Pancreatic disease

3. Hepatic metastases